Woodland
Guides
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.
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.
Mesopsocus immunis
woodland barklouse
Mesopsocus immunis is a barklouse species in the family Mesopsocidae, commonly known as the woodland barklouse. It occurs across Western Europe and Hungary, inhabiting woodland environments where it feeds on lichens, algae, and other organic material on tree bark. The species has been introduced to North America, with records from Canada.
Metriorrhynchomiris dislocatus
Wild Onion Mirid
Metriorrhynchomiris dislocatus is a mirid plant bug known for extreme color polymorphism, with at least fifteen documented color forms. Adults measure approximately 6.5 mm and are active primarily from April to July. The species is associated with woodland habitats in eastern North America, with documented associations to False Solomon's Seal and Wild Geranium.
Microchrysa flavicornis
green gem
Microchrysa flavicornis is a small European soldier fly in the family Stratiomyidae, commonly known as the green gem. Adults are active during summer months and are associated with woodland edges and hedgerows. The species exhibits sexual dimorphism in coloration, with females displaying metallic green on the abdomen and frons. Larvae have been recorded from dung.
Microtomus luctuosus
Tamaulipan White-winged Assassin
Microtomus luctuosus is a species of assassin bug in the family Reduviidae, native to the Americas. It belongs to the subfamily Hammacerinae, which includes species commonly known as bark assassin bugs. The species has been recorded across a broad geographic range spanning North, Central, and South America. Like other members of its genus, it is likely associated with woodland habitats and cryptic microhabitats such as beneath bark. The specific epithet 'luctuosus' (Latin for 'mournful' or 'sorrowful') may refer to its coloration.
Myas coracinus
woodland ground beetle
Myas coracinus is a species of ground beetle in the family Carabidae, described by Thomas Say in 1923. It is classified within the genus Myas and occurs in woodland habitats across North America. Like other carabid beetles, it is a ground-dwelling predator. Specific details about its biology remain limited in published literature.
Mydas fulvifrons
Mydas fulvifrons is a species of mydas fly (family Mydidae), a group of large, wasp-mimicking flies related to robber flies. The genus Mydas contains some of the largest flies in North America. Like other mydas flies, adults are presumed to be nectar feeders, while larvae are believed to be predators of woodboring beetle larvae. The specific epithet 'fulvifrons' refers to the tawny or yellowish-brown frontal region of the head.
Nemapogon
Fungus moths
Nemapogon is a genus of small tineid moths in the subfamily Nemapogoninae, comprising approximately 69 described species as of 2007. Species occupy woodland habitats where larvae develop within bracket fungi on dead wood. Some species are attracted to light and may occasionally be captured in pheromone traps intended for clothes moths. The genus includes species with divergent feeding habits: most are fungivores, while at least one species (N. gersimovi) has been intercepted feeding on stored seeds and grains.
Nemapogon clematella
Barred White Clothes Moth
Nemapogon clematella, commonly known as the barred white clothes moth, is a small moth in the family Tineidae. It occurs across most of Europe and parts of eastern North America, including Maryland and North Carolina. The species inhabits woodland environments. It belongs to a genus that includes several species associated with stored products and seed-feeding.
Nemapogon cloacella
Cork Moth
A small fungus moth with wingspan 10–18 mm, characterized by irregularly mottled forewings in black, brown, white and grey. Larvae feed primarily on bracket fungi, particularly oak mazegill (Daedalea quercina) and birch polypore (Piptoporus betulinus), with plant debris consumed when fungal hosts are unavailable. Adults are crepuscular, active throughout summer, and typically encountered at dusk. Widespread across western Palearctic and North America, with preferred habitat in woodlands containing abundant dead trees.
Neotibicen canicularis
dog-day cicada, dog-day harvestfly, heatbug, Northern Dog-day Cicada
Neotibicen canicularis is an annual cicada species found across much of North America, commonly known as the dog-day cicada or dog-day harvestfly. Unlike periodical cicadas that emerge in synchronized broods every 13 or 17 years, this species appears every summer, though individuals require several years to develop underground. Adults are active during the hot midsummer period traditionally called the "dog days." The species has been documented as a host for multiple flesh fly parasitoids in the family Sarcophagidae, including several first-record associations.
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Oncopsis is a genus of leafhoppers in the family Cicadellidae, subfamily Macropsinae. The genus is characterized by pronotal striations that run parallel to the hind margin. Species occur across the Holarctic region, with documented diversity in Europe, Asia, and North America. Many species exhibit strong host plant specificity, particularly for trees in the families Betulaceae and Corylaceae.
Ophiomyia osmorhizae
Ophiomyia osmorhizae is a recently described species of leaf-mining fly in the family Agromyzidae, first characterized in 2019. The species name references its association with plants in the genus Osmorhiza. As a member of the genus Ophiomyia, it likely produces linear or serpentine leaf mines in host plant foliage. The species is known from a limited number of observations, reflecting both its recent description and specialized host relationship.
Pacifastacus leniusculus
Signal Crayfish
The signal crayfish is a large North American freshwater crayfish introduced to Europe in the 1960s to replace declining native fisheries. It has become one of the most ecologically impactful invasive decapods in Europe, outcompeting native crayfish and serving as a carrier of crayfish plague (Aphanomyces astaci). The species establishes self-sustaining populations rapidly, with six age cohorts documented within a few years of introduction. It shows sex- and size-specific coloration patterns, with males displaying more saturated and brighter ventral claw surfaces than females, suggesting a role in intraspecific communication.
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elegans
Elegant Tailed Slug Moth
Packardia elegans is a small moth species in the family Limacodidae, commonly known as the elegant tailed slug moth. It occurs in eastern North American woodlands and forests, with a range extending from Quebec and Maine south to Georgia and west to Missouri. The species has a forewing length of 10–12 mm. Larvae feed on woody plants including beech, cherry, and oak. Two subspecies are recognized: P. e. elegans and P. e. fusca.
Panorpa anomala
common scorpionfly
Panorpa anomala is a species of scorpionfly in the family Panorpidae, first described by Carpenter in 1931. It occurs in North America, where it inhabits moist wooded environments. As a member of the genus Panorpa, it shares the characteristic elongated rostrum and upturned male genitalia that give scorpionflies their common name.
Papilio eurymedon
Pale Swallowtail, Pallid Swallowtail
Papilio eurymedon, commonly known as the pale swallowtail or pallid swallowtail, is a swallowtail butterfly native to western North America. It is distinguished from the western tiger swallowtail by its white-cream to very pale yellow coloration. The species exhibits single-brooded development across most of its range, with multiple broods along the Pacific Coast. Adults are active from April through October, with peak abundance in May and July.
Parcoblatta notha
Arizona Wood Cockroach
Parcoblatta notha is a large, pale-colored wood cockroach endemic to Arizona. It is one of twelve species in the genus Parcoblatta. Males possess fully developed wings and are capable of flight, while females have reduced wings approximately half as long and cannot fly. The species is occasionally found in homes near wooded areas, where it may become a minor nuisance.
Parcoblatta pennsylvanica
Pennsylvania Wood Cockroach, Pennsylvanian cockroach
Parcoblatta pennsylvanica, commonly known as the Pennsylvania wood cockroach, is a native North American cockroach species found in eastern and central regions of the continent. Unlike many cockroach pests, this species is primarily associated with outdoor woodland habitats and is not considered a significant household pest. The species is notable as a favored host for the parasitoid wasp Ampulex canaliculata, which uses it as prey for its larvae. Adults are attracted to light and may occasionally enter structures, but do not establish indoor populations.
Parcoblatta virginica
Virginia wood cockroach
Parcoblatta virginica, the Virginia wood cockroach, is a small woodland cockroach species measuring approximately 10 mm as an adult. It is native to deciduous forest habitats in eastern North America, where it inhabits leaf litter and decaying wood. The species exhibits strong sexual dimorphism in wing development and coloration. Unlike many cockroach species, it is not a household pest and cannot survive indoors due to low humidity requirements.
Pentodontini
rhinoceros beetles
Pentodontini is the most diverse tribe within the subfamily Dynastinae (rhinoceros beetles), containing over 100 genera distributed across multiple biogeographic regions. Most genera are restricted to a single biogeographic region. The tribe is characterized by substantial morphological diversity, with generic-level identification often relying on mouthpart morphology in females and secondary sexual characters (horns, claw modifications, antennal club length) in males.
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hconnectivity-conservationcorridorbuffer-zoneprotected-areanational-parknature-reservewildlife-refugewilderness-areaworld-heritage-sitebiosphere-reserveRamsar-siteImportant-Bird-AreaKey-Biodiversity-AreaAlliance-for-Zero-Extinction-siteconservation-priorityhotspotcrisis-ecoregionglobal-200last-of-the-wildhuman-footprintcumulative-impactthreat-indexvulnerability-indexadaptive-capacityexposuresensitivityresilienceresistancerecoveryrestorationrehabilitationreintroductiontranslocationex-situin-situcaptive-breedingbotanic-gardenzoogene-bankseed-banktissue-banksperm-bankoocyte-bankembryo-bankDNA-bankfrozen-zooarkinsurancesafety-netde-extinctiongenetic-rescuegenetic-restorationgenetic-augmentationgenetic-managementpopulation-managementmetapopulationsource-sinkpatchmatrixlandscapeseascapeecosystembiomeecoregionprovincezoneregiondistrictsitelocalityhabitatmicrohabitatnicheecological-nichefundamental-nicherealized-nichetrophic-nichespatial-nichetemporal-nichebiotic-nicheabiotic-nichemultidimensional-nichen-dimensional-nicheHutchinsonian-nicheGrinnellian-nicheEltonian-nicheresourcerequirementlimitationstressdisturbanceperturbationfluctuationvariabilityheterogeneitycomplexitydiversityredundancystabilitypersistenceadaptationacclimationplasticityevolvabilityheritabilityselectiondriftflowmutationrecombinationspeciationcoalescencedivergenceconvergenceparallelismhomoplasyanalogyhomologysynapomorphysymplesiomorphyautapomorphyapomorphyplesiomorphyderivedancestralprimitiveadvancedbasalcrownstemnodebranchcladegradesubfamilyfamilysuperfamilyinfraordersuborderordersuperorderinfraclasssubclassclasssuperclasssubphylumphylumsuperphylumkingdomdomainlifeorganismindividualetc.Phalacrocera
Phalacrocera is a genus of crane flies in the family Cylindrotomidae, subfamily Cylindrotominae. The genus contains 11 described species, including the widespread P. replicata. Larvae are specialized feeders on mosses, while adults inhabit damp wooded environments. Most species have restricted geographic ranges, though P. replicata occurs across northern regions of North America, Europe, and Asia.
Phalaenostola eumelusalis
Dark Phalaenostola Moth, Punctuated Owlet
Phalaenostola eumelusalis is a noctuid moth in the subfamily Herminiinae, commonly known as the Dark Phalaenostola Moth or Punctuated Owlet. It occurs across eastern and central North America, ranging from southern Canada through the northeastern and north-central United States. The species is moderately well-documented with over 2,000 observations, suggesting it is relatively common within its range. Adults are nocturnal and attracted to light.
Pheidole dentigula
Woodland Big-headed Ant
Pheidole dentigula is a species of big-headed ant in the genus Pheidole, first described by Smith in 1927. As with other members of this hyperdiverse genus, it exhibits a dimorphic worker caste system with minor workers and major soldiers. The species is native to North America and has been documented in woodland habitats.
Phyllotreta bipustulata
woodland flea beetle
Phyllotreta bipustulata, commonly known as the woodland flea beetle, is a species of flea beetle in the family Chrysomelidae. It is native to North America and has been recorded in Canadian provinces including Manitoba, Ontario, and Québec. As a member of the flea beetle group, it possesses enlarged hind femora adapted for jumping. The species is part of a genus containing several economically significant agricultural pests, though specific details about this particular species' ecology remain limited.
Pisenus humeralis
Pisenus humeralis is a species of polypore fungus beetle in the family Tetratomidae, originally described as Cryptophagus humeralis by Kirby in 1837. It is one of approximately 20 described species in the genus Pisenus, which are specialized associates of polypore fungi. The species is documented from eastern North America, with records from Canada (New Brunswick, Ontario, Québec) and the United States.
Platypezidae
Flat-footed Flies
Platypezidae is a family of small true flies (Diptera) comprising over 250 species worldwide. Adults are commonly known as flat-footed flies due to their characteristically modified tarsal segments, particularly in males. The family is primarily associated with woodland habitats where larvae develop as fungivores. Adults exhibit distinctive swarming behavior for mating and are frequently observed performing rapid, erratic movements on vegetation. The family was formerly broader in circumscription, with Opetiidae and some genera now placed in Atelestidae removed based on phylogenetic evidence.
Poecilus lucublandus
Woodland Ground Beetle
Poecilus lucublandus is a species of woodland ground beetle in the family Carabidae, native to North America. It is one of several Poecilus species found in woodland and forested habitats. The species has been documented in studies examining the effects of agricultural practices on beneficial ground beetle populations, where it serves as a useful indicator of environmental disturbance. Two subspecies are recognized: P. l. lucublandus and P. l. manhattanis.
Poemenia
Poemenia is a genus of ichneumonid wasps in the subfamily Poemeniinae. The genus comprises ectoparasitoids that attack small xylophilous bees (Apoidea) nesting in tunnels or cavities. Larval morphology indicates an ectoparasitoid lifestyle, with the mature larva of Poemenia albipes being the first described for the genus.
Polyporivora
flat-footed flies
Polyporivora is a genus of flat-footed flies (Platypezidae) comprising approximately eight described species. The genus is distinguished by its obligate association with polypore fungi, where larvae develop within host fruiting bodies. Species occur primarily in the Holarctic region, with documented records from Europe, including recent rediscoveries in Central and Southern Europe. The genus was established by Kessel & Maggioncalda in 1968.
Polytribax
Polytribax is a genus of ichneumonid wasps in the subfamily Cryptinae containing approximately 15 described species. Members are parasitoids of Lepidoptera pupae, with females adapted for ground-level foraging in leaf litter and soil. The genus exhibits strong sexual dimorphism, particularly pronounced in Polytribax perspicillator. Species are distributed across the Western Palaearctic with records extending to the Oriental and Nearctic realms.
Psyrassa
Psyrassa is a genus of longhorn beetles (Cerambycidae) in the tribe Elaphidiini. Species in this genus are small to medium-sized cerambycids with elongated bodies. The genus was established by Francis Pascoe in 1866 and is distributed in the Americas. Members are attracted to fermented bait traps, suggesting adult feeding on sugary or fermenting substances.
Ptenothrix maculosa
Ptenothrix maculosa is a globular springtail in the family Dicyrtomidae, native to the temperate west coast of North America from Alaska to California. First described by Swedish entomologist Henrik Schött in 1891, this species exhibits extreme color polymorphism, leading to decades of misidentification and the synonymization of several conjectured undescribed species. Definitive identification requires microscopic examination of setal arrangements on the abdomen and furca. It serves as a decomposer in woodland ecosystems and has become a focal species for citizen science monitoring through photo-based identification.
Pterostichus adoxus
Pterostichus adoxus is a species of ground beetle in the family Carabidae, commonly referred to as a woodland ground beetle. It is distributed across North America, with records from Canada and the United States. The larvae are predatory, consistent with the general feeding ecology of many carabid beetles. The species was described by Thomas Broun in 1908.
Pterostichus agonus
Pterostichus agonus is a species of ground beetle in the family Carabidae, first described by G.H. Horn in 1880. The species exhibits a Holarctic distribution, occurring across Europe, Northern Asia (excluding China), and North America. Two subspecies are recognized: P. a. agonus and P. a. averenskii. As a member of the genus Pterostichus, it belongs to a diverse group of woodland ground beetles characterized by their elongated body form and predatory habits.
Pterostichus amethystinus
Pterostichus amethystinus is a species of ground beetle in the family Carabidae, first described by Mannerheim in 1843. It belongs to the large genus Pterostichus, a diverse group of predatory beetles commonly known as woodland ground beetles. The species is distributed across northern North America including Alaska, Canada, and the contiguous United States. As with other members of its genus, it is likely a nocturnal predator inhabiting forest floor habitats, though specific ecological details remain poorly documented in published literature.
Pterostichus angustus
woodland ground beetle
Pterostichus angustus is a species of ground beetle in the family Carabidae, native to North America. It is classified as a woodland ground beetle, indicating association with forested habitats. The species was originally described by Dejean in 1828 under the basionym Feronia angusta. Like other members of the genus Pterostichus, it is likely a nocturnal, predatory beetle, though specific ecological details remain poorly documented.
Pterostichus atratus
Pterostichus atratus is a woodland ground beetle in the family Carabidae. The species is sometimes classified in the genus Abacidus rather than Pterostichus, reflecting ongoing taxonomic uncertainty. It occurs in North America, with records from the United States and Canada. As a member of Carabidae, it is presumed to be a ground-dwelling, predatory beetle typical of forest habitats.
Pterostichus barri
Pterostichus barri is a species of ground beetle in the family Carabidae, described by Bousquet in 2006. It belongs to a large genus of woodland ground beetles found primarily in the Northern Hemisphere. The species is known from North America, though detailed information about its biology and ecology remains limited.
Pterostichus barryorum
woodland ground beetle
Pterostichus barryorum is a species of ground beetle in the family Carabidae, described by Ball in 1962. It is one of many species within the large genus Pterostichus, which comprises numerous woodland-dwelling carabid beetles found across North America. The species is recorded from Alaska, Canada, and the United States.
Pterostichus caribou
Pterostichus caribou is a species of woodland ground beetle in the family Carabidae, described by Ball in 1962. It belongs to the large genus Pterostichus, which contains numerous ground beetle species distributed across the Northern Hemisphere. The species is recorded from North America and inhabits woodland environments. Like other members of its genus, it is likely a predatory beetle active on the ground surface.
Pterostichus caudicalis
Pterostichus caudicalis is a species of ground beetle in the family Carabidae, described by Thomas Say in 1823. It is classified as a woodland ground beetle and occurs in North America, with distribution records from Canada and the United States. Like other members of the genus Pterostichus, it is a predatory beetle that inhabits forest floor environments. The species is part of the diverse Pterostichinae subfamily, which contains numerous ground-dwelling carabid beetles.
Pterostichus circulosus
woodland ground beetle
Pterostichus circulosus is a species of ground beetle in the family Carabidae, described by Lindroth in 1966. It belongs to the large genus Pterostichus, which comprises numerous woodland-dwelling carabid beetles. The species is known from North America, with records from Alaska, Canada, and the United States. Like other members of its genus, it likely inhabits forest floor habitats where it functions as a generalist predator.
Pterostichus commutabilis
Pterostichus commutabilis is a species of ground beetle in the family Carabidae, native to North America. First described by Motschulsky in 1866 under the basionym Loxandrus commutabilis, this beetle is classified as a woodland ground beetle. The species is known from distribution records in Canada and the United States.
Pterostichus congestus
woodland ground beetle
Pterostichus congestus is a species of ground beetle in the family Carabidae. It is found in North America, particularly in Alaska and the northern United States. Like other members of the genus Pterostichus, it is a ground-dwelling beetle adapted to woodland habitats. The species was described by Ménétriés in 1843.
Pterostichus costatus
Pterostichus costatus is a woodland ground beetle in the family Carabidae. It occurs across a broad holarctic distribution spanning Europe, Northern Asia (excluding China), and North America. The species inhabits forested environments and is part of a large genus of ground beetles characterized by relatively robust body forms.
Pterostichus crenicollis
Pterostichus crenicollis is a species of ground beetle in the family Carabidae, described by LeConte in 1873. It belongs to the large genus Pterostichus, one of the most diverse genera within the carabid subfamily Pterostichinae. The species is documented from North America, with records from Alaska, Canada, and the United States. Like other members of its genus, it is presumed to be a ground-dwelling predator inhabiting woodland environments.
Pterostichus diligendus
Pterostichus diligendus is a species of ground beetle in the family Carabidae, described by Chaudoir in 1868. It belongs to the large genus Pterostichus, which contains numerous woodland-dwelling species. The species is documented from North America, with records from Canada and the United States. Like other members of its genus, it is likely a predatory beetle associated with forest floor habitats.
Pterostichus ebeninus
woodland ground beetle
Pterostichus ebeninus is a species of ground beetle in the family Carabidae, described by Dejean in 1828. It is classified as a woodland ground beetle and is found in North America, specifically in Canada and the United States. The species belongs to the large genus Pterostichus, which contains numerous similar-looking ground beetle species that require careful examination for identification. Information on its specific biology and ecology remains limited.