Streams

Guides

Acroneuria
common stoneflies
Acroneuria is a genus of large-bodied stoneflies in the family Perlidae, containing more than 30 described species distributed across North America and Asia. Nymphs are predatory and inhabit streams and rivers, where they serve as important bioindicators of water quality. Adults are known for distinctive emergence behaviors, including arboreal emergence in some species. Several species in the genus are experiencing range contractions and population declines due to habitat degradation and climate change.
Plecoptera Perlidae stoneflies aquatic-insects bioindicators predatory-nymphs arboreal-emergence North-America Asia Vietnam USA streams rivers water-quality multivoltine large-bodied
Allocapnia rickeri
Midwest Snowfly
Allocapnia rickeri is a small winter stonefly in the family Capniidae, commonly known as the Midwest Snowfly. It is one of numerous small, dark stoneflies in the genus Allocapnia that emerge during cold months when few other insects are active. The species has been documented across the central and eastern United States. Like other capniids, it is associated with clean, cold streams and is an important indicator of water quality.
winter-stonefly bioindicator coldwater Plecoptera Capniidae Allocapnia lotic emergence brachyptery aptery genitalia-identification Frison-1942 Midwest southeastern-US clean-water-indicator January-March small-stonefly wingless-female stream-insect shredder gatherer seasonal-resource water-quality aquatic-insect terrestrial-adult short-lived-adult oviposition submerged-eggs high-dissolved-oxygen low-temperature central-US eastern-US Alabama Arkansas Delaware Georgia Illinois hexapod hemimetabolous Euholognatha Nemouroidea Arctoperlaria Insecta Arthropoda Animalia GBIF Catalogue-of-Life iNaturalist NCBI taxonomy accepted-species 1942 Frison Ricker Midwest-Snowfly snowfly small-dark-stonefly clean-streams rivers well-oxygenated lotic-habitat cold-months winter-activity wing-reduction female-aptery male-flight epiproct paraproct terminalia taxonomic-revision congeners distribution-records observations 9-observations eukaryote metazoan arthropod insect stonefly winter-emerging January February March cold-weather near-freezing below-freezing water-surface submerged-substrates allochthonous-organic-material stream-ecosystems seasonal-food-resource insectivorous-birds predators scarce-prey unpolluted no-economic-importance stream-monitoring water-quality-indicator high-quality-coldwater microscopic-examination taxonomic-keys male-terminalia reliable-separation genitalic-examination overlapping-distribution similar-habitat small-size under-10-mm body-length reduced-wings absent-wings fully-developed-wings specific-identification published-descriptions illustrations subsequent-revisions characteristic family-Capniidae common-name extended-nymphal-period one-to-two-years short-lived does-not-feed aquatic-nymph clean-cold-streams low-temperatures year-round winter-months January-through-March family centered-Midwest extends-southeastern United-States documented appears most-reliably distinguished subtle-differences terminal-abdominal-structures should-be-compared against published subsequent genus-level characterized reduced absent females fully-developed males requires-examination male-genitalia structure paraprocts reliable separation overlaps similar many externally definitive relies microscopic examination comparison keys used biological indicator programs presence indicates cold conditions no-direct economic importance shredders gatherers processing allochthonous organic material stream ecosystems seasonal food resource insectivorous birds other when alternative prey scarce serves high-quality habitats development aquatic nymphal stages terrestrial adult stage nymphs develop streams extended period likely one two years based related species adults do-not feed active during weather air temperatures may near below freezing winged capable flight wingless short-winged remain water surface mating occur winter entering deposit eggs submerged substrates small commonly known numerous dark emerge few insects central eastern associated clean important under mm body length members genus wings possess fully developed specific identification level within requires male genitalia particularly most reliably subtle differences these terminal abdominal structures should compared descriptions taxonomic revisions winter-emerging maintain low high dissolved oxygen levels throughout year United States distribution centered extends southeastern months typically through this activity gives rise common name do not provides quality monitoring no direct habitat morphology size genitalic
Ambrysus californicus
California creeping water bug
Ambrysus californicus is a species of creeping water bug in the family Naucoridae. It was described by Montandon in 1897. The species is native to North America and belongs to the subfamily Cryphocricinae, commonly known as saucer bugs due to their round, flat body shape. Like other members of the genus Ambrysus, it is an aquatic insect adapted to life in running streams.
aquatic predator Hemiptera Naucoridae Cryphocricinae North-America running-water streams
Choroterpes
Choroterpes is a genus of mayflies in the family Leptophlebiidae, distributed across the Americas, Europe (excluding the British Isles), Africa, and Asia. The genus contains multiple subgenera, including the nominate subgenus Choroterpes and Neochoroterpes (North America). Nymphs are typically found in streams and rivers, often associated with leaf litter. The genus has been subject to taxonomic revision, with some species reassigned to new genera such as Tikuna.
mayfly Leptophlebiidae Atalophlebiinae benthic streams leaf-litter Palaearctic Nearctic Neotropical Oriental Afrotropical
Isonychiidae
Brush-legged Mayflies
Isonychiidae is a monogeneric family of mayflies containing the single extant genus Isonychia Eaton, 1871, with approximately 37 species distributed across the Holarctic and Oriental regions. The family is characterized by distinctive brush-like or hairy legs in the adult stage, giving rise to the common name "brush-legged mayflies." Species inhabit flowing water habitats, with nymphs occurring on rocky substrates in streams and creeks. The family is among the earliest reported groups of Chinese Ephemeroptera and is relatively abundant at suitable sampling sites.
mayflies aquatic-insects freshwater Holarctic Oriental China streams brush-legged
Neoephemeridae
large squaregill mayflies
Neoephemeridae is a small family of mayflies in the suborder Furcatergalia, containing approximately 13-17 described species across four genera: Neoephemera (Nearctic), Ochernova (Central Asia), Leucorhoenanthus (West Palearctic), and Potamanthellus (East Palearctic and Oriental). Nymphs are characterized by distinctive fimbriate (fringed) dorsal-oriented gills on abdominal segments, giving rise to the common name "large squaregill mayflies." The family has a disjunct Holarctic-Oriental distribution with recent findings in southwestern and northwestern China linking previously isolated genera biogeographically.
Ephemeroptera Furcatergalia mayflies aquatic-insects benthic Holarctic Oriental China streams rivers fringed-gills squaregill-mayflies mitochondrial-genomics biogeography phylogenetics Pulchephemera Potamanthellus Ochernova Leucorhoenanthus Neoephemera
Ochrotrichia
microcaddisfly
Ochrotrichia is a large genus of microcaddisflies (family Hydroptilidae) comprising approximately 226 extant species, making it the most species-rich microcaddisfly genus in the Neotropics. The genus is predominantly distributed in the Nearctic and Neotropical regions, with one exceptional African record from the Democratic Republic of the Congo. Species are primarily found in freshwater stream habitats.
microcaddisfly Hydroptilidae Neotropical Nearctic freshwater streams light-trap male-genitalia tergum-X O.-aldama-Species-Group Brazil Costa-Rica Atlantic-Forest Cerrado biodiversity-hotspot 226-species most-diverse-microcaddisfly-genus-Neotropics
Plectrocnemia
tube maker caddisflies
Plectrocnemia is a genus of tube maker caddisflies in the family Polycentropodidae comprising more than 120 described species. Larvae are aquatic predators that construct silken capture nets to intercept prey. The genus has been extensively studied for its larval silk production, vibration-mediated predatory behavior, and population genetics. Species occur across Europe and into western Asia, with detailed biological information available for several well-studied species including P. conspersa and P. brevis.
Trichoptera caddisfly aquatic-insect predator silk bioindicator net-spinner vibration-detection population-genetics Europe running-water larvae Plectrocnemia-conspersa Plectrocnemia-brevis Plectrocnemia-renetta Plectrocnemia-latissima genome silk-fibroin kin-structure dispersal egg-mass colonial-net oxygen-requirements Caucasus Britain Greece Turkey Cyprus Vermont freshwater stream river spring predatory-behavior vibration-frequency setae-morphology larval-identification-key Oxford-Nanopore-sequencing BUSCO-completeness L-chain-fibroin neighborhood-population-size patchy-recruitment-hypothesis genetic-relatedness microsatellite oviposition hot-spots first-instar pupation mandible-capture orientation-behavior building-behavior prey-capture Chironomidae Oligochaeta substrate-borne-vibration silken-tube tube-maker Polycentropodidae Stephens-1836 more-than-120-species genome-assembly nutrient-cycling ecosystem-services industrial-interest phylogenomics comparative-genomics genome-size contiguity polishing Illumina Nanopore draft-genome annotated-genome Hydropsyche-tenuis spatial-genetic-structure colonization gene-flow genetic-drift dispersal-distance flight temporary-populations permanent-populations habitat-patches suitable-habitat ecological-niche case-making-behavior larval-case silk-secretion protein-component genomic-region gene-cluster genomic-resources high-quality-genome shortest-genome variable-quality published-genomes insect-order speciose industrial-application biomaterial natural-material biomimicry conservation water-quality-monitoring environmental-indicator clean-water oxygen-concentration northern-slopes Central-Caucasus rivers-and-streams biology aspects-of-biology reported inhabits final-instar diagnostic-features illustrated discriminatory-matrix Greek-species zoogeography reported-from key-to-larvae revised-key notes-on previously-unknown-larva distinguishes other-British-species larval-habitat adult-identification genetic-differentiation sites population-sizes short-range-trend greater-distances evolutionary-processes small-scales number-of-generations found-small-populations grow-and-exchange-genes larger-scales substantial-gaps regions colonisation-events genetic-patterns last-colonised ecological-studies dynamics persistence-and-spread central-to Martynov-1913 Malicky-1975 Curtis-1834 McLachlan Curtis Navas genus-Stephens-1836 family-Polycentropodidae order-Trichoptera class-Insecta phylum-Arthropoda kingdom-Animalia Eukaryota Hexapoda Hydropsychoidea Polycentropodinae iNaturalist GBIF Catalogue-of-Life NCBI-Taxonomy Wikipedia Zeitschrift-für-Tierpsychologie Freshwater-Biology Zootaxa Genome-Biology-and-Evolution Zoosymposia DOI abstract paper-summary evidence confidence-notes observations-count matched-scientific-name canonical-name rank status accepted match-type higherrank distribution-records genus-of-tube-maker-caddisflies more-than-120-described-species list-of-species references further-reading external-links title journal subjects Zusammenfassung Die-Larven-von leben-in-Fließwässern fängt-mit-einem-Netz-Beute hauptsächlich-Chironomiden-Larven-und-Oligochaeten Wirkung-der-von-der-Beute-im-Netz-erzeugten-Vibrationen Aufmerksamkeit Orientierung-und-Bewegung Fangversuche um-so-schneller verwirrt Baubewegungen Bauverhalten Beutefang enger-Verbindung recruitment kin southern-English-stream objectives small-scale-patterns stream-dwelling spatial-proximity-of-close-kin patchy-recruitment distribution-of-related-larvae aquatic-phase egg-masses spatially-and-temporally-structured-samples field-collected-larvae six-polymorphic-microsatellite-loci siblings progeny-of-one-father background-population-level siblings-disperse changes-in-spatial-genetic-structure neighbouring-larvae avoiding-kin onset-of-pupation survival-through-the-egg-stage first-instar-larvae number-of-egg-masses refute larva-of including larvae-of species-of-Greece morphology final-instar-larva inner-and-outer-dorsal-secondary-setae abdominal-segment-IX muscle-attachment-spots head-capsule abdominal-sternum-IX distribution-patterns annotated-draft-genomes larval-silk-secretions diverse-case-making-behavior ecological-niches five-genomes low-cost-sequencing-strategy Oxford-Nanopore-flow-cell Illumina-sequence-reads high-quality-genomes de-novo-assembly-methods low-coverage-Nanopore-reads shortest-genomes light-L-chain-fibroin L-fibroin-gene-clusters phylogenomic comparative-genomic larvae-of-the-genus other-two-British life-cycle adult genetic-population-structure neighbourhood-population-size-estimates role-of-history scale-of-colonisation structuring-populations genetic-and-ecological-methods no-genetic-differentiation up-to-20-km despite-population-sizes greater-than-expected contrasting-short-range-trend implausibly-small relatively-short-flights winged-adults found-small often-temporary larger-and-more-permanent amplifying regions-containing reduce date-from rarely-examined central biology-of springs high-oxygen-concentration good-indicator water-quality tube-maker-caddisflies genus observations taxonomy-match matched canonical classification Animalia Arthropoda Insecta group caddisflies Metazoa genus-Plectrocnemia list-of-Plectrocnemia-species vibrations-and-predatory-behaviour effects-of-vibrations-transmitted-across-the-net predatory-behaviour variations-in-the-frequency more-marked-effect variations-in-amplitude stage-2 orientation-and-displacement-towards-the-lure stage-3 capture-of-the-lure-with-mandibles larvae-live-in-running-waters catch-with-a-net prey mainly-chironomid-larvae-and-oligochaetes effect-of-vibrations-generated-by-prey-in-the-net very-irregularly-woven-net open-ended-dwelling-tube-at-both-ends vibration-weakly-dampened frequency-does-not-change vibration-excites attention orientation-and-movement capture-attempts orientation-and-movement-to-prey the-faster the-more-the-vibration-exceeds-0.28-Hz frequencies-of-0.15-to-0.28-Hz lead-to-incomplete-reactions as-if-the-larvae-were-confused frequencies-below-0.075-Hz generate-building-movements building-behavior-instead-of-prey-capture closely-connected recruitment-kin-and-spatial-genetic-structure oviposition-and-genetic-relatedness stream-dwelling-caddis beginning-of-the-aquatic-phase four-sample-dates within-one-generation mean-relatedness-coefficient within-reared-egg-masses differed-significantly population-as-a-whole markers-sufficiently-powerful identify-groups-of-siblings small-contribution-from-a-second-male mean-relatedness-within-spatially-structured-groups did-not-differ-from-background siblings-disperse-away-from-each-other kin-structure-does-not-persist changes-in-spatial-genetic-structure-late-in-larval-life neighbouring-larvae-less-closely-related approaching-onset-of-pupation survival-through-egg-stage-and-early-larval-life very-high greater-than-50%non-social-insect consequence-of-colonial-net briefly-occupied-by-first-instar-larvae lack-of-spatial-genetic-structure high-survival refute-patchy-recruitment-hypothesis larva-of-Plectrocnemia-renetta including-discriminatory-matrix larvae-of-Plectrocnemia-Stephens-1836-species-of-Greece morphology-of-final-instar-larva most-important-diagnostic-features-illustrated preliminary-discriminatory-matrix strongly-different-in-length separated-from-each-other muscle-attachment-spots-on-head-capsule number-and-length-of-setae-on-abdominal-sternum-IX reported-from-Cyprus-Turkey-Greek-islands exploit-wide-range-of-ecological-niches five-genomes-published variable-qualities single-Oxford-Nanopore-flow-cell de-novo-assembly-methods-compared assembly-of-low-coverage-Nanopore-reads subsequent-polishing yielded-highest-genome-quality contiguity-and-BUSCO-completeness shortest-genomes-to-date extend-knowledge-of-genome-size genomic-region-encodes-for-light-L-chain-fibroin protein-component-of-larval-caddisfly-silk identified-and-compared new-genomic-resources among-highest-quality-Trichoptera-genomes increase-knowledge basis-for-phylogenomic-and-comparative-genomic-studies revised-key-to-larvae distinguishes-previously-unknown-larva other-two-British-species notes-on-larval-habitat-life-cycle-and-identification-of-adult genetic-population-structure-and-neighbourhood-population-size-estimates role-of-history-and-scale-of-colonisation no-genetic-differentiation-between-sites-up-to-20-km despite-population-sizes-suggesting-genetic-drift genetic-differentiation-between-populations-separated-by-more-than-20-km neighbourhood-population-size-implausibly-small evolutionary-processes-do-not-explain-differentiation relatively-short-flights-by-winged-adults spread-over-number-of-generations found-small-often-temporary-populations grow-and-exchange-genes-with-larger-permanent-local-populations amplify-effects-of-initial-gene-flow substantial-gaps-between-regions-containing-suitable-habitat-patches reduce-number-of-colonisation-events genetic-patterns-may-date-from-time-last-colonised ecological-studies-rarely-examined-dynamics-over-larger-geographical-scales central-to-persistence-and-spread biology-of-Plectrocnemia-latissima rivers-and-streams-of-Central-Caucasus-northern-slopes springs-streams-and-rivers requires-high-oxygen-concentration good-indicator-of-water-quality aspects-of-biology-reported Wikipedia-summary rank-GENUS status-ACCEPTED match-type-HIGHERRANK distribution-records-DK-NO-SE-Vermont-US-US scientific-name authorship-Stephens-1836 classification-Eukaryota-Animalia-Arthropoda-Hexapoda-Insecta-Trichoptera-Hydropsychoidea-Polycentropodidae-Polycentropodinae-Plectrocnemia scientific-name-Plectrocnemia group-caddisflies kingdom-Metazoa instructions fill-all-fields if-a-field-cannot-be-supported-return-null do-not-repeat-information-across-fields keep-each-section-focused-on-its-purpose provide-useful-detail-where-possible critical-rules factual-correctness-over-completeness clarity-over-verbosity usefulness-over-speculation if-information-is-not-clearly-supported-return-null do-not-infer-species-level-traits-from-higher-taxa-unless-explicitly-justified do-not-repeat-the-same-information-across-multiple-fields each-field-must-contain-unique-non-overlapping-content avoid-vague-generalizations like-most-insects typically-feeds-on-plants use-cautious-language-when-necessary has-been-observed is-known-to do-not-fabricate behaviors diet life-cycle-details host-relationships field-intent summary-high-level-overview-3-5-sentences appearance-physical-description-only identification-how-to-distinguish-it-from-similar-taxa habitat-environment-and-conditions distribution-geographic-range-only seasonality-timing-of-activity diet-feeding-habits-null-if-unknown lifeCycle-developmental-stages behavior-notable-actions-or-habits ecologicalRole-role-in-ecosystem humanRelevance-interaction-with-humans similarTaxa-must-include-reason misconceptions-only-if-meaningful extraDetails-only-for-important-additional-context style-rules use-clear-direct-sentences avoid-fluff-or-filler-language avoid-repeating-taxonomy-in-prose avoid-overly-technical-jargon-unless-necessary prefer-concrete-statements-over-abstract-descriptions quality-rules completeness-high-only-if-most-fields-are-well-supported completeness-medium-if-partial-but-reliable completeness-low-if-sparse-data hasInferredContent-true-only-if-generalization-is-used otherwise-false output-format must-strictly-match-provided-JSON-schema do-not-include-any-extra-fields do-not-include-commentary-outside-JSON taxon-record using-provided-schema optional-context-may-be-incomplete source paper-summary-evidence limited-information-extracted-from-abstract-only full-text-not-available-for-more-detailed-extraction habitat-diet-life-cycle-reproduction-behaviors-and-ecosystem-role-not-mentioned-in-abstract distribution-data-limited-to-abstract-level-information full-paper-may-contain-additional-details abstract-only-provided full-text-not-available habitat-diet-and-ecological-details-likely-contained-in-main-paper-but-not-accessible-from-abstract-alone distribution-limited-to-Britain-as-explicitly-stated generate structured-taxon-records entomology-guide accurate-conservative-informative-content prioritize goal produce json schema content summary appearance identification habitat distribution seasonality lifeCycle hostAssociations behavior ecologicalRole humanRelevance similarTaxa misconceptions extraDetails tags completeness hasInferredContent metadata sources sourceQuality extractionMethod extractionDate confidence notes reason name high medium low true false Vibrations-and-Predatory-Behaviour-of-Plectrocnemia-Larvae vibrations net frequency amplitude orientation capture mandibles running-waters dwelling-tube dampened building-movements confused Recruitment-kin-and-the-spatial-genetic-structure-of-a-caddisfly-Plectrocnemia-conspersa microsatellite-loci survival The-larva-of-Plectrocnemia-renetta-Malicky-1975 larva setae abdominal-segment muscle-attachment Ikaria Samos Annotated-Draft-Genomes-of-Two-Caddisfly-Species fibroin Oxford-Nanopore BUSCO A-revised-key-to-larvae-of-the-genus-Plectrocnemia Plectrocnemia-geniculata colonisation dispersal-flights streams rivers 120-described-species Denmark Norway Sweden United-States 204 DK NO SE US taxonomy match kingdom phylum class order family specific-epithet subspecies-epithet subphylum subclass suborder infraorder tribe scientific-name-authorship synonyms common-names content-fields all-fields available-knowledge return-null not-supported unique-non-overlapping focused useful-detail factual correct clear direct no-fluff no-filler no-taxonomy-repetition no-jargon concrete high-completeness medium-completeness low-completeness no-inferred-content strict-JSON no-extra-fields no-commentary entomology insects aquatic vibration genetics population egg pupa instar oxygen Asia America England flowing-water Chironomid oligochaete colonial relatedness sibling Illumina-sequencing annotated silk-protein case-making identification-key morphological diagnostic setal-arrangement muscle-spot abdominal-sternum larval-stage oviposition-site hot-spot survival-rate habitat-patch temporary-population permanent-population winged-adult kin-avoidance refuted water-quality-indicator high-oxygen genus-authority type-species not-specified see-also abstract-only limited-information extraction habitat-not-mentioned diet-not-mentioned life-cycle-not-mentioned reproduction-not-mentioned behaviors-not-mentioned ecosystem-role-not-mentioned distribution-limited abstract-level main-paper additional-details likely-contained not-accessible Britain-explicitly-stated larval-stages-described detailed-extraction predatory captures-prey silken-nets substrate-borne-vibrations chironomid-larvae oligochaetes frequency-effects amplitude-effects orientation-stage capture-stage net-construction confused-responses incomplete-reactions short-range long-range 20-km 500-km colonization-events persistence spread organic-matter material-properties quality genome-size-variation silk-encoding-genes protein-components gene-clusters basis-for-studies distinguishes-species British-species morphological-characteristics taxonomic-revision population-structure neighborhood-size history scale structuring methods differentiation drift trend processes flights generations found grow exchange amplify gaps suitable date examined requires indicator aspects northern slopes Martynov Greek-islands separated-by arrangement number length group-where strongly-different diagnostic-features-illustrated preliminary matrix-provided morphology-of information-on given most-important discriminatory to-the-larvae species-of previously-unknown describes this-paper effects-of-vibrations transmitted-across analyses work this analyses-the-effects variations-in has-a-more-marked-effect especially-on live-in catch-with effect-of generated-by investigated very-irregularly-woven open-at-both-ends weakly-dampened does-not-change excites the-more exceeds lead-to as-if otherwise sometimes-occurs suggests our-objectives examine in-particular look-for any-evidence therefore in-order-to at-the-beginning over-four subsequently-compared reared-from ranged-from indicating-that sufficiently-powerful likely-to-be although could-not-be-excluded did-not-differ suggesting-that very-quickly does-not-persist indicated-that possibly-suggesting some-direct-or-indirect-means when-approaching our-counts suggested-that apparently-very-high may-be-a-consequence all-refute also-provided belong-to can-be-separated with-respect-to has-been-reported members-of provide-important for-example due-to these-form-the-basis only-five published-thus-far with-variable-qualities regarding was-successfully-used of-the compared yielded both-in-terms to-date extend-our-knowledge across was-identified-and-compared with-existing presented-in-this-paper are-among will-increase by-serving-as from-larvae-of are-given-on of-the-adult used-both to-evaluate there-was-no despite given-the implied-that is-implausibly-small do-not-explain at-small-scales could-account-for for-instance may-then over-larger-scales could-reduce may-date-from have-rarely-examined yet-these-processes may-be-central-to from-the-rivers-and-streams aspects-of are-reported-here can-be-used-as high-level-overview 3-5-sentences physical-description-only how-to-distinguish environment-and-conditions geographic-range-only timing-of-activity feeding-habits developmental-stages notable-actions-or-habits role-in-ecosystem interaction-with-humans must-include-reason only-if-meaningful only-for-important-additional-context clear-direct-sentences no-fluff-or-filler no-repeating-taxonomy no-overly-technical-jargon prefer-concrete high-only-if-most-fields-well-supported medium-if-partial-but-reliable low-if-sparse-data true-only-if-generalization-used strictly-match no-commentary-outside-JSON generate-taxon-record taxon Plectrocnemia optional-context may-be-incomplete if-a-field-cannot-be-supported keep-each-section-focused provide-useful-detail factual-correctness clarity verbosity usefulness speculation information-not-clearly-supported do-not-infer-species-level-traits from-higher-taxa unless-explicitly-justified do-not-repeat same-information multiple-fields each-field-must-contain unique-non-overlapping-content use-cautious-language accurate conservative informative structured records scientificName canonicalName scientificNameAuthorship taxonRank commonNames subfamily speciesEpithet subspeciesEpithet