Euconnus (Napochus) setiphallus, Jałoszyński, Paweł, 2015

Jałoszyński, Paweł, 2015, Taxonomy of ' Euconnus complex'. Part III. Morphology of Euconnus subgenus Napochus and revision of the Australian species (Coleoptera, Staphylinidae, Scydmaeninae), Zootaxa 3925 (1), pp. 1-24 : 16

Euconnus (Napochus) setiphallus sp. n.

( Figs. 28 , 41–42, 60)

Type material studied. Holotype: AUSTRALIA (Queensland): ♂, three labels: " 11.45S 142.35E / Heathlands QLD / 21Nov. - 9Dec.1992 / P.Zborowski,W.Dressler / MALAISE #2 dump / open forest" [white, printed], "Aust. Nat. / Ins. Coll." [green, printed], " Euconnus / ( Napochus ) / setiphallus m. / det. P. JAŁOSZYŃSKI, '15" [red, printed] ( ANIC).

Diagnosis. Small species, BL 1.10 mm; aedeagus in ventral view with moderately broad ventral apical projection broadening from base to subapical region and with rounded, subtriangular apex, not reaching apex of dorsal apical projection, internal lateral projections broadly subtriangular and with rounded apices, much shorter than ventral apical projection and not convergent distally; external lateral projections barely discernible, rounded; in lateral view ventral apical projections not curved, and dorsal apical projection only slightly curved dorsally; parameres with apices barely broadened.

Description. Body of male ( Fig. 28 ) strongly convex but with slightly flattened elytral dorsum, elongate, with long appendages, BL 1.10 mm; glossy, uniformly light brown; vestiture slightly lighter than cuticle.

Head rhomboidal, broadest at eyes, HL 0.20 mm, HW 0.24 mm; vertex and frons confluent, convex; supraantennal tubercles feebly marked; eyes large, strongly convex and coarsely faceted. Punctures on vertex and frons distinct but small and shallow; setae long, dense, suberect to erect, additionally tempora and vertex with long and dense bristles directed posteriorly. Antennae short, AnL 0.48 mm; antennomeres I–II elongate, III–VII slightly transverse and VIII–X strongly transverse, antennomere XI slightly broader than long.

Pronotum in dorsal view subtrapezoidal, broadest at base and strongly narrowing anteriorly, PL 0.28 mm, PW 0.29 mm; basal pits distinct, transverse groove barely discernible. Punctures on pronotal disc fine and inconspicuous; setae fine and on sides obscured by dense, long and thick bristles.

Elytra suboval and slightly flattened, broadest near middle, EL 0.63 mm, EW 0.50 mm, EI 1.25; basal impressions shallow but distinct, humeri elongate; apices separately rounded. Punctures on elytral disc fine and shallow; setae long, sparse and strongly erect. Hind wings well-developed, twice as long as elytra.

Legs long and slender; unmodified.

Aedeagus (Figs. 41–42) stout, AeL 0.25 mm, in ventral view with abruptly delimited and long apical part; ventral apical projection narrow at base, gradually broadening distally and in subapical region again narrowing to form broadly subtriangular apex, in ventral view not reaching apex of dorsal apical projection; only dorsal apical projections slightly bent dorsally at an obtuse angle; internal lateral projections broad, subtriangular and rounded at apices; external lateral projections short, broad and rounded. Parameres moderately broad, in lateral view with barely broadened apical parts, each with 3 long apical setae; short setae are also distributed along median subapical region of dorsal aedeagal wall.

Female. Unknown or indistinguishable from similar species (see discussion).

Distribution. N Queensland ( Fig. 60 ).

Etymology. The name setiphallus refers to the group of tiny setae located in the subapical region of the dorsal aedeagal wall.

Figures

FIGURES 24 – 34. Napochus of Australia; dorsal habitus (24 – 25, 28 – 34) and original labels of holotypes (26 – 27). Euconnus palmwoodianus (Franz) (24, 26), E. pisoniae Franz (25, 27), E. setiphallus sp. n. (28), E. yadhaigana sp. n. (29), E. microlaminatus sp. n. (30), E. feeneyi feeneyi sp. n. (31, 32), E. feeneyi parallelilaminatus ssp. n. (33, 34).

FIGURES 57 – 64. Distribution of Napochus in Australia. Euconnus palmwoodianus (Franz) (57, 58), E. pisoniae Franz (59), E. setiphallus sp. n. (60), E. yadhaigana sp. n. (61), E. microlaminatus sp. n. (62), E. feeneyi feeneyi sp. n. (63), E. feeneyi parallelilaminatus ssp. n. (64).