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Trichoptera
"Caddisflies have aquatic larvae and are found in a wide variety of habitats such as streams, rivers, lakes, ponds, spring seeps, and temporary waters. The larvae of many species make protective cases of silk decorated with gravel, sand, twigs or other debris"
Gracias Glen Marks... Pero creo que no es un Trichoptera... Esta especie de la foto habita debajo de las piedras de los ríos...