Cephennomicrus wunundarranus, Jałoszyński, 2018

Jałoszyński, Paweł, 2018, Revision of Cephennomicrus of Australia (Coleoptera, Staphylinidae, Scydmaeninae), Zootaxa 4422 (2), pp. 151-183: 165-166

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Cephennomicrus wunundarranus

sp. n.

Cephennomicrus wunundarranus   sp. n.

( Figs 48–53 View FIGURES 42–53 , 123 View FIGURE 123 )

Type material. Holotype: AUSTRALIA (WESTERN AUSTRALIA): ♂, three labels: " 15.04S 125.11E WA / CALM Site 12/1 / Boongaree Is. / Jan. 1989 / N.McKenzie" [white, printed], "Berlesate / ANIC 1282 / closed forest / litter" [white, printed], " CEPHENNOMICRUS   / wunundarranus   m. / P. Jałoszyński, '18 / HOLOTYPUS " [red, printed] ( ANIC). Paratype: 1 ♂, same data as for holotype ( ANIC).

Diagnosis. BL 0.75 mm; body stout, EI 1.13; 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 in males modified, with a small round posteromedian tubercle; aedeagus stout, drop-shaped, with relatively simple endophallus containing median and lateral bunches of needle-like sclerites, subapical region of dorsal wall with paired setae.

Description. Body of male ( Fig. 42 View FIGURES 42–53 ) stout, uniformly light brown; setae on head, pronotum and elytra very short, dense and recumbent, discernible at magnification 80 ×. BL 0.75 mm.

Head ( Fig. 49 View FIGURES 42–53 ) broadest at large, strongly convex and coarsely faceted eyes, HL 0.08 mm, HW 0.18 mm; vertex weakly convex, frons modified, with a small posteromedian tubercle; supraantennal tubercles weakly elevated. Punctures fine and inconspicuous. Antennae short, with sharply delimited dimerous and strongly flattened club, AnL 0.30 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 0.33 mm anterior margin arcuate, posterior margin nearly straight, anterior corners broadly rounded, sides strongly rounded in anterior third and weakly rounded 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 distinctly serrate. Punctures on pronotal disc fine, inconspicuous.

Elytra oval, broadest distinctly anterior to middle; EL 0.43 mm, EW 0.38 mm, EI 1.13; humeral calli distinct; apices separately rounded. Punctures similar to those on pronotal disc.

Legs moderately long and slender, unmodified.

Aedeagus ( Figs 50–53 View FIGURES 42–53 ) relatively stout; AeL 0.18 mm; median lobe in ventral view drop-shaped, endophallus moderately complicated, with two lateral bunches of long, needle-like sclerites flanking a median group of similar 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 ). Western Australia: Boongaree Island.

Etymology. Locotypical, after Wunundarra, the name of Boongaree Island used by the native Uunguu peoples.

Remarks. This is the only Australian species with a simple small and round tubercle on the posterior portion of frons in males; the tubercle, although small, is observable already at magnification 40 ×.


Australian National Insect Collection