Macrophyte-associated

Guides

• Triaenodes

  Triaenodes is a genus of long-horned caddisflies (family Leptoceridae) containing at least 170 described species. The genus has a cosmopolitan distribution, with species documented across the Neotropics, North America, Europe, and Asia. Larvae construct portable cases and are primarily aquatic, with some species exhibiting specialized swimming behavior to navigate between aquatic macrophytes. The genus serves as the type genus for the tribe Triaenodini.

  caddisflyaquatic-insectlong-horned-caddisflycase-building-larvaswimming-larvaemacrophyte-associated

• 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.

  caddisflyaquatic-insectcase-buildingswimming-behaviorNorth-AmericaLeptoceridaeTrichopteramacrophyte-associatedloticlentic