Caddisflies
Order Trichoptera
The Caddisflies (Order Trichoptera) includes 465 species across 24 families and 109 genera in our directory.
About Caddisflies
Trichoptera (caddisflies) includes ~14,500 described species worldwide. Larvae are aquatic and build protective cases from silk, sand, pebbles, and plant material - each species creates a distinctive case design.
Economic Impact
Caddisfly larvae are among the most important biological indicators of water quality. Their presence or absence in streams is used by the EPA and state agencies to assess pollution levels and ecosystem health.
Ecological Role
Caddisfly larvae are critical food sources for trout and other freshwater fish, making them essential to recreational fishing industries worth billions annually. Their silk is being researched as an underwater adhesive for medical applications.
Families in Trichoptera (24)
Species in Trichoptera (465)
Phylocentropus lucidus
Phylocentropus lucidus
Phylocentropus placidus
Phylocentropus placidus
Plectrocnemia cinerea
Plectrocnemia cinerea
Plectrocnemia crassicornis
Plectrocnemia crassicornis
Plectrocnemia remota
Plectrocnemia remota
Plectrocnemia variegata
Plectrocnemia variegata
Polycentropus arizonensis
Polycentropus arizonensis
Polycentropus denningi
Polycentropus denningi
Polycentropus maculatus
Polycentropus maculatus
Polycentropus variegatus
Polycentropus variegatus
Pseudostenophylax edwardsi
Pseudostenophylax edwardsi
Pseudostenophylax sparsus
Pseudostenophylax sparsus
Pseudostenophylax uniformis
Pseudostenophylax uniformis
Psilotreta frontalis
Psilotreta frontalis
Psilotreta indecisa
Psilotreta indecisa
Psilotreta labida
Psilotreta labida
Psilotreta rufa
Psilotreta rufa
Psychoglypha avigo
Psychoglypha avigo
Psychoglypha bella
Psychoglypha bella
Psychoglypha subborealis
Psychoglypha subborealis
Psychomyia flavida
Psychomyia flavida
Ptilostomis angustipennis
Ptilostomis angustipennis
Ptilostomis ocellifera
Ptilostomis ocellifera
Ptilostomis postica
Ptilostomis postica
Ptilostomis semifasciata
Ptilostomis semifasciata
Pycnopsyche antica
Pycnopsyche antica
Pycnopsyche circularis
Pycnopsyche circularis
Pycnopsyche gentilis
Pycnopsyche gentilis
Pycnopsyche guttifera
Pycnopsyche guttifera
Pycnopsyche indiana
Pycnopsyche indiana
Pycnopsyche lepida group
Pycnopsyche lepida
Pycnopsyche limbata
Pycnopsyche limbata
Pycnopsyche luculenta
Pycnopsyche luculenta
Pycnopsyche virginica
Pycnopsyche virginica
Rhyacophila acutiloba
Rhyacophila acutiloba
Rhyacophila angelita
Rhyacophila angelita
Rhyacophila carolina
Rhyacophila carolina
Rhyacophila carpenteri
Rhyacophila carpenteri
Rhyacophila formosa
Rhyacophila formosa
Rhyacophila fuscula
Rhyacophila fuscula
Rhyacophila grandis
Rhyacophila grandis
Rhyacophila manistee
Rhyacophila manistee
Rhyacophila nigrita
Rhyacophila nigrita
Rhyacophila oreta
Rhyacophila oreta
Salt and Pepper Microcaddisfly
Agraylea multipunctata
Sandfly Caddisfly
Rhyacophila dorsalis
Setodes incertus
Setodes incertus
Small Red Sedge
Tinodes waeneri
Small Yellow Sedge
Psychomyia pusilla
Smicridea dispar
Smicridea dispar
Smicridea fasciatella
Smicridea fasciatella
Smicridea signata
Smicridea signata
Square Caddisfly
Lepidostoma hirtum
Triaenodes aba
Triaenodes aba
Triaenodes baris
Triaenodes baris
Triaenodes flavescens
Triaenodes flavescens
Triaenodes injusta
Triaenodes injusta
Triaenodes marginata
Triaenodes marginata
Triaenodes reuteri
Triaenodes reuteri
Wormaldia arizonensis
Wormaldia arizonensis
Wormaldia moesta
Wormaldia moesta
brown sedge
Anabolia nervosa
dark Peter
Agrypnia obsoleta
silver-spotted sedge
Setodes argentipunctellus
speckled Peter
Agrypnia varia