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)
Hydropsyche scalaris
Hydropsyche scalaris
Hydropsyche simulans
Hydropsyche simulans
Hydropsyche slossonae
Hydropsyche slossonae
Hydropsyche sparna
Hydropsyche sparna
Hydropsyche venularis
Hydropsyche venularis
Hydropsyche walkeri
Hydropsyche walkeri
Hydroptila armata
Hydroptila armata
Hydroptila callia
Hydroptila callia
Hydroptila grandiosa
Hydroptila grandiosa
Hydroptila icona
Hydroptila icona
Hydroptila rono
Hydroptila rono
Hydroptila waubesiana
Hydroptila waubesiana
Interrupted Long-horned Caddisfly
Leptocerus interruptus
Ironoquia parvula
Ironoquia parvula
Ironoquia punctatissima
Ironoquia punctatissima
Lenarchus rho
Lenarchus rho
Lenarchus rillus
Lenarchus rillus
Lenarchus vastus
Lenarchus vastus
Lepidostoma cascadense
Lepidostoma cascadense
Lepidostoma cinereum
Lepidostoma cinereum
Lepidostoma griseum
Lepidostoma griseum
Lepidostoma hoodi
Lepidostoma hoodi
Lepidostoma jewetti
Lepidostoma jewetti
Lepidostoma pluviale
Lepidostoma pluviale
Lepidostoma podagrum
Lepidostoma podagrum
Lepidostoma reosum
Lepidostoma reosum
Lepidostoma sommermanae
Lepidostoma sommermanae
Lepidostoma stigma
Lepidostoma stigma
Lepidostoma togatum
Lepidostoma togatum
Lepidostoma vernale
Lepidostoma vernale
Leptocerus americanus
Leptocerus americanus
Limnephilus ademus
Limnephilus ademus
Limnephilus concolor
Limnephilus concolor
Limnephilus externus
Limnephilus externus
Limnephilus fagus
Limnephilus fagus
Limnephilus flavastellus
Limnephilus flavastellus
Limnephilus harrimani
Limnephilus harrimani
Limnephilus hyalinus
Limnephilus hyalinus
Limnephilus indivisus
Limnephilus indivisus
Limnephilus kalama
Limnephilus kalama
Limnephilus moestus
Limnephilus moestus
Limnephilus morrisoni
Limnephilus morrisoni
Limnephilus nogus
Limnephilus nogus
Limnephilus occidentalis
Limnephilus occidentalis
Limnephilus parvulus
Limnephilus parvulus
Limnephilus rhombicus
Limnephilus rhombicus
Limnephilus sericeus
Limnephilus sericeus
Limnephilus spinatus
Limnephilus spinatus
Limnephilus submonilifer
Limnephilus submonilifer
Lype diversa
Lype diversa
Marilia flexuosa
Marilia flexuosa
Mayatrichia ayama
Mayatrichia ayama
Medium Sedge
Goera pilosa
Micrasema bactro
Micrasema bactro
Micrasema charonis
Micrasema charonis
Micrasema rusticum
Micrasema rusticum
Micrasema wataga
Micrasema wataga
Molanna blenda
Molanna blenda
Molanna flavicornis
Molanna flavicornis
Molanna tryphena
Molanna tryphena
Molanna ulmerina
Molanna ulmerina
Molanna uniophila
Molanna uniophila
Mystacides alafimbriatus
Mystacides alafimbriatus
Mystacides interjectus
Mystacides interjectus
Namamyia plutonis
Namamyia plutonis
Nectopsyche albida
Nectopsyche albida
Nectopsyche candida
Nectopsyche candida
Nectopsyche diarina
Nectopsyche diarina
Nectopsyche pavida
Nectopsyche pavida
Neophylax aniqua
Neophylax aniqua
Neophylax concinnus
Neophylax concinnus
Neophylax consimilis
Neophylax consimilis
Neophylax fuscus
Neophylax fuscus
Neophylax mitchelli
Neophylax mitchelli
Neophylax rickeri
Neophylax rickeri
Neophylax splendens
Neophylax splendens
Neothremma alicia
Neothremma alicia
Nerophilus californicus
Nerophilus californicus
Neureclipsis crepuscularis
Neureclipsis crepuscularis
Nothotrichia shasta
Nothotrichia shasta
Ochrotrichia tenuata
Ochrotrichia tenuata
Oecetis cinerascens
Oecetis cinerascens
Oecetis osteni
Oecetis osteni
Oligostomis ocelligera
Oligostomis ocelligera
Oligostomis pardalis
Oligostomis pardalis
Onocosmoecus unicolor
Onocosmoecus unicolor
Orthotrichia aegerfasciella
Orthotrichia aegerfasciella
Oxyethira forcipata
Oxyethira forcipata
Oxyethira pallida
Oxyethira pallida
Oxyethira serrata
Oxyethira serrata
Oxyethira zeronia
Oxyethira zeronia
Padunia jeanae
Padunia jeanae
Parapsyche apicalis
Parapsyche apicalis
Parapsyche elsis
Parapsyche elsis
Pedomoecus sierra
Pedomoecus sierra
Phanocelia canadensis
Phanocelia canadensis
Phryganea cinerea
Phryganea cinerea
Phylloicus aeneus
Phylloicus aeneus
Phylloicus mexicanus
Phylloicus mexicanus
Phylocentropus carolinus
Phylocentropus carolinus