Cephennomicrus proserpinensis, Jałoszyński, 2018

Jałoszyński, Paweł, 2018, Revision of Cephennomicrus of Australia (Coleoptera, Staphylinidae, Scydmaeninae), Zootaxa 4422 (2), pp. 151-183 : 161-163

Cephennomicrus proserpinensis sp. n.

( Figs 37–41 , 123 )

Type material. Holotype: AUSTRALIA (QUEENSLAND): ♂, three labels: "Brandy Creek QLD / 18kmE Proserpine / 100m 21 June –/ 10 Aug 1982 / S. & J.Peck SBP43" [white, printed], "flight intercept / trap / rainforest" [white, printed], " CEPHENNOMICRUS / proserpinensis m. / P. Jałoszyński, '18 / HOLOTYPUS" [red, printed] (ANIC).

Diagnosis. BL 0.80 mm; body moderately stout, EI 1.19; antennomeres III–IX about as long as broad; antennal club dimerous, sharply delimited and strongly flattened; inner pair of pronotal antebasal pits connected by a faint transverse groove; frons in males unmodified, aedeagus slender, with large oval diaphragm located on ventral wall of median lobe.

Description. Body of male ( Fig. 37 ) moderately stout, uniformly reddish brown; setae on head, pronotum and elytra very short, dense and recumbent, but discernible at magnification 40 ×. BL 0.80 mm.

Head broadest at large, strongly convex and coarsely faceted eyes, HL 0.10 mm, HW 0.23 mm; frons and vertex unmodified, confluent, evenly and weakly convex; supraantennal tubercles weakly elevated. Punctures fine and inconspicuous. Antennae short, with sharply delimited dimerous and strongly flattened club, AnL 0.38 mm, antennomeres I–II distinctly elongate, III–IX as long as broad, X distinctly transverse, XI about as long as broad.

Pronotum subtrapezoidal, broadest near anterior fourth; PL 0.23 mm, PW 0.33 mm; anterior margin arcuate, posterior margin nearly straight, anterior corners broadly rounded, sides rounded in anterior third and nearly straight in posterior half, posterior corners strongly obtuse-angled and blunt; base with two lateral pairs of small but distinct pits, inner pair connected by an indistinct, shallow and diffuse transverse groove; lateral pronotal carinae indistinctly serrate. Punctures on pronotal disc fine, inconspicuous.

Elytra oval, broadest distinctly anterior to middle; EL 0.48 mm, EW 0.40 mm, EI 1.19 humeral calli distinct; apices separately rounded. Punctures similar to those on pronotal disc.

Legs moderately long and slender, unmodified.

Aedeagus ( Figs 38–41 ) strongly elongate; AeL 0.25 mm; median lobe in ventral view with very short and indistinctly delimited distal part with its laterodistad corners angulate, flagellum not coiled; each paramere with one long apical and one short subapical seta.

Female. Unknown.

Distribution ( Fig. 123 ). Queensland.

Etymology. Locotypical, after Proserpine, a town in the Whitsunday Region, Queensland, Australia.

Remarks. This species is also externally unremarkable and examination of the aedeagus is necessary for identification.

Figures

FIGURE 123. Distribution of Cephennomicrus in Australia; white circles denote nominal species, solid black circles denote undescribed species known from females only (distribution of undescribed species known from the same localities as nominal ones is omitted).

FIGURES 32–41. Cephennomicrus basalis sp. n. (32–36) and C. proserpinensis sp. n. (37–41). Dorsal habitus (32, 37); aedeagus in ventral (33, 35, 38, 40) and lateral (34, 36, 39, 41) views.