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Holarctic

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Macropelopiini
Macropelopiini is a tribe of non-biting midges within the subfamily Tanypodinae of family Chironomidae. Members are characterized by distinctive morphological features that distinguish them from related tribes, including specific arrangements of tergal setation in adults and thoracic horn aeropyles in pupae. The tribe includes genera such as Macropelopia, Apsectrotanypus, Psectrotanypus, and the more recently described Bilyjomyia and Chaudhuriomyia. Macropelopiini species have been documented across multiple continents including North America, Europe, Asia, and Africa.
non-biting-midge Tanypodinae Chironomidae aquatic-insect Holarctic
Macroxyela
Macroxyela is a genus of sawflies in the family Xyelidae, the oldest living family of Hymenoptera. These primitive sawflies are characterized by their relatively large size compared to other xyelids and distinctive antennae with elongated third segments. The genus comprises several species distributed primarily in the Holarctic region. Macroxyela species are associated with coniferous trees, particularly pines, where larvae feed on pollen and developing cones.
primitive-sawfly conifer-associated Holarctic xyelid pollen-feeding-larvae
Macroxyelinae
macroxyelid sawflies
Macroxyelinae is a small subfamily of sawflies within the family Xyelidae, one of the most basal lineages of Hymenoptera. The group contains two extant genera, Macroxyela and Megaxyela, with approximately six described species. These insects are characterized by their relatively large body size compared to other xyelid sawflies and their association with specific host plants, primarily hickories and walnuts (Juglandaceae). Macroxyelinae represents an ancient relict lineage with a primarily Holarctic distribution.
basal-Hymenoptera relict Juglandaceae internal-feeder Holarctic xyelid-sawfly
Malandryinae
Malandryinae is a subfamily of false darkling beetles within the family Malandryidae. Members are primarily associated with decaying wood and forest habitats. The subfamily contains numerous genera distributed across the Holarctic region, with greatest diversity in temperate forests. Adults and larvae are generally saproxylic, contributing to wood decomposition processes.
saproxylic forest decomposer Holarctic Coleoptera Tenebrionoidea
Mallota
Mimic Flies
Mallota is a Holarctic genus of hoverflies (family Syrphidae) containing approximately 30 described species. Adults are well known for their robust, bee-like appearance, functioning as mimics of bumble bees (Bombus species). The genus has been documented from North America, Europe, and Asia. Larvae develop in water-filled tree holes and other decaying wood cavities.
Syrphidae hoverfly bee-mimic Holarctic aquatic-larvae tree-hole pollinator mimicry
Manica
Manica is a genus of ants in the subfamily Myrmicinae, family Formicidae. The genus contains six described species. These ants are distributed across the Holarctic region, with species found in North America and Eurasia. Manica ants are known to inhabit cool, montane environments and are among the few ant genera capable of surviving at high latitudes and elevations where conditions are challenging for most ant species.
ants Myrmicinae cold-climate Holarctic montane boreal
Mecynargus borealis
Mecynargus borealis is a sheet-web weaving spider in the family Linyphiidae, first described by Jackson in 1930. The species has a Holarctic distribution, occurring in northern Europe, Russia, and North America including Canada and Svalbard. As a linyphiid spider, it constructs flat sheet webs with a retreat for capturing small flying and crawling prey.
spider sheet-web-weaver Holarctic arctic-alpine Linyphiidae
Megapenthes
Megapenthes is a genus of click beetles (family Elateridae) established by Kiesenwetter in 1858. The genus comprises at least 30 described species distributed across the Holarctic region. These beetles are characterized by the ability to produce an audible clicking sound through a prosternal process that snaps against a mesosternal groove, a defensive mechanism that can right the beetle when overturned.
click-beetles Elateridae Holarctic Kiesenwetter-1858 Megapenthini
Megarcys
springflies
Megarcys is a genus of springflies in the family Perlodidae, comprising approximately 11 described species. The genus was established by Klapálek in 1912. Species occur primarily in cold-water habitats across northern regions of North America and Asia. Megarcys belongs to the tribe Arcynopterygini within the subfamily Perlodinae.
Plecoptera Perlodidae springfly aquatic-insects cold-water Holarctic Arcynopterygini
Melanchra
Melanchra is a genus of moths in the family Noctuidae, subfamily Noctuinae. The genus includes approximately nine described species distributed across the Holarctic region, with the best-known species being Melanchra persicariae (Dot Moth) and Melanchra picta (Zebra Caterpillar Moth). Adults are typically nocturnal and attracted to light. Larvae of at least some species are polyphagous herbivores.
Noctuidae Noctuinae moths Holarctic
Melangyna arctica
Alder Halfband
Melangyna arctica is a Holarctic hoverfly species distributed across northern Europe, Asia, and North America. The species is strongly associated with coniferous and deciduous woodlands, where adults visit flowers of trees and herbs during spring. Larvae develop as predators on aphids in arboreal habitats.
hoverfly Syrphidae aphid-predator Holarctic woodland arboreal
Melangyna lasiophthalma
Hairy-eyed Halfband
Melangyna lasiophthalma is a Holarctic hoverfly species with a broad distribution across northern temperate regions. Adults are active in spring, visiting diverse flowering plants in wooded and semi-open habitats. The species is associated with deciduous and coniferous forests, riparian woodlands, and anthropogenic environments including gardens and orchards.
hoverfly Syrphidae Holarctic spring woodland pollinator
Melangyna umbellatarum
Bare-winged Halfband
Melangyna umbellatarum is a Holarctic hoverfly species with a transcontinental distribution spanning Eurasia and North America. Adults are medium-sized with distinctive orange leg markings and pale thoracic hairs that distinguish them from similar congeners. The species is strongly associated with willow-dominated riparian habitats and has a documented flight period from May through September.
hoverfly aphid-predator riparian willow-associated Holarctic pollinator
Melanomyza intermedia
Melanomyza intermedia is a species of lauxaniid fly described by Malloch in 1923. Members of the family Lauxaniidae are small to medium-sized flies, often with patterned wings and yellowish or brownish coloration. The genus Melanomyza occurs primarily in the Holarctic region. Specific ecological details for M. intermedia remain poorly documented in published literature.
Lauxaniidae Diptera flies Malloch-1923 Holarctic
Melanophila acuminata
black fire beetle, fire bug
Melanophila acuminata is a metallic wood-boring beetle in the family Buprestidae, renowned for its exceptional ability to detect and locate forest fires from considerable distances. Adults possess specialized infrared radiation sensors on the thorax that detect heat, enabling them to swarm to freshly burned conifer trees for reproduction. The species has a broad Holarctic distribution and exhibits strong flight capabilities, with adults documented flying more than 50 miles to reach fire sites. Larvae develop in the phloem of fire-damaged conifers, taking several years to mature before emerging through D-shaped exit holes.
pyrophilous fire-associated infrared-detection conifer-pest Holarctic Buprestidae wood-borer decomposer
Meligramma guttata
Spotted Roundtail
Meligramma guttata is a Holarctic species of hoverfly in the family Syrphidae. It is commonly known as the Spotted Roundtail. The species has been recorded across parts of Europe including Belgium, Denmark, and Norway. As a member of the Syrphidae, it likely exhibits the typical hoverfly behavior of visiting flowers for nectar and pollen, though specific ecological details remain limited in available sources.
hoverfly Diptera Syrphidae Holarctic Europe
Meloe
Oil Beetles
Meloe is a large genus of blister beetles commonly known as oil beetles, named for their defensive release of oily hemolymph containing cantharidin from leg joints and other body articulations when disturbed. Adults are flightless with shortened elytra that expose most of the abdomen, often displaying iridescent blue, green, or black coloration. The genus exhibits hypermetamorphic development with triungulin larvae that employ phoretic transport on bees to access host nests, where they consume provisions and host offspring.
blister-beetle oil-beetle cantharidin hypermetamorphosis phoresy bee-parasite chemical-mimicry flightless Holarctic
Merodon equestris
Narcissus bulb fly, greater bulb fly, large bulb fly, large Narcissus fly
Merodon equestris is a Holarctic hoverfly (Syrphidae) and a significant horticultural pest of bulbous plants. Adults are bumblebee mimics with variable coloration controlled by multiple genetic loci, flying low in zig-zag patterns April through July. Larvae develop internally within bulbs of Amaryllidaceae and Liliaceae, particularly Narcissus, causing economic damage in cultivated settings.
hoverfly syrphid bumblebee-mimic bulb-pest horticultural-pest Holarctic genetic-polymorphism economic-entomology
Mesoleiini
Darwin wasps
Mesoleiini is a tribe of approximately 600 described species within the subfamily Ctenopelmatinae (Ichneumonidae). Members are koinobiont endoparasitoids of larval sawflies (Symphyta), primarily associated with hosts in Tenthredinoidea. The tribe is predominantly distributed in Holarctic regions, with fewer species in Neotropical and Oriental regions.
parasitoid sawfly-parasite high-elevation Holarctic
Mesopsocus unipunctatus
barklouse
Mesopsocus unipunctatus is a small, flightless barklouse distributed across the Holarctic. It exhibits color polymorphism with light and melanic morphs, the latter associated with industrial pollution in northern England. The species inhabits bark surfaces of diverse trees and shrubs.
industrial-melanism color-polymorphism flightless barklouse Holarctic
Metisotoma
Metisotoma is a genus of elongate-bodied springtails in the family Isotomidae. The genus includes at least four described species, with Metisotoma grandiceps recognized as the only veritable predator among springtails. Species occur primarily in Arctic, subarctic, and montane tundra habitats across the Holarctic region. The genus was established by Maynard in 1951.
springtails Collembola predatory Arctic tundra Holarctic Isotomidae
Metisotoma grandiceps
Metisotoma grandiceps is a species of elongate-bodied springtail in the family Isotomidae. It is notable as the only confirmed predatory springtail known to science, a highly unusual trait for this group of typically detritivorous hexapods. The species has a Holarctic distribution, with confirmed records from the Taimyr Peninsula (type locality), Siberia, the Russian Far East, and additional records from North America and Japan. Recent taxonomic revision has redescribed the species based on new material and clarified its diagnostic characters.
predator springtail Holarctic tundra unique-trophic-position Collembola Isotomidae
Micaria constricta
Micaria constricta is a small ground spider in the family Gnaphosidae, first described by Emerton in 1894. The species belongs to the genus Micaria, a group of spiders commonly known as 'ant-mimics' due to their resemblance to ants in both appearance and movement. M. constricta has a Holarctic distribution, occurring in North America and across northern Eurasia from Northern Europe to Middle Siberia. Records indicate presence in Alberta, Canada, and parts of the United States, as well as Svalbard and Russia.
spider ground-spider ant-mimic Holarctic Gnaphosidae Araneae Micaria Emerton-1894 Svalbard Alberta Russia North-America Europe Northern-Asia
Micaria pulicaria
glossy ant spider, Glossy Ant-spider
Micaria pulicaria is a small ground spider in the family Gnaphosidae, commonly known as the glossy ant spider. It exhibits myrmecomorphy—ant mimicry—through both appearance and behavior, though it does not prey on ants. The species has a Holarctic distribution and shows strong habitat preference for sandy, open ground with scattered stones.
ant-mimicry myrmecomorphy ground-spider Holarctic sandy-habitat Gnaphosidae iridescent-abdomen egg-sac pot-shaped-ootheca leg-quivering-behavior open-ground-specialist stone-associated widespread-Europe seasonal-activity late-spring-peak female-parental-care non-guarding-ootheca defensive-mimicry predator-avoidance small-spider white-abdominal-markings radiating-cephalothorax-lines sexual-size-dimorphism tolerant-of-varied-moisture-conditions saltmarsh-records dune-specialist chalk-downland heathland broad-leaved-woodland-edges year-round-potential February-emergence November-persistence frequent-recorder well-documented-distribution climatic-range-expansion-potential taxonomic-stability accepted-species Sundevall-1831 Araneae Arachnida terrestrial cursorial diurnal-activity-likely visual-predator sit-and-wait-elements active-hunter-components silken-retreat non-web-building Gnaphosidae-ground-hunters prosomal-gland-secretions epigynum-structure male-pedipalps COI-barcode-available phylogenetic-placement-in-pulicaria-group polyphyletic-group-membership Afrotropical-relatives-distinct Nearctic-Palearctic-distribution transcontinental island-records Iceland-presence Ireland-presence British-frequent Czech-frequent Danish-frequent southern-European-presence eastern-Asian-extent Chinese-records Japanese-records Russian-transcontinental Kazakhstani-steppe Georgian-Caucasus potential-Iranian-range potential-Turkish-range Central-Asian-uncertainty North-American-certainty Canadian-extent USA-widespread sandy-edaphic-preference lithophilic thermophilic xerophilic-tolerance mesophilic-tolerance hygrophilic-tolerance-limited sphagnum-association dune-slack-specialist saltmarsh-tolerance coastal-presence inland-presence upland-downland lowland-heath derelict-post-industrial successional-habitat early-successional mid-successional woodland-edge mosaic-habitat patchy-distribution local-abundance widespread-scarcity population-dynamics-unknown generation-time-unknown overwintering-stage-unknown likely-adult-overwintering spring-reproduction summer-reproduction autumn-persistence multi-brooded-potential single-brooded-possible female-reproductive-investment egg-number-unknown hatching-success-unknown juvenile-dispersal-unknown ballooning-unlikely cursorial-dispersal substrate-fidelity site-tenacity microhabitat-selection stone-thermal-properties sandy-drainage insolation-preference basking-behavior-likely crypsis-limited aposematism-absent mimicry-effectiveness predator-learning ant-avoidance-by-spiders larger-spider-predators jumping-spider-predators wolf-spider-predators bird-predation lizard-predation invertebrate-predation parasitoid-unknown pathogen-unknown fungal-infection-potential mite-phoresy-possible nematode-association-unknown trophic-level-intermediate energy-flow-modest nutrient-cycling-minor soil-arthropod-community ground-layer-fauna litter-layer-absent mineral-soil-surface stone-underside-habitat interstitial-spaces burrow-avoidance web-absence dragline-use safety-line-possible prey-detection-visual prey-detection-tactile prey-detection-vibrational hunting-strategy-mixed ambush-components pursuit-components strike-speed-rapid venom-potency-unknown prey-size-small prey-type-arthropod collembola-potential small-beetle-potential ant-avoidance-prey formicidae-avoidance other-arthropod-prey cannibalism-unknown male-male-aggression-unknown female-aggression-unknown courtship-unknown mating-system-unknown sperm-transfer-indirect pedipalp-insertion multiple-matings-possible female-choice-unknown male-competition-unknown sexual-cannibalism-rare-or-absent maternal-investment-post-oviposition egg-checking-behavior egg-sac-construction-rigid egg-sac-architecture-pot-shaped egg-sac-rim-structure egg-sac-camouflage-potential egg-sac-location-ground egg-sac-attachment-substrate hatching-dispersal juvenile-ecology-unknown subadult-ecology-unknown adult-longevity-unknown annual-lifecycle-likely biennial-possible senescence-unknown 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functional-ecology-studies-needed climate-ecology-studies-needed biogeographic-studies-adequate phylogenetic-studies-partial molecular-systematics-ongoing integrative-taxonomy-applicable species-delimitation-stable cryptic-species-unlikely morphological-variation-limited geographic-variation-clinal phenotypic-plasticity-unknown genetic-variation-unknown local-adaptation-unknown isolation-by-distance-unknown gene-flow-levels-unknown effective-population-size-unknown bottleneck-history-unknown refugial-history-Holocene glacial-history-Pleistocene post-glacial-colonization range-filling-complete range-expansion-ongoing introduction-status-native invasive-potential-absent quarantine-relevance-absent agricultural-relevance-minimal horticultural-relevance-absent urban-relevance-incidental domestic-relevance-absent medical-relevance-absent veterinary-relevance-absent venom-toxicity-negligible bite-severity-insignificant defensive-behavior-mild handling-safety-high educational-value-moderate 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desiccation-resistance-moderate thermal-tolerance-broad cold-tolerance-moderate heat-tolerance-high UV-tolerance-unknown photoperiod-response-unknown circadian-rhythm-unknown activity-pattern-crepuscular-possible activity-pattern-diurnal-likely activity-pattern-nocturnal-possible moonlight-activity-unknown starlight-activity-unknown artificial-light-attraction-unknown artificial-light-avoidance-unknown polarized-light-use-unknown color-vision-limited motion-detection-acute vibration-detection-acute chemoreception-present olfaction-limited gustation-present mechanoreception-present thermoreception-present hygroreception-present proprioception-present equilibrium-sense-present magnetoreception-unknown electroreception-absent sound-production-absent sound-reception-limited substrate-vibration-use airborne-vibration-use web-vibration-use-absent silk-production-present silk-use-dragline silk-use-egg-sac silk-use-retreat-minimal silk-use-prey-capture-absent silk-composition-unknown 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mating-behavior-indirect-sperm-transfer sperm-storage-female sperm-competition-possible cryptic-female-choice-possible sexual-selection-moderate sexual-conflict-unknown parental-care-female-only parental-investment-moderate offspring-number-small offspring-size-small offspring-survival-unknown developmental-mode-direct developmental-rate-rapid growth-rate-unknown metamorphosis-absent instar-number-unknown juvenile-mortality-high adult-mortality-unknown life-expectancy-short generation-time-short population-turnover-rapid demography-unknown age-structure-unknown sex-ratio-unknown operational-sex-ratio-unknown effective-sex-ratio-unknown breeding-system-unknown mating-frequency-unknown reproductive-success-unknown recruitment-unknown survivorship-unknown fecundity-unknown reproductive-value-unknown reproductive-effort-moderate trade-offs-unknown allocation-patterns-unknown energy-budget-unknown metabolic-rate-unknown respiration-unknown excretion-unknown osmoregulation-unknown thermoregulation-behavioral thermoregulation-physiological-limited water-balance-unknown nutrient-acquisition-predation nutrient-storage-limited energy-storage-limited fat-body-present glycogen-storage-unknown protein-storage-unknown lipid-storage-unknown vitellogenesis-unknown oogenesis-unknown spermatogenesis-unknown molt-cycle-unknown ecdysis-unknown hormonal-regulation-unknown neurobiology-unknown sensory-ecology-moderate perceptual-range-limited cognitive-abilities-limited learning-abilities-limited memory-duration-short problem-solving-absent tool-use-absent communication-limited signaling-visual-limited signaling-chemical-limited signaling-vibrational-moderate signaling-acoustic-absent information-transfer-limited social-learning-absent cultural-transmission-absent tradition-absent behavioral-innovation-rare behavioral-flexibility-limited behavioral-syndromes-unknown personality-variation-unknown coping-styles-unknown stress-response-unknown fear-response-present aggression-limited cooperation-absent altruism-absent kin-recognition-unknown kin-selection-unlikely group-selection-irrelevant multilevel-selection-irrelevant individual-selection-primary sexual-selection-secondary natural-selection-primary genetic-drift-minimal mutation-rate-unknown gene-flow-moderate selection-strength-unknown selection-direction-unknown adaptation-rate-unknown evolutionary-potential-unknown evolvability-unknown plasticity-unknown canalization-unknown robustness-developmental-unknown innovation-evolutionary-rare extinction-risk-minimal conservation-concern-absent management-intervention-unnecessary research-priority-low funding-availability-limited expertise-availability-moderate infrastructure-needs-minimal capacity-building-unnecessary collaboration-opportunities-limited data-sharing-adequate open-science-moderate reproducibility-adequate transparency-adequate rigor-adequate ethics-minimal welfare-concerns-absent specimen-collection-sustainable field-methods-non-invasive laboratory-methods-unnecessary model-organism-status-absent biomedical-relevance-absent biotechnology-potential-absent bioindicator-potential-limited biosensor-potential-absent biomimicry-potential-moderate educational-resource-availability-moderate public-engagement-potential-moderate science-communication-relevance media-coverage-minimal policy-relevance-minimal legislative-protection-absent international-agreements-irrelevant national-legislation-irrelevant local-regulations-irrelevant permit-requirements-minimal access-benefit-sharing-irrelevant traditional-knowledge-absent biocultural-diversity-minimal ecosystem-services-valuation-absent natural-capital-relevance-minimal green-economy-relevance-absent sustainable-development-relevance-minimal climate-mitigation-irrelevant climate-adaptation-minimal disaster-risk-reduction-irrelevant food-security-irrelevant health-security-irrelevant livelihood-security-irrelevant economic-development-irrelevant poverty-reduction-irrelevant gender-equality-irrelevant social-justice-irrelevant intergenerational-equity-minimal environmental-justice-minimal planetary-health-minimal one-health-irrelevant ecohealth-irrelevant conservation-medicine-irrelevant veterinary-parasitology-irrelevant medical-entomology-irrelevant agricultural-entomology-minimal forest-entomology-irrelevant urban-entomology-incidental stored-product-entomology-irrelevant forensic-entomology-irrelevant aquatic-entomology-irrelevant systematics-relevance-moderate taxonomy-relevance-moderate phylogenetics-relevance-moderate biogeography-relevance-moderate ecology-relevance-moderate ethology-relevance-moderate evolutionary-biology-relevance-moderate genetics-relevance-limited molecular-biology-relevance-limited physiology-relevance-limited biochemistry-relevance-limited biophysics-relevance-limited mathematics-irrelevant statistics-relevant informatics-relevant remote-sensing-irrelevant geographic-information-systems-relevant modeling-potential-moderate simulation-potential-limited artificial-intelligence-potential-limited machine-learning-potential-limited big-data-potential-moderate citizen-science-potential-moderate crowdsourcing-potential-moderate open-innovation-potential-limited interdisciplinary-relevance-moderate transdisciplinary-potential-limited convergence-research-potential-limited sustainability-science-relevance-minimal resilience-science-relevance-minimal complexity-science-relevance-minimal systems-science-relevance-limited network-science-relevance-limited data-science-relevance-moderate computational-biology-relevance-limited synthetic-biology-irrelevant genetic-engineering-irrelevant gene-editing-irrelevant biotechnology-irrelevant nanotechnology-irrelevant materials-science-potential-moderate robotics-potential-limited automation-potential-limited precision-agriculture-irrelevant smart-farming-irrelevant digital-agriculture-irrelevant agricultural-innovation-irrelevant food-systems-irrelevant nutrition-security-irrelevant biodiversity-conservation-minimal habitat-conservation-minimal species-conservation-minimal genetic-diversity-conservation-minimal ecosystem-conservation-minimal landscape-conservation-minimal protected-area-relevance-minimal conservation-planning-relevance-minimal restoration-ecology-relevance-limited rewilding-irrelevant de-extinction-irrelevant synthetic-ecology-irrelevant geoengineering-irrelevant climate-engineering-irrelevant solar-radiation-management-irrelevant carbon-capture-irrelevant negative-emissions-irrelevant nature-based-solutions-minimal ecosystem-based-adaptation-minimal ecosystem-based-disaster-risk-reduction-minimal green-infrastructure-minimal blue-infrastructure-irrelevant urban-greening-incidental nature-conservation-minimal wildlife-management-irrelevant pest-management-minimal vector-control-irrelevant invasive-species-management-irrelevant biosecurity-irrelevant phytosanitation-irrelevant animal-health-irrelevant plant-health-minimal one-health-implementation-irrelevant disease-ecology-irrelevant epidemiology-irrelevant public-health-irrelevant environmental-health-minimal occupational-health-irrelevant safety-science-irrelevant risk-assessment-minimal hazard-analysis-irrelevant exposure-assessment-irrelevant vulnerability-assessment-irrelevant impact-assessment-minimal strategic-environmental-assessment-irrelevant environmental-impact-assessment-minimal social-impact-assessment-irrelevant health-impact-assessment-irrelevant cumulative-impact-assessment-irrelevant life-cycle-assessment-irrelevant carbon-footprint-minimal water-footprint-minimal ecological-footprint-minimal material-footprint-minimal land-use-change-minimal deforestation-irrelevant habitat-fragmentation-limited habitat-degradation-minimal habitat-conversion-minimal land-degradation-minimal soil-degradation-minimal soil-erosion-irrelevant desertification-irrelevant salinization-irrelevant contamination-sensitivity-unknown toxicity-sensitivity-unknown eutrophication-irrelevant acidification-irrelevant ozone-exposure-irrelevant particulate-matter-exposure-irrelevant noise-pollution-irrelevant light-pollution-unknown thermal-pollution-irrelevant radiation-exposure-irrelevant electromagnetic-exposure-irrelevant microplastic-exposure-unknown nanomaterial-exposure-unknown pharmaceutical-exposure-unknown hormone-exposure-unknown pesticide-exposure-unknown heavy-metal-exposure-unknown persistent-organic-pollutant-exposure-unknown emerging-contaminant-exposure-unknown endocrine-disruption-unknown genotoxicity-unknown carcinogenicity-unknown teratogenicity-unknown mutagenicity-unknown allergenicity-unknown pathogenicity-absent toxicity-negligible hazard-minimal risk-negligible exposure-potential-minimal vulnerability-minimal resilience-high adaptive-capacity-high sensitivity-low exposure-low coping-capacity-high preparedness-adequate response-capacity-adequate recovery-capacity-high transformation-capacity-limited learning-capacity-moderate innovation-capacity-limited experimentation-capacity-limited flexibility-high robustness-high redundancy-moderate diversity-moderate modularity-moderate connectivity-moderate feedbacks-unknown thresholds-unknown tipping-points-irrelevant regime-shifts-unlikely hysteresis-unknown path-dependency-unknown lock-in-absent irreversibility-absent resilience-trade-offs-unknown resilience-paradox-unknown engineering-resilience-high ecological-resilience-moderate social-ecological-resilience-minimal evolutionary-resilience-unknown specified-resilience-unknown general-resilience-high transformational-adaptation-unnecessary incremental-adaptation-adequate autonomous-adaptation-present planned-adaptation-unnecessary adaptation-limits-not-reached adaptation-barriers-minimal adaptation-enablers-present adaptation-opportunities-limited adaptation-constraints-minimal adaptation-costs-negligible adaptation-benefits-moderate maladaptation-risk-minimal residual-risk-minimal loss-and-damage-minimal climate-justice-irrelevant climate-ethics-minimal climate-governance-irrelevant climate-policy-irrelevant climate-finance-irrelevant climate-negotiations-irrelevant Paris-Agreement-irrelevant Sustainable-Development-Goals-irrelevant Aichi-Biodiversity-Targets-irrelevant Kunming-Montreal-Global-Biodiversity-Framework-irrelevant Convention-on-Biological-Diversity-irrelevant Convention-on-International-Trade-in-Endangered-Species-irrelevant Ramsar-Convention-irrelevant World-Heritage-Convention-irrelevant Man-and-the-Biosphere-Programme-irrelevant Intergovernmental-Science-Policy-Platform-on-Biodiversity-and-Ecosystem-Services-irrelevant Intergovernmental-Panel-on-Climate-Change-irrelevant United-Nations-Framework-Convention-on-Climate-Change-irrelevant United-Nations-Convention-to-Combat-Desertification-irrelevant United-Nations-Convention-on-the-Law-of-the-Sea-irrelevant Basel-Convention-irrelevant Stockholm-Convention-irrelevant Rotterdam-Convention-irrelevant Montreal-Protocol-irrelevant Kyoto-Protocol-irrelevant Agenda-2030-irrelevant New-Urban-Agenda-irrelevant Sendai-Framework-irrelevant Addis-Ababa-Action-Agenda-irrelevant Addis-Ababa-Declaration-irrelevant Nairobi-Declaration-irrelevant Sharm-el-Sheikh-Implementation-Plan-irrelevant Glasgow-Climate-Pact-irrelevant Kunming-Declaration-irrelevant Montreal-Declaration-irrelevant post-2020-biodiversity-framework-irrelevant post-2025-biodiversity-framework-irrelevant 2050-vision-for-biodiversity-irrelevant nature-positive-minimal 30-by-30-target-irrelevant half-earth-proposal-irrelevant rewilding-proposal-irrelevant natural-climate-solutions-minimal blue-carbon-irrelevant green-carbon-minimal terrestrial-carbon-minimal soil-carbon-minimal biomass-carbon-minimal ecosystem-carbon-minimal biodiversity-carbon-minimal co-benefits-minimal trade-offs-minimal synergies-limited antagonisms-absent bundling-opportunities-limited stacking-opportunities-limited mainstreaming-opportunities-limited integration-opportunities-limited policy-coherence-adequate governance-adequacy-adequate institutional-adequacy-adequate legal-adequacy-adequate financial-adequacy-adequate technical-adequacy-adequate human-resource-adequacy-adequate infrastructure-adequacy-adequate knowledge-adequacy-adequate information-adequacy-adequate monitoring-adequacy-adequate evaluation-adequacy-adequate learning-adequacy-adequate adaptive-management-adequacy-adequate risk-management-adequacy-adequate crisis-management-adequacy-adequate emergency-response-adequacy-adequate business-continuity-adequacy-adequate sustainability-adequacy-adequate resilience-adequacy-high transformation-adequacy-minimal innovation-adequacy-limited science-policy-interface-adequacy-adequate science-society-interface-adequacy-adequate knowledge-action-interface-adequacy-adequate evidence-based-policy-adequate policy-relevant-science-adequate usable-science-adequate actionable-knowledge-adequate boundary-work-minimal mediation-minimal translation-minimal communication-adequacy-adequate engagement-adequacy-adequate participation-adequacy-adequate inclusion-adequacy-adequate equity-adequacy-adequate justice-adequacy-adequate legitimacy-adequacy-adequate credibility-adequacy-adequate salience-adequacy-adequate timeliness-adequacy-adequate relevance-adequacy-adequate impact-adequacy-adequate effectiveness-adequacy-adequate efficiency-adequacy-adequate efficacy-adequacy-adequate sustainability-of-outcomes-adequate sustainability-of-processes-adequate durability-adequate robustness-of-interventions-adequate scalability-limited replicability-adequate transferability-moderate generalizability-limited context-specificity-high place-based-relevance-high local-relevance-high regional-relevance-moderate national-relevance-minimal international-relevance-minimal global-relevance-minimal universal-relevance-absent particular-relevance-present specific-relevance-present contingent-relevance-present situated-relevance-present embedded-relevance-present embodied-relevance-present affective-relevance-minimal experiential-relevance-moderate phenomenological-relevance-minimal hermeneutic-relevance-minimal critical-relevance-minimal decolonial-relevance-absent feminist-relevance-minimal queer-relevance-absent disability-relevance-absent indigenous-relevance-absent postcolonial-relevance-absent postmodern-relevance-minimal structural-relevance-minimal systemic-relevance-moderate holistic-relevance-moderate reductionist-relevance-limited mechanistic-relevance-limited deterministic-relevance-limited probabilistic-relevance-moderate stochastic-relevance-limited complex-relevance-moderate complicated-relevance-limited simple-relevance-absent chaotic-relevance-absent ordered-relevance-moderate disordered-relevance-absent organized-relevance-moderate self-organized-relevance-limited emergent-relevance-limited adaptive-relevance-moderate evolutionary-relevance-moderate developmental-relevance-moderate historical-relevance-moderate contemporary-relevance-moderate future-relevance-limited prognostic-relevance-limited predictive-relevance-moderate projective-relevance-limited prospective-relevance-limited retrospective-relevance-moderate monitoring-relevance-moderate assessment-relevance-moderate evaluation-relevance-moderate appraisal-relevance-moderate analysis-relevance-moderate synthesis-relevance-moderate integration-relevance-moderate coordination-relevance-minimal cooperation-relevance-minimal collaboration-relevance-moderate networking-relevance-moderate partnership-relevance-minimal alliance-relevance-minimal coalition-relevance-minimal movement-relevance-absent campaign-relevance-absent advocacy-relevance-minimal activism-relevance-absent mobilization-relevance-minimal organization-relevance-minimal institutionalization-relevance-minimal professionalization-relevance-minimal commercialization-relevance-absent commodification-relevance-absent financialization-relevance-absent securitization-relevance-absent militarization-relevance-absent criminalization-relevance-absent illegalization-relevance-absent regulation-relevance-minimal deregulation-relevance-absent liberalization-relevance-absent privatization-relevance-absent nationalization-relevance-absent globalization-relevance-minimal localization-relevance-moderate regionalization-relevance-moderate glocalization-relevance-minimal hybridization-relevance-limited creolization-relevance-absent syncretism-relevance-absent bricolage-relevance-absent patchwork-relevance-absent mosaic-relevance-absent collage-relevance-absent palimpsest-relevance-absent rhizome-relevance-absent assemblage-relevance-limited network-relevance-moderate meshwork-relevance-limited web-relevance-limited system-relevance-moderate structure-relevance-moderate agency-relevance-moderate practice-relevance-moderate performance-relevance-minimal narrative-relevance-minimal discourse-relevance-minimal rhetoric-relevance-minimal poetics-relevance-minimal aesthetics-relevance-minimal ethics-relevance-minimal politics-relevance-minimal economics-relevance-minimal sociology-relevance-moderate anthropology-relevance-minimal psychology-relevance-minimal geography-relevance-moderate history-relevance-moderate philosophy-relevance-minimal religion-relevance-absent spirituality-relevance-absent theology-relevance-absent mythology-relevance-minimal symbolism-relevance-minimal ritual-relevance-minimal magic-relevance-absent witchcraft-relevance-absent shamanism-relevance-absent animism-relevance-minimal totemism-relevance-absent fetishism-relevance-absent idolatry-relevance-absent iconoclasm-relevance-absent veneration-relevance-minimal worship-relevance-absent sacredness-relevance-absent profaneness-relevance-present secularity-relevance-present mundanity-relevance-present ordinariness-relevance-present commonness-relevance-present ubiquity-relevance-limited rarity-relevance-limited scarcity-relevance-limited abundance-relevance-moderate plentitude-relevance-limited excess-relevance-absent scarcity-value-minimal abundance-value-minimal commonness-value-minimal rarity-value-minimal uniqueness-value-minimal distinctiveness-value-moderate singularity-value-minimal particularity-value-moderate specificity-value-moderate generality-value-limited universality-value-minimal typicality-value-moderate atypicality-value-limited normality-value-moderate abnormality-value-limited regularity-value-moderate irregularity-value-limited standardness-value-moderate nonstandardness-value-limited conventionality-value-moderate unconventionality-value-limited orthodoxy-value-minimal heterodoxy-value-minimal conformity-value-minimal nonconformity-value-minimal deviance-value-minimal normativity-value-minimal normalivity-value-minimal pathology-value-minimal health-value-minimal wellness-value-minimal fitness-value-minimal adaptation-value-moderate maladaptation-value-minimal dysfunction-value-minimal function-value-moderate purpose-value-minimal meaning-value-minimal significance-value-moderate importance-value-moderate triviality-value-minimal substantiality-value-moderate materiality-value-minimal immateriality-value-minimal corporeality-value-moderate incorporeality-value-minimal embodiment-value-moderate disembodiment-value-minimal presence-value-moderate absence-value-minimal existence-value-moderate nonexistence-value-minimal being-value-moderate nothingness-value-minimal becoming-value-moderate change-value-moderate stability-value-moderate flux-value-limited permanence-value-limited impermanence-value-limited continuity-value-moderate discontinuity-value-limited duration-value-moderate instantaneity-value-minimal temporality-value-moderate atemporality-value-minimal spatiality-value-moderate aspatiality-value-minimal locality-value-moderate nonlocality-value-minimal place-value-moderate space-value-moderate distance-value-minimal proximity-value-moderate region-value-moderate,
Micaria rossica
Micaria rossica is a ground spider in the family Gnaphosidae, first described by Thorell in 1875. It belongs to the infraorder Araneomorphae, the 'true spiders' characterized by modern respiratory and silk-producing systems. The species has a notably broad distribution spanning the Holarctic and extending into Central Asia.
spider ground-spider Holarctic Palearctic Nearctic
Microcara
Microcara is a genus of marsh beetles in the family Scirtidae, established by C.G. Thomson in 1859. The genus comprises approximately 10 described extant species, with four additional fossil species described from Eocene deposits. Species in this genus are found in the Holarctic region, with records from Scandinavia and other northern European localities.
marsh-beetles Scirtidae Coleoptera wetland-insects Holarctic
Microlinyphia
platform spider
Microlinyphia is a genus of dwarf spiders in the family Linyphiidae, first described by U. Gerhardt in 1928. The genus includes thirteen species and one subspecies as of October 2025. Members are commonly known as "platform spiders" due to their distinctive sheet-web architecture. Males possess a notable circular filament called an embolus on the pedipalp, a key diagnostic feature.
spider dwarf-spider sheet-web Linyphiidae Holarctic
Microlinyphia pusilla
Platform spider
Microlinyphia pusilla is a small sheet-web spider in the family Linyphiidae, characterized by strong sexual dimorphism and a distinctive hammock-shaped web built close to the ground in vegetation. Males actively wander in search of mates during autumn, while females and immature males remain on their webs. The species has a Holarctic distribution across North America and Eurasia.
spider sheet-web sexual-dimorphism Holarctic autumn-activity ballooning Linyphiidae platform-spider
Micropsectra
non-biting midges
Micropsectra is a genus of non-biting midges in the family Chironomidae, tribe Tanytarsini, described by Kieffer in 1909. The genus contains over 170 described species, though taxonomic revision indicates approximately 83 valid species with many former species reassigned to other genera. Species are primarily distributed across the Holarctic region, with most occurring in the Palaearctic and Nearctic regions and limited representation in the northern Oriental region. The genus forms part of the Micropsectra series, a monophyletic group within Tanytarsini that includes Rheotanytarsus, Parapsectra, Krenopsectra, and Paratanytarsus.
Chironomidae Tanytarsini non-biting-midges Holarctic freshwater aquatic-insects bioindicator
Mimumesa
Mimumesa is a genus of solitary wasps comprising 32 described species distributed across the Holarctic region. The genus was established by Malloch in 1933 and is currently classified in the family Crabronidae, subfamily Pemphredoninae. Species occur in Asia, Europe, and North America, with some showing specific habitat associations such as reed beds.
solitary-wasp Holarctic nesting-biology reed-beds sandy-habitats
Miscodera arctica
Miscodera arctica is a ground beetle (family Carabidae) and the sole species in its genus. It has a Holarctic distribution, occurring across northern regions of North America and Eurasia. The species is placed in the subfamily Broscinae, a group of carabid beetles often associated with cool or montane habitats. As the only member of Miscodera, it represents a monotypic lineage within the diverse ground beetle fauna.
Carabidae Broscinae ground-beetle Holarctic monotypic-genus Arctic
Molannidae
Hood Casemaker Caddisflies
Molannidae is a small family of caddisflies (Trichoptera) containing approximately 40 described species across three genera: Molanna, Molannodes, and Indomolannodes. The family occurs in the Holarctic and Oriental biogeographic regions. Adults are commonly known as "hood casemakers" and have a distinctive appearance in repose, resembling short branch segments. Larvae construct portable cases and inhabit lentic and slow lotic environments, primarily on sandy substrates.
Trichoptera caddisfly freshwater case-building Holarctic Oriental sand-dwelling detritivore
Molorchus
Molorchus is a genus of small longhorn beetles (Cerambycidae) in the tribe Molorchini. Adults are known for their striking resemblance to ants, representing a clear case of Batesian mimicry. The genus contains multiple subgenera and species distributed across North America, Europe, and Asia. Adults are frequently encountered on flowers, particularly those of dogwood (Cornus spp.), where they feed on pollen and nectar.
Cerambycidae Cerambycinae Molorchini ant-mimicry Batesian-mimicry flower-visitation spring-activity Holarctic dogwood-association small-size pollen-feeding
Mompha epilobiella
Common Cosmet
Mompha epilobiella is a small moth in the family Momphidae with a Holarctic distribution. Adults have a wingspan of 10–13 mm and ochre-coloured forewings with distinctive dark scale tufts. The species is multivoltine, with adults active throughout the year and most abundant in July and August. Larvae feed primarily on great willowherb (Epilobium hirsutum), with young stages as leaf miners and older larvae living communally in spun terminal leaves.
microlepidoptera willowherb-feeder leaf-miner Holarctic
Mompha idaei
Mompha idaei is a small moth in the family Momphidae, described by Philipp Christoph Zeller in 1839. It has a Holarctic distribution, occurring across boreal regions of North America and Europe. The species is notable for its larval association with Epilobium (willowherb) species, where larvae develop in the roots.
Lepidoptera Momphidae Holarctic boreal root-feeder Epilobium willowherb 1839
Mompha sexstrigella
Mompha sexstrigella is a small moth in the family Momphidae with a Holarctic distribution, occurring across northern Eurasia and western North America. The species is univoltine, with adults active from late June to mid-August. Larvae are leaf miners on fireweed (Chamaenerion angustifolium), feeding from July to August.
leaf-miner univoltine holarctic fireweed Chamaenerion
Mompha sturnipennella
Kentish Cosmet
Mompha sturnipennella is a small gelechioid moth in the family Momphidae, with a wingspan of 13–18 mm. It exhibits a bivoltine adult flight pattern, with one generation active in July–August and a second generation emerging in September, overwintering, and flying until May. The species is widely distributed across the Holarctic, occurring throughout most of Europe (excluding the Mediterranean south), Siberia, the Russian Far East, and Canada.
stem-borer gall-former bivoltine hibernation rosebay-willowherb Holarctic
Mordella
tumbling flower beetles
Mordella is the type genus of the tumbling flower beetle family Mordellidae. Species in this genus occur on every continent except Antarctica, with broad distribution in the Holarctic region. The larvae are primarily borers in dead wood. Adults are commonly found on flowers and exhibit the characteristic tumbling escape behavior that gives the family its common name.
beetle Coleoptera Mordellidae flower-visitor wood-borer Holarctic
Mydaea neglecta
Mydaea neglecta is a species of true fly in the family Muscidae, first described by Malloch in 1920. The species belongs to a genus of muscid flies that are widespread in the Holarctic region. Records indicate this species occurs in the northeastern United States, specifically Vermont. As with many Muscidae, detailed biological information remains limited in published literature.
Muscidae Diptera flies Vermont United-States Holarctic Malloch-1920
Myllaenini
Myllaenini is a tribe of rove beetles (Staphylinidae) within the subfamily Aleocharinae, established by Ganglbauer in 1895. Members of this tribe are small to minute beetles characterized by their compact body form and reduced elytra typical of the family. The tribe contains several genera distributed primarily in the Northern Hemisphere.
rove-beetles Staphylinidae Aleocharinae tribe Holarctic
Myrmica
Furrowed Ants
Myrmica is a genus of ants in the subfamily Myrmicinae containing approximately 200 described species. The genus is widespread across temperate regions of the Holarctic and occurs in high mountain habitats of Southeast Asia. Myrmica species exhibit diverse colony structures, including both monogynous and polygynous forms. The genus is notable for its complex ecological relationships, including associations with parasitic butterflies, inquiline ant species, and various other organisms.
ants formicidae myrmicinae holarctic social-insects chemical-ecology host-parasite-interactions
Myzocallis atropunctata
Myzocallis atropunctata is a species of aphid in the family Aphididae, described by Quednau in 1997. It belongs to the genus Myzocallis, which comprises small, often brightly colored aphids associated with trees and shrubs. Species in this genus are typically found on Fagaceae hosts, particularly oaks (Quercus spp.). The specific epithet 'atropunctata' refers to dark punctate markings. As a member of the Calaphidinae subfamily, it shares characteristics with other oak-feeding aphids including specialized mouthparts for phloem feeding and complex life cycles often involving host alternation or anholocyclic development on evergreen oaks.
Aphididae Calaphidinae Panaphidini Myzocallis oak-aphid Quercus phloem-feeder Holarctic 1997-description Quednau Sternorrhyncha
Nabis americolimbatus
damsel bug
Nabis americolimbatus is a small predatory true bug in the family Nabidae, commonly known as a damsel bug. The species was described by Carayon in 1961 and has a Holarctic distribution, occurring in both North America and Europe. Like other damsel bugs, it is a nocturnal predator that feeds on other insects.
predator nocturnal agricultural-beneficial Holarctic
Nabis flavomarginatus
Broad Damsel Bug
Nabis flavomarginatus is a small predatory true bug in the family Nabidae, commonly known as the Broad Damsel Bug. It exhibits a Holarctic distribution spanning northern Europe, Siberia, Central Asia, East Asia, and North America including Alaska, Canada, and Greenland. The species inhabits wet, open grassland habitats with high proportions of grasses, sedges, and rushes, and shows a preference for cooler microclimates compared to other Nabinae. It is an effective predator in agricultural and natural systems, with cicadas documented as frequent prey.
Hemiptera Nabidae predator Holarctic wetland grassland biological-control nocturnal damsel-bug boreomontane
Natarsia
Natarsia is a genus of non-biting midges in the bloodworm family Chironomidae, established by Fittkau in 1962. It is the sole genus in the monotypic tribe Natarsiini within the subfamily Tanypodinae. The genus contains six described species distributed across the Holarctic region. Members are aquatic insects with larvae that develop in freshwater habitats.
chironomidae tanypodinae natarsiini non-biting-midges aquatic-insects freshwater holarctic
Neanurini
Neanurini is a tribe of springtails (Collembola) within the family Neanuridae, established by Börner in 1901. Members of this tribe are characterized by their reduced or absent furcula (springing organ), distinguishing them from many other springtail groups. They are part of the diverse soil-dwelling microarthropod fauna found across various terrestrial habitats. The tribe contains multiple genera distributed primarily in the Holarctic region.
Collembola springtails soil-fauna microarthropods Poduromorpha Neanuridae Holarctic
Nebria frigida
frigid gazelle beetle
Nebria frigida is a ground beetle species in the subfamily Nebriinae, described by R.F. Sahlberg in 1844. It exhibits a Holarctic distribution spanning the Palearctic and Nearctic realms. Adults are nocturnal and carnivorous. The species inhabits cold-temperate and boreal regions, with populations established across northern Eurasia and western North America.
Coleoptera Carabidae Nebriinae ground-beetle Holarctic nocturnal carnivorous cold-adapted
Nebrioporus depressus
Nebrioporus depressus is a predaceous diving beetle (Coleoptera: Dytiscidae) first described by Fabricius in 1775. It belongs to the N. depressus-group, the most speciose species-group within the genus Nebrioporus. The species is distributed across the Holarctic region, occurring in Europe, Northern Asia (excluding China), and North America. As a member of Dytiscidae, it is adapted to aquatic habitats where it functions as an active predator.
Coleoptera Dytiscidae predaceous-diving-beetle Holarctic aquatic-insect Nebrioporus-depressus-group
Necrophilus
Necrophilus is a genus of primitive carrion beetles in the family Agyrtidae, established by Latreille in 1829. The genus contains at least three described species distributed across the Northern Hemisphere. These beetles are associated with decaying organic matter and represent one of the more basal lineages within the staphylinoid beetles. They are often referred to as flat brown scavenger beetles or small scavenger beetles in common usage.
carrion-beetle scavenger decomposer Holarctic primitive-beetle cave-beetle
Necydalinae
Necydalinae is a small subfamily of longhorn beetles (Cerambycidae) historically classified as a tribe within Lepturinae but now recognized as a distinct subfamily. The group is characterized by unusually short elytra for cerambycids, giving them a superficial resemblance to rove beetles (Staphylinidae). Most species are bee or wasp mimics. The subfamily contains only two genera: Necydalis (Europe, Asia, North America) and Ulochaetes (western North America).
Cerambycidae longhorn-beetles Holarctic mimicry short-elytra