Trichoptera

Eggs, 5 instars, Pupa, Adult

Oviposition usually in water

have developmental cohorts

univoltine and bivoltine

once they hatch either bi or multivoltine

Three genera of larvae of caddisfly that are unknown

Larvae pupate inside of their silk retreats in their silk cocoon

that has a small opening at each end.

Larvae pupate in a completely closed cocoon of parchment. cases can be purse-like or doom-like

larvae pupate inside their last larval case after it has been attached to the substrate and seal both ends. openings at each end to allow circulation of water. Prosternal horn. carry their cases around.

From cool to warm temperature the number of families drop down.

The only genus, Phylocentropus.

Larvae differ from those of Polycentropodidae

broad, flattened, setose tarsi (Fig. 16.72) and short, broad mandibles with mesal brushes.

These are adaptations for their feeding on detritus, which they collect with a net placed within tubes that they construct in sand and silt along margins of sandy streams and lakes. The type of capture nets used and their feeding habits vary among species[715]. All North American species occur east of the Great Plains. The life cycle is probably one year, with cohorts emerging from May to August

Net spinners