Protoconnus tunarianus, Jałoszyński, 2018

Jałoszyński, Paweł, 2018, Revision of the Neotropical genus Protoconnus Franz (Coleoptera: Staphylinidae: Scydmaeninae), Zootaxa 4392 (1), pp. 41-82: 73-74

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Protoconnus tunarianus

sp. n.

Protoconnus tunarianus   sp. n.

( Figs 65 View FIGURES 62–67 , 78–79 View FIGURES 76–83 , 101 View FIGURE 101 )

Type material. Holotype: BOLIVIA (Cochabamba Department): ♂, two labels: " BOLIVIA: Cochabamba Dep. / Villa Tunari, Hotel El Puente, / S16°59.02', W65°24.50', 357m / 15-27.XII.2005, rainforest FIT / S.&J. Peck, 05-45", " PROTOCONNUS   / tunarianus   m. / P. JAŁOSZYŃSKI, 2018 / HOLOTYPUS " [red, printed] (cSBP).

Diagnosis. BL 0.80 mm; body moderately stout, elytra 1.50 times as broad as indistinctly transverse pronotum; frons in male between supraantennal tubercles very narrow and slightly impressed; vertex distinctly convex, its posterior margin very weakly convex in its median portion, transition between posterior margin of vertex and tempora angulate but blunt; pronotal base with indistinct pits and distinct groove; lateral pronotal carinae virtually absent; humeral carinae indistinct, rounded; aedeagus in ventral view with basal capsule much shorter than distal region, broadened distad, distal region abruptly delimited from basal capsule, broadly but shallowly constricted in proximal half and with slightly asymmetrical, subtriangular and pointed apex strongly curved ventrad.

Description. Body of male ( Fig. 65 View FIGURES 62–67 ) moderately convex, brown with indistinctly lighter stripe along elytral suture, covered with setae distinctly lighter than cuticle; BL 0.80 mm.

Head broadest at very large, strongly convex and coarsely faceted eyes, HL 0.15 mm, HW 0.20 mm; tempora in lateral view about as long as 1/4 of the longest diameter of eye; vertex distinctly convex, posterior margin weakly rounded, transition between posterior margin of vertex and tempora angulate but blunt; frons between large supraantennal tubercles very narrow, slightly impressed. Punctures on frons and vertex inconspicuous; setae short, sparse and suberect. Antennae slender, AnL 0.38 mm, slightly shorter than half BL, club distinctly delimited; antennomere I 2.5 × as long as broad, II about 1.5 × as long as broad, III–IV and VI–X each slightly to strongly transverse, VI about as long as broad, XI distinctly longer than X, as long as broad.

Pronotum indistinctly transverse, subtrapezoidal, broadest at base; PL 0.23 mm, PW 0.25 mm. Anterior and posterior margins very weakly convex, lateral margins weakly rounded; lateral carinae absent; transverse antebasal groove distinct, pits barely discernible. Punctures on pronotal disc inconspicuous; setae sparse, short, suberect.

Elytra much more convex than pronotum, oval, broadest in front of middle; EL 0.43 mm, EW 0.38 mm, EI 1.13; humeral carinae indistinct and rounded. Punctures and setae similar to those on pronotum.

Legs moderately long and slender, unmodified.

Aedeagus ( Figs 78–79 View FIGURES 76–83 ) slender; AeL 0.15 mm; in ventral view basal capsule slightly longer than half of distal region, distinctly broadened distad; distal region laterally delimited from sides of basal capsule by a rapid narrowing, slender, with shallow constriction in basal half which delimits flame-like apical half with narrow, slightly asymmetrical and pointed apex, in lateral view distal half strongly curved ventrad; in lateral view area above parameral bases forming a massive subtriangular projection; parameres strongly divergent distad, each with one short apical and one even shorter subapical seta.

Female unknown.

Distribution. Central Bolivia ( Fig. 101 View FIGURE 101 ).

Etymology. Locotypical, after the Villa Tunari Municipality.

Remarks. Protoconnus tunarianus   is externally unremarkable and the aedeagus must be examined for identification; the aedeagus has a unique shape, with a very short basal capsule broadened distad, abruptly delimited distal region and asymmetrical, pointed apex strongly curved ventrad.