Britannica
Sources used in this answer
How do newly emerged caddisflies reach the water surface?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
caddisfly
Adult caddisfly (Trichoptera).
After the caddisfly pupa bites its way out of its cocoon, it reaches the water surface by swimming or crawling, utilizing its hair-fringed middle pair of legs for movement.1