Cephennomicrus baroalbanus, Jałoszyński, 2018

Jałoszyński, Paweł, 2018, Revision of Cephennomicrus of Australia (Coleoptera, Staphylinidae, Scydmaeninae), Zootaxa 4422 (2), pp. 151-183: 170-171

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Cephennomicrus baroalbanus

sp. n.

Cephennomicrus baroalbanus   sp. n.

( Figs 74–78 View FIGURES 74–78 , 123 View FIGURE 123 )

Type material. Holotype: AUSTRALIA (NORTHERN TERRITORY): ♂, three labels: " 12.50S 132.52E NT / Baroalba Ck.Gorge / 19km Ex N Mt.Cahill / 16 Nov. 1972 / R.W. Taylor" [white, printed], "Berlesate/ ANIC 446 / rainforest" [white, printed], " CEPHENNOMICRUS   / baroalbanus   m. / P. Jałoszyński, '18 / HOLOTYPUS " [red, printed] ( ANIC).

Diagnosis. BL 0.80 mm; body stout, EI 1.09; antennomeres III –IX each as long as broad; antennal club dimerous, sharply delimited and strongly flattened; inner pair of pronotal antebasal pits not connected; frons and vertex in males unmodified; aedeagus moderately elongate, in ventral view median lobe drop-shaped, endophallus complicated, containing four lateral bunches of needle-like sclerites connected at middle, subapical region of dorsal wall with paired setae.

Description. Body of male ( Fig. 69 View FIGURES 64–73 ) stout, uniformly reddish brown; setae on head, pronotum and elytra extremely short, dense and recumbent, barely discernible at magnification 80 ×. BL 0.80 mm.

Head broadest at large, strongly convex and coarsely faceted eyes, HL 0.08 mm, HW 0.23 mm; vertex and frons unmodified, confluent, weakly and evenly convex; supraantennal tubercles weakly elevated. Punctures fine and inconspicuous. Antennae short, with sharply delimited dimerous and strongly flattened club, AnL 0.33 mm, antennomeres I –II distinctly elongate, III –IX each as long as broad, X distinctly transverse, XI about as long as broad.

Pronotum subtrapezoidal, broadest near anterior fourth; PL 0.25 mm, PW 0.36 mm; anterior margin arcuate, posterior margin nearly straight, anterior corners broadly rounded, sides strongly 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, transverse groove absent; lateral pronotal carinae indistinctly serrate. Punctures on pronotal disc fine, inconspicuous.

Elytra oval, broadest distinctly anterior to middle; EL 0.48 mm, EW 0.44 mm, EI 1.09; humeral calli distinct; apices separately rounded. Punctures similar to those on pronotal disc.

Legs moderately long and slender, unmodified.

Aedeagus ( Figs 75–78 View FIGURES 74–78 ) stout; AeL 0.20 mm; median lobe in ventral view drop-shaped, endophallus moderately complicated, with four large and fused lateral bunches of long, needle-like sclerites; dorsal wall with paired setae in subapical region; each paramere with two apical and one subapical setae of equal length.

Female. Unknown.

Distribution ( Fig. 123 View FIGURE 123 ). Northern Territory.

Etymology. Locotypical, after Baroalba Creek.

Remarks. Examination of the aedeagus is necessary to identify this species; the drop-shaped median lobe and two pairs of lateral bunches of needle-like sclerites connected at middle are unique for C. baroalbanus   .


Australian National Insect Collection