A first comprehensive inventory of Ascalaphidae, Palparidae, and Myrmeleontidae (Insecta: Neuroptera) of Northeastern Nigeria with description of two new species and an overview of genus Bankisus Navás

Investigation of a large collection of Neuroptera from Northeastern Nigeria stored untouched in alcohol for four decades in the National Museum of Natural History, Sofia, provided the opportunity to examine unpublished specimens and conduct a thorough review of published literature, establishing the first comprehensive inventory of Ascalaphidae, Palparidae, and Myrmeleontidae of Northeastern Nigeria to date. Specimens had been collected between 1976 and 1978 in Northeastern Nigeria, mostly in Jos City and Plateau State. Five species of Ascalaphidae, four of Palparidae, and 26 of Myrmeleontidae were identified. Bankisus beroni sp. n. and Creoleon nigrithorax sp. n. are described. Gymnoleon gaillardi is not considered a synonym of Gymnoleon exilis and a new synonymy is established: Gymnoleon externus (Navás, 1911) (= Gymnoleon gaillardi Navás, 1912, syn. n.). An examination of unpublished specimens in museum collections and an exhaustive literature review were conducted in order to draw up a comprehensive inventory of the fauna of Northeastern Nigeria, which to date comprises 11 species of Ascalaphidae, 12 species of Palparidae, and 34 species of Myrmeleontidae, of which one species of Ascalaphidae, two species of Palparidae, and 16 species of Myrmeleontidae, as well as the genera Brevibarbis, Bankisus, and Capicua, had not been reported to occur in Nigeria. The chorological information on the genus Bankisus is reviewed, the ranges of the species are critically discussed and corrected, and all known localities are indicated on a map. Bankisus oculatus is reported for the first time from the Democratic Republic of the Congo. The first recording of Centroclisis lineatipennis in West Africa is reported. Palpares cataractae and Palpares radiatus are deleted from the list of Nigerian fauna. With these new records, the known ranges of eight species are extended by more than 1400 km. In the process of assessing the geographical distribution of species present in Northeastern Nigeria, six species, as well as the genera Myrmecaelurus and Cueta and the tribe Nesoleontini, are reported for the first time from Burkina Faso