Penicillidmus masseyensis, Jałoszyński, Paweł, 2014

Jałoszyński, Paweł, 2014, The smallest Cyrtoscydmini of Australia: revision of Microscydmus Saulcy & Croissandeau and Penicillidmus gen. n. (Coleoptera, Staphylinidae, Scydmaeninae), Zootaxa 3774 (1), pp. 1-30 : 27-28

Penicillidmus masseyensis sp. n.

( Figs. 27 , 36 , 60 , 63 )

Material studied. Holotype: ♂: two labels: " 17.37S 145.34E QLD / BS3 Massey Crk / 2-30 Nov 1995 / L.Umback. 1000m / Malaise trap" [white, printed], " PENICILLIDMUS / masseyensis m. / det. P. Jałoszyński, 2013 / HOLOTYPUS " [red, printed] ( ANIC).

Diagnosis. Male: elytra distinctly darker than head and pronotum; antennomere II about as long as broad; head dorsum finely punctate; internal pair of pronotal ante-basal pits not connected by transverse impression; internal sclerites of aedeagus nearly parallel on entire length.

Description. Body of male ( Fig. 27 ) strongly convex, elongate and slender, with moderately long appendages, BL 0.860 mm; cuticle glossy, elytra dark brown, head and especially pronotum distinctly lighter, appendages light brown, vestiture yellowish.

Head ( Fig. 36 ) subtrapezoidal, broadest at eyes, HL 0.230 mm, HW 0.200 mm; tempora distinctly shorter than eyes, rounded and moderately convergent postero-mesally; vertex weakly convex; frons subtriangular but with indistinct antero-median projection. Eyes strikingly large and strongly projecting laterally from the head silhouette, coarsely faceted. Punctures on head dorsum distinct and moderately dense but small and shallow, spaces between punctures equal to and wider than puncture diameters; setae short, sparse and suberect. Antennae slender, AnL 0.300 mm; antennomere I elongate, II about as long as broad, III–X transverse; XI slightly elongate.

Pronotum ( Fig. 36 ) in dorsal view subquadrate, broadest near posterior third, PL 0.210 mm, PW 0.230 mm; anterior margin slightly concave, arcuate, lateral margins rounded in anterior half and nearly straight in middle, from lateral setal brush strongly bent postero-mesally; posterior margin shallowly bisinuate; base of pronotum with two pairs of small pits not connected by impression. Punctures on pronotal disc dense but fine and inconspicuous; setae sparse, thin, short and suberect.

Elytra oval, slightly more convex than pronotum, broadest near middle, EL 0.430 mm, EW 0.330 mm, EI 1.310; basal impressions short; elytral apices separately rounded, elongate adsutural area in middle of each elytron slightly flattened, so that suture appears raised. Punctures on elytral disc slightly more distinct than those on pronotum but still fine and inconspicuous; setae short, sparse and suberect. Hind wings well developed, about twice as long as elytra.

Legs moderately long and slender, without modifications.

Aedeagus ( Fig. 60 ) small, AeL 0.100 mm; slender, with two nearly parallel and lightly pigmented but distinct elongated sclerites inside median lobe; each paramere with long apical seta.

Female. Unknown.

Distribution ( Fig. 63 a). NE Australia (N Queensland).

Etymology. Locotypical, after the Massey Creek, near which the holotype specimen was collected.

Figures

FIGURES 20 – 28. Dorsal habitus of holotypes. Microscydmus (Scydmomicrus) australiensis Franz, female (20); M. (Sc.) nasicornis Franz, female (21); M. (Sc.) capitiseboraci sp. n., male (22); M. (Sc.) queenslandicus sp. n., male (23); M. (Sc.) styxianus sp. n., male (24); M. (Sc.) edithensis sp. n., male (25); M. (Sc.) tooloomensis sp. n., male (26); Penicillidmus masseyensis sp. n., male (27); P. unicolor sp. n., male (28).

FIGURES 29 – 37. Body silhouette of holotypes. Microscydmus (Scydmomicrus) australiensis Franz, female (29); M. (Sc.) nasicornis Franz, female (30); M. (Sc.) capitiseboraci sp. n., male (31); M. (Sc.) queenslandicus sp. n., male (32); M. (Sc.) styxianus sp. n., male (33); M. (Sc.) edithensis sp. n., male (34); M. (Sc.) tooloomensis sp. n., male (35); Penicillidmus masseyensis sp. n., male (36); P. unicolor sp. n., male (37).

FIGURES 54 – 61. Aedeagi in ventral views. M. (Sc.) capitiseboraci sp. n. (54); M. (Sc.) queenslandicus sp. n. (55); M. (Sc.) styxianus sp. n. (56); M. (Sc.) edithensis sp. n. (57); M. (Sc.) tooloomensis sp. n. (58 – 59); Penicillidmus masseyensis sp. n. (60); P. unicolor sp. n. (61).

FIGURES 62 – 63. Distribution of Microscydmus (Scydmomicrus subgen. n.) (62) and Penicillidmus gen. n. (63). Microscydmus (Scydmomicrus) australiensis Franz (62 a); M. (Sc.) nasicornis Franz (62 b); M. (Sc.) capitiseboraci sp. n. (2 c); M. (Sc.) queenslandicus sp. n. (62 d); M. (Sc.) styxianus sp. n. (62 e); M. (Sc.) edithensis sp. n. (62 f); M. (Sc.) tooloomensis sp. n. (62 g); Microscydmus (Sc.) sp. (62 h); Penicillidmus masseyensis sp. n. (63 a); P. unicolor sp. n. (63 b); Penicillidmus sp. (63 c).