The Trichoptera from the group “Stenophylax” are frequent in caves. Until now, following Jeannel’s thought (1926), most authors believed that these animals were found in caves by hazard and were doomed to perish in them. With the use of a light trap it is now demonstrated that cavernicolous Trichoptera not only stay in caves during the entire summer, but also that during autumn (September-October) they leave the caves to lay their eggs in the nearby rivers.
La migration des Trichoptères cavernicoles. Mise en évidence par piégeage lumineux.
International Journal of Speleology,
Available at: https://digitalcommons.usf.edu/ijs/vol4/iss1/10