Leptoceridae

Definition

A family of caddisflies (order Trichoptera), commonly called long-horned caddisflies or silverhorns, characterized by antennae that are typically much longer than the body—often two to three times the wing length. The family is the second largest in Trichoptera, with larvae that are generally predatory or scavenging in lentic and lotic freshwater habitats. Adults are often nocturnal and attracted to light.

Etymology

From Greek leptos (thin, slender) + keras (horn), referring to the elongated antennae

Example

Larvae of the genus Oecetis (Leptoceridae) construct slender, tapered portable cases from sand grains and plant material, and are common in slow-moving streams where they prey on chironomid larvae and other small invertebrates.

Synonyms

• long-horned caddisflies
• silverhorns

Related Terms

• Trichoptera
• caddisfly
• Ceraclea
• Oecetis
• Nectopsyche
• aquatic insect
• lotic ecology
• case-building

Usage Notes

The genus Ceraclea is an exception within the family, having relatively short antennae but distinguished by paired dark curved lines on the mesonotum. Leptoceridae larvae are often identified by their elongated, cylindrical bodies and cases that are typically longer and more slender than those of other caddisfly families. The family is cosmopolitan but most diverse in tropical and temperate regions.