15 December 2019 The genus Nosa Navás, 1911 The genus Nosa Navás, 1911 (Neuroptera, Myrmeleontidae, Palparinae) André Prost 1 rue de l’Eglise, F-39320 Loisia, France;
[email protected] Received 26th September 2018; revised and accepted 2nd September 2019 Abstract. The genusNosa introduced by Navás (1911) was redefined byInsom & Carfi (1989). Fifteen taxa were eventually assigned to the genus, although as a result of synonymies, the cat- alogue by Stange (2004) recognizes only two species: Nosa tigris (Dalman) and Nosa tristis (Hagen). A review of the type material, and a review of male genitalia, indicates that the taxon tristis Hagen and its two subspecies, tristis niansanus Kolbe and tristis brevifasciatus Stitz, do not belong to Nosa and should return to the group of species within African Palpares that have not yet been assigned to new genera. On the other hand, it is proposed to consider that the genus Nosa Navás consists of four valid species: Nosa leonina Navás, Nosa tigris (Dalman), Nosa hama- ta (Kolbe), and Nosa adspersa Navás. Synonymies are discussed. The geographical distribution of each species is given. Further key words. Afrotropical region, taxonomy, revision of genus, distribution Introduction Navás (1911a) introduced the genus Nosa, to differentiate those species within the ge- nus Palpares Rambur which possess two radial sectors in the fore wings. He did not pro- pose any other discriminant character. He included at that time a single species, Nosa leonina from the Belgian Congo, which is consequently the type species for the genus, as he formally confirmed it in a subsequent publication (Navás 1912a).