Neoillaphanus callawanus, 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

Neoillaphanus callawanus sp. nov. Figs 30-33

Type locality.

WA, Pilbara, 200 km E of Port Hedland, Goldsworthy Mining Area, Callawa deposit, 20°38'16.74"S, 120°18'14.33"E.

Type series.

HT ♂, WA, Pilbara, 200 km E of Port Hedland, Goldsworthy Mining Area, Callawa Mine (drill hole CA0013R), 20°38'16.74"S, 120°18'14.33"E (WGS84), 29 Jul. 2008, P. Bell, Trog trap, Western Australian Museum Entomology Reg. no. 82631 (WAM). PTT: 1 ♂, WA, Pilbara, 200 km E of Port Hedland, Goldsworthy Mining Area, Callawa Mine (drill hole CA0011R) 20°38'16.74"S, 120°18'14.33"E (WGS84), 9 July 2009, P. Bell, Trog net scrape, Western Australian Museum Entomology Reg. no. 82629 (WAM); 1 ♀, WA, Pilbara, 200 km E of Port Hedland, Goldsworthy Mining Area, Callawa Mine (drill hole CA0021R), 20°38'16.74"S, 120°18'14.33"E (WGS84), 29 July 2008, P. Bell, Stygo net haul, Western Australian Museum Entomology Reg. no. 82628 (WAM); 1 ♂, WA, Pilbara, 200 km E of Port Hedland, Goldsworthy Mining Area, Callawa Mine (drill hole CA0011R), 20°38'16.74"S, 120°18'14.33"E (WGS84), 12 June 2009, P. Bell, Stygo net haul, Western Australian Museum Entomology Reg. no. 82630 (CGi); 1 ♀, WA, Pilbara, 200 km E of Port Hedland, Goldsworthy Mining Area, Callawa Mine (drill hole CA0102R), 20°38'16.74"S, 120°18'14.33"E (WGS84), 29 April 2008, P. Bell, Stygo net haul, Western Australian Museum Entomology Reg. no. 82627 (WAM); 1 ♀, WA, Pilbara, 200 km E of Port Hedland, Goldsworthy Mining Area, Callawa Mine (drill hole CA0124R), 20°38'53"S, 114°17'57"E, 28 July 2008, Subterranean Ecology, hauling, Western Australian Museum Entomology Reg. no. 72011 (CGi); 1 ♂, WA, Pilbara, 200 km E of Port Hedland, Goldsworthy Mining Area, Callawa Mine (drill hole CA0008R), 20°38'34"S, 120°18'02"E, 31 May 2009, Subterranean Ecology, hauling, Western Australian Museum Entomology Reg. no. 72012 (WAM); 1 ♀, WA, Pilbara, 200 km E of Port Hedland, Goldsworthy Mining Area, Callawa Mine, 20°38'46"S, 120°17'50"E, 12 June 2009, Subterranean Ecology, bore CA0019R, scraping, Western Australian Museum Entomology Reg. no. 72013 (WAM).

Diagnosis.

Species identified by the characters listed in the genus diagnosis.

Description.

TL mm 1.93-1.97 ♂♂, 2.00-2.04 ♀♀. Body elongated, depigmented, testaceous; integument shiny, with evident microsculpture and medium length pubescence.

Head large, narrower than pronotum; without excess setae. Labium without tooth, mentum articulated. Antennae robust, moniliform, short, reaching the base of the pronotum when stretched backwards. Fronto-clypeal furrow distinct; anterior margin of the epistome subrectilinear.

Pronotum cordiform (max. width / max. length ratio = 1.13), maximum width at the base of the anterior third, and basal border narrower than anterior border; sides slightly and regularly arcuate in anterior part, subrectilinear at the basal half, sinuate and denticulate before basal angles. Anterior angles obtuse, prominent; posterior angles right, sharp at tips. Disc convex, with sparse pubescence of medium length; median groove very shallow, hardly evident. Marginal groove wide and flat, poorly enlarged near the base; anterior marginal setae placed inside the marginal groove, almost on the anterior fifth; basal setae not on the disk and placed before posterior angles.

Legs long and slender, with metatrochanters long and acuminate but not curved and metafemora unarmed; metatrochanters (Fig. 31 ) as long as 2/3 of the femoral length. Two poorly dilated protarsomeres, without adhesive phanerae in males.

Elytra ovoidal, relatively short (max. length / max. width ratio = 1.8), maximum width at the base of the posterior third, not truncated and not emarginated in preapical zone. Disc convex, with longitudinal grooves; integument shiny with evident microsculpture and pubescence of medium length, sparse and upright, not longitudinally aligned. Humeri rounded; post-humeral margin denticulate, with distinct crenulations up to half-length; elytral apices separately rounded. Marginal groove wide and evident almost up to the 7th pore of the umbilicate series.

Chaetotaxy: scutellar pore large, foveate. Umbilicate series with the first three pores of the humeral group very closed to each other and nearly equidistant; 4th pore farther and placed at the end of the basal third of the elytron; 5th pore placed just before the base the apical third of the elytron; 5th and 6th ones spaced out ca. half of the distance between 6th and 7th; 7th and 8th displaced onto the disc; 7th and 8th spaced out ca. as the 8th and 9th. One discal seta placed just before the 7th pore of the umbilicate series.

Aedeagus (Figs 32 , 33 ) large, median lobe long, slender, curved, with basal bulb tight and evident; ventral margin regularly curved from basal bulb to apex; apical blade evident, but short. Endophallus without an evident lamella copulatrix, but with very small, preapical, slightly sclerified stripe. Left paramere elongate, reaching the distal third of median lobe and bearing two setae; right paramere shorter and bearing two apical setae.

Etymology.

The name comes from the Callawa Ridge (type locality) in the NE of the Pilbara region.

Distribution.

Neoillaphanus callawanus sp. nov. is known only from a few drill holes on the Callawa Ridge, 200 km E of Port Hedland, Pilbara, WA.

Figures

Figures 30 - 33. Neoillaphanus callawanus gen. et sp. nov. 30 habitus HT ♂ 31 right metafemor and metatrochanter in ventral view, HT ♂ 32 aedeagus in lateral view, HT ♂ 33 aedeagus in lateral view, PT ♂. Scale bars: 0.1 mm.