Integripalpia

Definition

A suborder of Trichoptera (caddisflies) distinguished by adults having an unringed, undivided terminal segment of the maxillary palp. The name derives from Latin integer (entire) + palpus (palp). Larvae are case-makers that construct portable shelters from sand, plant fragments, or other debris beginning in the first instar, with cases often family- or genus-specific in design and materials.

Etymology

From Latin integer (whole, undivided) + palpus (palp, a sensory appendage of the mouthparts), referring to the undivided terminal palp segment.

Example

Larvae of the integripalpian family Limnephilidae construct curved cases from spiral arrangements of plant material, whereas Phryganeidae larvae build straight, four-sided cases using square-cut leaf pieces.

Related Terms

• Annulipalpia
• Trichoptera
• caddisfly
• case-making
• maxillary palp
• larval case

Usage Notes

Forms one of two traditionally recognized suborders of Trichoptera, contrasted with Annulipalpia (fixed-retreat makers with ringed terminal palp segments). Some molecular studies have questioned the monophyly of Integripalpia as traditionally defined. The case-making habit is diagnostic but not exclusive—some Annulipalpia also construct cases, though typically later in development and of different architecture.