Capnioneura brachyptera Despax 1932

Capnioneura brachyptera Despax, 1932 DIST-2022. This species is endemic to the Pyrenees and the northwest of the Iberian Peninsula and is particularly crenophilous (Vinçon and Pardo 2004). Larvae were captured on the Estargne’s tributaries a 2 to a 5, around 2000 m a. s. l., validating thus the autochthony in these sites. No larvae were collected in sites R, P, and a 1. Thus, the presence of one female in site R, one male in site P, and one male and one female in site a 1 were insufficient to validate autochthony in these sites. Despite their potential low dispersal capacity (Fig. 2 F), these adults were probably dispersing individuals, as site R is very close to site a 4 and site P close to small lateral springs with potential presence of this species (suitable biotope). Autochthony was therefore not validated on the main course of the Estaragne and at site a 1 (Table 3). However, note that, site a 1 exhibits suitable habitat for this species, as the other tributaries a 2 to a 5 (Table 3).