Lotic

Guides

Setodes
long-horned caddisfly
Setodes is a genus of long-horned caddisflies in the family Leptoceridae, established by Rambur in 1842. The genus contains at least 230 described species, making it one of the largest genera within the family. Species occur across multiple continents including Africa, Asia, and Madagascar, with colonization patterns suggesting potential dispersal from India to Madagascar. Larval stages are aquatic and inhabit freshwater lotic environments.
Trichoptera Leptoceridae caddisfly aquatic-insects freshwater lotic
Siphlonurus alternatus
Northern Summer Mayfly
Siphlonurus alternatus is a primitive minnow mayfly with a Holarctic distribution spanning North America and Europe. The species is univoltine, overwintering as eggs and emerging as adults between May and August. Larvae inhabit deep pools in rivers, streams, and calcareous lakes, where they feed on fine particulate organic detritus. Adults emerge during daylight hours, with males forming swarms at dawn and dusk.
Ephemeroptera Siphlonuridae mayfly gray-drake Holarctic univoltine detritivore fly-fishing freshwater lotic lentic
Stenocolus
Stenocolus is a monotypic genus of beetles in the family Eulichadidae. The sole described species, S. scutellaris, is a forest stream beetle found in western North America. The genus belongs to a small family of aquatic or semi-aquatic beetles associated with running water habitats.
monotypic aquatic lotic western-north-america stream-beetle
Tortopus
Tortopus is a genus of burrowing mayflies in the family Polymitarcyidae, restricted to six species based on cladistic revision: T. igaranus, T. circumfluus, T. harrisi, T. zottai, T. bellus, and T. arenales. The genus is characterized by distinctive morphological synapomorphies including female parastyli receptors with long anterior furrows, entirely flattened penes, and nymphs bearing two subapical tubercles on mandibular tusks. Nymphs construct U-shaped tunnels in clay banks, a behavior that renders them difficult to sample with standard aquatic survey methods.
Ephemeroptera Polymitarcyidae burrowing-mayflies Neotropical clay-bank-habitat U-shaped-tunnels mandibular-tusks Tortopsis Campsurinae Panamerican-distribution cladistic-revision synapomorphy parastyli-receptors flattened-penes furcasternal-protuberances subapical-tubercles limnological-sampling-bias nymph-morphology adult-morphology type-species-T.-igaranus new-species-T.-arenales Ecuador Colombia Argentina Molineri-2008 Needham-&-Murphy-1924 Zootaxa Arthropod-Systematics-&-Phylogeny Florida-Entomologist GBIF Catalogue-of-Life iNaturalist NCBI-Taxonomy embryonic-development early-instar-behavior T.-harrisi T.-bellus T.-circumfluus T.-zottai T.-igaranus T.-incertus T.-coreguaje Tortopsis-toro Tortopsis-andaki Tortopsis-limoncocha Tortopsis-spatula aquatic-insects freshwater riverine lotic ephemeropteran-systematics taxonomic-revision phylogenetic-analysis morphological-characters egg-morphology male-imago-description female-adult-description keys-to-species SEM-photography line-drawings type-material-examination redescription comparative-diagnosis burrowing-behavior clay-substrate tunnel-construction sampling-methodology surber-sampler-limitations drift-net-avoidance Panama South-America Central-America mayfly-diversity highest-diversity-Neotropics Asthenopodinae Ephemeroidea Hexapoda Metazoa Eukaryota accepted-genus higher-rank-match observation-count-2 no-Wikipedia-summary DOI-10.11646/zootaxa.2481.1.1 DOI-10.11646/zootaxa.2436.1.4 DOI-10.3897/asp.79.e62735 DOI-10.2307/3493493 Scott-et-al.-1959 Navás Ulmer Traver Lugo-Ortiz-&-McCafferty Domínguez Banks McDunnough Pictet Needham-&-Murphy freshwater-ecology aquatic-entomology insect-development nymphal-stages imago-description alate-adults wing-venation R-sector gonopore-structure parastyli-length pedestal-morphology lateral-view-curvature mandibular-morphology tusk-tubercles mesosternal-structure abdominal-sternum-notch furcasternum protuberance-configuration receptor-socket-orientation IR-vein R2-vein claw-like-structure gonopore-association penis-base-separation female-fore-wing additional-veins comparative-morphology type-specimen holotype allotype paratype neotropical-species new-species-description species-key identification-key male-adult-key female-adult-key nymph-key generic-key Polymitarcyidae-genera systematics phylogeny cladistics monophyly sister-group character-state transformation-series parsimony-analysis morphological-data-set external-morphology egg-chorion micropyle egg-burster hatching emergence behavioral-study early-instar embryology oviposition substrate-preference habitat-specificity endemic regional-diversity conservation biomonitoring water-quality-indicator macroinvertebrate benthic infaunal interstitial hyporheic river-bank stream-bank erosion sediment particle-size clay-content bank-stability root-mat vegetation-association flow-regime current-velocity depth width stream-order catchment basin ecoregion biogeography dispersal colonization vicariance speciation adaptive-radiation morphological-divergence convergent-evolution homoplasy character-conflict bootstrap-support Bremer-support consensus-tree strict-consensus majority-rule taxonomic-stability nomenclatural-act original-description subsequent-designation type-locality type-depository museum-collection specimen-preservation alcohol-preservation slide-mounting SEM-preparation imaging-techniques scientific-illustration photography measurement morphometrics ratios proportions allometry sexual-dimorphism geographic-variation intraspecific-variation interspecific-variation diagnostic-characters identification-confidence taxonomic-expertise literature-review bibliographic-search database-query online-repository open-access paywall abstract-only full-text-unavailable citation-analysis reference-list source-quality evidence-strength knowledge-gap research-need future-study collaboration field-work collection-trip sampling-effort specimen-availability type-examination revision-scope 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convergent-character parallel-evolution reversal character-optimization ACCTRAN DELTRAN unambiguous-optimization ambiguous-optimization most-parsimonious-tree tree-length consistency-index retention-index rescaled-consistency-index homoplasy-index character-fit character-congruence character-support branch-support node-support clade-stability taxonomic-stability-index phylogenetic-signal noise saturation substitution-model rate-heterogeneity among-site-rate-variation gamma-distribution invariant-sites model-selection Akaike-information-criterion Bayesian-information-criterion likelihood-ratio-test Bayesian-inference Markov-chain-Monte-Carlo posterior-probability prior-probability hyperprior convergence effective-sample-size burn-in stationarity trace-plot parameter-estimate credible-interval highest-posterior-density tree-topology tree-shape lineage-through-time diversification-rate extinction-rate speciation-rate net-diversification birth-death-model Yule-model coalescent-model 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indicator-species sentinel-species bioindicator ecological-indicator environmental-indicator water-quality-index biotic-index multimetric-index rapid-bioassessment protocol standardization quality-assurance quality-control reference-condition least-disturbed minimally-disturbed best-available type-specific region-specific stream-type river-type functional-feeding-group collector-gatherer collector-filterer scraper shredder predator parasite engulfer piercer burrower sprawler clinger swimmer skater diver surface-dweller benthic-dweller interstitial-dweller hyporheic-dweller phreatic-dweller troglobite stygobite cave-inhabitant spring-inhabitant headwater mid-order high-order lowland montane alpine subtropical tropical temperate boreal arctic antarctic palearctic nearctic afrotropical oriental australian oceanic cosmopolitan widespread restricted relict disjunct-distribution range-extension new-record first-record country-record state-record province-record locality-record elevation-record altitudinal-range latitudinal-range longitudinal-range distribution-pattern range-size range-fill extent-of-occurrence area-of-occupancy IUCN-category threat-status data-deficient not-evaluated least-concern near-threatened vulnerable endangered critically-endangered extinct-in-wild extinct population-trend population-density population-structure age-structure size-structure sex-ratio reproductive-output fecundity fertility mortality survivorship life-table cohort-analysis generation-time doubling-time intrinsic-rate-of-increase finite-rate-of-increase net-reproductive-rate stable-age-distribution stationary-population expanding-population declining-population source-sink-dynamics metapopulation population-viability-analysis minimum-viable-population genetic-diversity heterozygosity allelic-richness private-allele founder-effect bottleneck genetic-drift inbreeding inbreeding-depression outbreeding outbreeding-depression hybridization introgression gene-flow-barrier reproductive-isolation prezygotic-isolation postzygotic-isolation mechanical-isolation temporal-isolation habitat-isolation behavioral-isolation gametic-isolation zygotic-mortality hybrid-inviability hybrid-sterility hybrid-breakdown reinforcement character-displacement ecological-speciation allopatric-speciation sympatric-speciation parapatric-speciation peripatric-speciation centrifugal-speciation divergence-with-gene-flow speciation-continuum anagenesis cladogenesis budding-speciation branching-speciation phyletic-gradualism punctuated-equilibrium stasis trend progression orthogenesis aristogenesis mosaic-evolution co-evolution arms-race Red-Queen-hypothesis evolutionary-stable-strategy frequency-dependent-selection density-dependent-selection r-selection K-selection bet-hedging iteroparity semelparity ploidy-level chromosome-number karyotype genome-size transposable-element gene-duplication neofunctionalization subfunctionalization pseudogene regulatory-evolution cis-regulatory trans-regulatory enhancer promoter silencer insulator transcription-factor signaling-pathway developmental-pathway gene-network epigenetic-modification DNA-methylation histone-modification chromatin-remodeling genomic-imprinting parental-effect maternal-effect paternal-effect cytoplasmic-inheritance mitochondrial-DNA chloroplast-DNA endosymbiont Wolbachia Rickettsia Spiroplasma Cardinium Arsenophonus Hamiltonella Regiella Serratia Buchnera Carsonella Portiera primary-endosymbiont secondary-endosymbiont facultative-symbiont obligate-symbiont mutualistic-symbiont parasitic-symbiont commensal-symbiont pathogen vector disease-transmission zoonosis emerging-infectious-disease biosecurity quarantine eradication control management conservation-biology restoration-ecology habitat-restoration river-restoration stream-restoration floodplain-restoration riparian-restoration wetland-restoration ecosystem-restoration passive-restoration active-restoration assisted-recovery managed-relocation assisted-colonization ex-situ-conservation in-situ-conservation protected-area national-park nature-reserve wildlife-refuge biosphere-reserve world-heritage-site ramsar-site important-bird-area key-biodiversity-area Alliance-for-Zero-Extinction EDGE-species evolutionarily-distinct globally-endangered conservation-prioritization systematic-conservation-planning Marxan Zonation conservation-opportunity conservation-cost conservation-benefit trade-off socioeconomic-factor stakeholder-engagement community-based-conservation adaptive-management monitoring-program long-term-study citizen-science public-participation environmental-education outreach science-communication knowledge-transfer capacity-building institutional-strengthening policy-development legislation regulation enforcement compliance incentive payment-for-ecosystem-services carbon-credit biodiversity-offset mitigation-banking conservation-easement land-trust private-land-conservation conservation-covenant stewardship 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moral-hazard adverse-selection information-asymmetry transaction-cost property-right common-property state-property private-property hybrid-property bundle-of-rights usufruct access withdrawal alienation tenure-security land-tenure water-tenure resource-tenure customary-tenure statutory-tenure legal-pluralism de-facto de-jure formal informal legality legitimacy recognition deviance corruption elite-capture social-capital bonding-capital bridging-capital linking-capital trust reciprocity reputation social-network social-embeddedness structural-hole brokerage closure cohesion density centrality betweenness degree eigenvector PageRank small-world scale-free random-network regular-network hierarchical-network modularity community-structure clustering assortativity homophily heterophily preferential-attachment fitness-model network-evolution network-dynamics temporal-network multilayer-network multiplex-network bipartite-network affiliation-network one-mode-network two-mode-network adjacency-matrix edge-list graph-theory vertex edge node link tie connection path cycle tree forest component giant-component percolation phase-transition criticality self-organized-criticality power-law heavy-tail Pareto-distribution lognormal-distribution exponential-distribution Poisson-distribution binomial-distribution normal-distribution Gaussian-distribution statistical-distribution probability-distribution cumulative-distribution probability-density-function cumulative-distribution-function survival-function hazard-function moment mean median mode variance standard-deviation coefficient-of-variation skewness kurtosis quantile percentile decile quartile interquartile-range range minimum maximum outlier robust-statistic parametric-test non-parametric-test hypothesis-testing null-hypothesis alternative-hypothesis significance-level p-value confidence-interval type-I-error type-II-error statistical-power effect-size sample-size sampling-design experimental-design observational-study quasi-experiment natural-experiment randomized-controlled-trial before-after-control-impact BACI impact-assessment environmental-impact-assessment strategic-environmental-assessment cumulative-impact-assessment social-impact-assessment health-impact-assessment life-cycle-assessment carbon-footprint water-footprint ecological-footprint material-flow-analysis substance-flow-analysis energy-analysis exergy-analysis emergy-analysis input-output-analysis environmentally-extended-input-output social-accounting-matrix computable-general-equilibrium agent-based-model system-dynamics-model Bayesian-network structural-equation-model path-analysis factor-analysis principal-component-analysis cluster-analysis discriminant-analysis canonical-correspondence-analysis redundancy-analysis non-metric-multidimensional-scaling ordination classification regression-analysis linear-regression nonlinear-regression generalized-linear-model generalized-additive-model mixed-effects-model 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Triaenodes tardus
long-horned caddisfly
Triaenodes tardus is a North American long-horned caddisfly in the family Leptoceridae. Larvae construct portable cases and are capable swimmers, using setae on their extended metathoracic legs to move between aquatic macrophytes. Swimming speed averages 1.47 cm/s even while carrying cases nearly double their body mass. The species exhibits reduced swimming activity when vegetation is available, indicating swimming functions primarily for habitat relocation rather than escape.
caddisfly aquatic-insect case-building swimming-behavior North-America Leptoceridae Trichoptera macrophyte-associated lotic lentic
Trichoclinocera
Trichoclinocera is a genus of aquatic dance flies in the family Empididae, subfamily Clinocerinae. The genus contains approximately 30 described species distributed across the Holarctic and eastern Asia, with 16 species recognized from the Nearctic region and nine from Japan. Species are organized into six species-groups based on morphological characteristics, primarily of the male terminalia. The genus was established by Collin in 1941 and has undergone significant taxonomic revision, with Seguyella and Acanthoclinocera recently synonymized under Trichoclinocera.
aquatic dance-flies Empididae Clinocerinae lotic riffle stream-insects Holarctic Japan Nearctic bioindicator
Tricorythodes explicatus
Tricorythodes explicatus is a species of small mayfly in the family Leptohyphidae, first described by Eaton in 1892. It belongs to a genus commonly known as stout crawler mayflies, characterized by reduced wing venation and robust body proportions. The species has been documented in Middle America and North America, though detailed biological studies remain limited.
mayfly Ephemeroptera Leptohyphidae stout-crawler-mayfly aquatic-insect lotic Nearctic
Utacapnia logana
Logan Snowfly
Utacapnia logana is a small winter-emerging stonefly in the family Capniidae, commonly known as the Logan Snowfly. It is native to the Rocky Mountain region of the western United States, where it inhabits cold, clean mountain streams. Adults emerge during winter months, a trait characteristic of the Capniidae family. The species was originally described as Capnia logana in 1965 before being transferred to the genus Utacapnia.
Plecoptera Capniidae winter-stonefly Rocky-Mountains Utah Colorado Wyoming New-Mexico cold-water montane lotic
Wormaldia
Wormaldia is a diverse genus of fingernet caddisflies (family Philopotamidae), comprising approximately 175 extant species globally. It is the second-largest genus in Philopotamidae after Chimarra. Species occur across all biogeographic regions except Australasia, with notable diversification in the Neotropics and Nearctic. The genus includes fossil species from Late Cretaceous Burmese amber, indicating an ancient evolutionary history. Taxonomic revisions have focused heavily on male genitalia morphology for species identification.
caddisfly Trichoptera Philopotamidae fingernet lotic aquatic-insect filter-feeder cryptic-species Alps-biogeography
Zapada columbiana
Columbian forestfly
Zapada columbiana is a species of spring stonefly in the family Nemouridae, commonly known as the Columbian forestfly. It is a small stonefly with a life cycle spanning 2-3 years in Rocky Mountain streams. The species is notable for retaining cervical gills into adulthood, a diagnostic feature of the genus. Nymphs are shredders that feed on moss and detritus, playing a significant role in stream ecosystem nutrient cycling.
stonefly spring-stonefly forestfly aquatic-insect shredder indicator-species lotic Rocky-Mountains