Bylibaraphanus, Giachino & Eberhard & Perina, 2021

Giachino, Pier Mauro, Eberhard, Stefan & Perina, Giulia, 2021, A rich fauna of subterranean short-range endemic Anillini (Coleoptera, Carabidae, Trechinae) from semi-arid regions of Western Australia, ZooKeys 1044, pp. 269-337 : 269

Bylibaraphanus gen. nov. Figs 46-48

Type species.

Gracilanillus currani Baehr & Main, 2016

Diagnosis.

Included species strongly characterised by: longitudinal elytral grooves absent, pronotum with basal border as wide as or narrower than anterior border, and sides not or only slightly posteriorly sinuate, basal seta of pronotum present, one elytral discal seta present, 8th pore of the umbilicate series placed after the 9th pore (sensu Giachino and Vailati 2011), metafemora not dentate, labial tooth absent, median lobe of aedeagus long and curved, parameres long and slender. Bylibaraphanus differs from Magnanillus Baher, 2017 by elytra with a single discal seta (3 in Magnanillus ) and smaller body size. It differs from Hesperanillus Baher & Main, 2016 by head narrower than pronotum, and pronotum less cordiform. It differs from Gracilanillus Baher & Main, 2016 by the absence of longitudinal elytral grooves.

Description.

Genus with small size species (TL mm 1.43-1.50), anophthalmous. Depigmented integument, medium sclerified, with strong microsculpture and dense pubescence.

Head wider than pronotum base; mandibles short and simple, without hyperplasias. Maxillary palps ovoidal, swollen. Labium transverse, articulated; mentum not fused with submentum. Labial tooth absent. Antennae moniliform.

Pronotum squared, pronotum sides smooth, not or only slightly sinuate at the basal third. Basal angles acute or obtuse, sharp or rounded; basal border as wide as, or narrower, than anterior border; basal seta present.

Elytra convex, subrectangular, elongated, separately rounded, not truncate, apically slightly emarginated, and without longitudinal grooves. Elytral striae missing (except for the sutural stria). Lateral margin, starting from the humeral area, hardly serrulate up to the level of the 7th or 9th pore of the umbilicate series.

Scutellar pore present, large and umbilicate; umbilicate series of type B (sensu Jeannel 1963; Giachino and Vailati 2011) with the 8th pore placed after the 9th one; disc bearing one seta (posterior) in the central area of the disc.

Legs relatively long and slender. Pro- and metafemora unarmed; metatrochanters normal; two protarsomeres slightly dilated and without adhesive phanerae in males.

Aedeagus relatively large; median lobe relatively long, curved, not restricted before the basal bulb, basal bulb of normal size. Parameres long, slender, bearing two or three apical setae. Endophallus with sclerified phanera.

Etymology.

Combined name formed by Bylibara (aboriginal noun for the Pilbara region) and the suffix - phanus taken from Illaphanus genus. The gender of the name is masculine.

Species included.

The following two species belong to this genus:

Bylibaraphanus currani (Baehr & Main, 2016)

Bylibaraphanus cundalinianus sp. nov.

Figures

Figures 46 - 48. Bylibaraphanus gen. et spp. nov., habitus (46, 48) aedeagus in lateral view (47) 46, 47 B. currani (Baehr and Main), ♂ 48 B. cundalinianus sp. nov., HT ♀. Scale bars: 0.1 mm.