Csiroleon New, 1985

Machado, Renato Jose Pires & Oswald, John David, 2020, Morphological phylogeny and taxonomic revision of the former antlion subtribe Periclystina (Neuroptera: Myrmeleontidae: Dendroleontinae), Zootaxa 4796 (1), pp. 1-322 : 37-38

Csiroleon New, 1985

Type species. Csiroleon tumidipalpus New, 1985 , by original designation. Nomenclatural gender: masculine.

Diagnosis. Ocular setae present; labial palpi much longer than maxillary palpi; palpimacula opening a long slit; tibial spurs reaching the apex of T1; pretarsal claws capable of closing against T5.

Description. Head: Vertex moderately domed. Ocular setae elongate. Antennae short with club well developed, flagellomeres almost as long as wide at base, much wider than long at apex. Labial palpi greatly elongate, with tip rounded. Palpimacula opening slit-like, located apically. Thorax: Pronotum slightly wider than long. Miller’s organ absent. Wings: Fairly broad, Banksian lines absent. Forewing with CuA fork located near origin of RP; two or three presectoral crossveins; subcostal veinlets simple; posterior area about the same width as prefork area. Hind wing MP fork located near RP origin; one presectoral crossvein. Male pilula axillaris present. Legs: Femur slightly enlarged; short, about same length as head width. Proleg sense hair elongate, longer than femur. Tibial spurs long, extending to T1 apex. Pretarsal claws capable of closing against T5. Male Terminalia: Ectoproct posterior margin rounded in lateral view; gonarcus thin and arched; mediuncus absent; paramere simple, with tip more sclerotized than base. Female Terminalia: Ectoproct posterior margin rounded, with some cavisetae ventrally; lateral gonapophyses rounded, beset with cavisetae; posterior gonapophyses stout set with long black setae; anterior gonapophyses absent; 9 th tergite without membranous digitiform process; ventral membrane with a central structure covered with short setae; pregenital plate small.

Distribution ( Fig. 5 ). Australia: NSW*, NT, QLD*, SA*, WA. Known from sparse records across mainland Australia.

Included species (2 spp.). Csiroleon fasciatus sp. nov., C. tumidipalpus .

Biology. Unknown.

Etymology. Csiro - (from CSIRO , an acronym for the Commonwealth Scientific and Industrial Research Organization, an Australian governmental research agency) + - leon (from Greek leon, lion; a traditional antlion genusgroup name ending), in recognition of CSIRO’s important role in supporting entomological research in Australia.

Comments. The genus is known from two species, C. tumidipalpus and C. fasciatus sp. nov. These species are very distinct from other Australian antlions because of their elongate labial palpi, a unique character within Dendroleontinae . For phylogenetic relationships see Fig. 4 .

Figures

FIGURE 4. Strict consensus tree of morphology-based parsimony analysis of species belonging to the former subtribe Periclystina (ingroup, names in black), and outgroups (names in red). Former Glenoleon species are shown on blue branches, former Austrogymnocnemia species on green branches. Numbers above branches are Bremer support values; numbers below branches are bootstrap values (shown where>50%).

FIGURE 5. Distribution of Anomaloplectron and Csiroleon species.