hydroptila angustata mosely, 1939 (trichoptera: hydroptilidae): a significant addition to the micro-caddisfly fauna of northwest africa

The micro-caddisfly fauna of morocco is still poorly known, despite its geographical location and the exceptional diversity of its ecosystems. recent field surveys in northern morocco have resulted in the discovery of hydroptila angustata mosely, 1939, providing the first evidence of its occurrence in freshwater ecosystems of maghreb (northwest africa). illustrations of the male genitalia are presented. the species was found in a protected area located in the middle atlas massif, a cornerstone of aquatic biodiversity in morocco. further entomological studies could result in the discovery of the species elsewhere in morocco and northwest africa. with this addition, the total number of caddisfly species in morocco is now 88.