Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Family Leptoceridae - Long-horned Caddisflies

Longhorned Caddisfly caddisfly - Triaenodes marginata - male Black Long-horned Beetle with banded antenna - Mystacides sepulchralis Insect - Mystacides Caddisfly - Triaenodes Oecetis cinerascens - female caddisfly larva - Triaenodes tardus plain red-brown longhorn sedge - Oecetis inconspicua
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Trichoptera (Caddisflies)
Suborder Integripalpia
Infraorder Brevitentoria
Superfamily Leptoceroidea
Family Leptoceridae (Long-horned Caddisflies)
Explanation of Names
Leptoceridae Leach 1815
adult body 5-17 mm
Adult antennae very long and slender; 5-segmented maxillary palps in both sexes. Larva mesonotum either membranous or with pair of small, curved plates; claws of hind and middle legs are equal in length; antennae at least 8 times longer than wide. Larval case of some species a "log cabin" type made from twigs; in some other species, the case is made from leaf and stem sections. [adapted from "How to Know the Insects". Roger Bland. 1978.]
Adult antennae usually 1.5 to 3 times as long as wings (personal observation; RM)
throughout North America
larvae are aquatic; adults rest during the day on vegetation near streams and lakes, and fly after sundown (may be attracted to lights)