Euconnus (Rhomboconnus) wari, Jałoszyński, 2018

Jałoszyński, Paweł, 2018, Two new species of Euconnus (Rhomboconnus) in Peru and Bolivia (Coleoptera, Staphylinidae, Scydmaeninae), Zootaxa 4375 (4), pp. 588-592 : 589

Euconnus (Rhomboconnus) wari sp. n. ( Figs 1–3 , 7–9 )

Holotype: Peru (Paurcatambo Prov.): ♂, two labels: " PERU: Cusco, Paurcatambo Prov. / Cock of the Rock Lodge, / 13°3'24.9''S, 71°32'43.8''W, 1120 m / 12-16.X.2013, Winkler extr. sifted / cloud for. litter, leg. J. Parker" [white, printed], " EUCONNUS / ( RHOMBOCONNUS ) / wari m. / P. Jałoszyński, '17 / HOLOTYPUS " [red, printed] ( MNHW).

Diagnosis. BL> 2.3 mm; head asetose except for a row of long setae along posterior margin of vertex (in front of tufts of bristles), pronotum and elytra with moderately sparse and long setae; tempora strongly narrowing posteriorly; vertex in lateral view not evenly convex but angulate, its surface distinctly bent near posterior third, in dorsal view the posterior portion of vertex occupied by a distinct impression; pronotum broadest at base; pronotal base with a narrow transverse groove; the longest endophallic sclerite with slanting apical emargination.

Description. Body of male ( Fig. 1 ) strongly convex, elongate, with long and slender appendages, BL 2.43 mm; cuticle glossy, uniformly dark brown, vestiture slightly lighter than cuticle.

Head ( Figs 2–3 ) strongly narrowing posteriorly, broadest at eyes, HL 0.55 mm, HW 0.48 mm; vertex and frons confluent, anterior 2/3 of vertex and frons evenly convex, posterior 1/3 of vertex in lateral view bent posteriorly, vertex with large transverse impression near posterior margin; tempora nearly straight except for short posterior portions which are rapidly bent mesally; supraantennal tubercles barely marked; eyes large, finely faceted and distinctly projecting from silhouette of head. Punctures on vertex and frons very fine and inconspicuous; only several long setae are present near posterior margin of vertex, additionally posterior portion of each temple with a fringe of thick, dense and long bristles. Antennae slender, AnL 1.63 mm; all antennomeres except III elongate, III slightly transverse; antennomeres X–XI distinctly flattened, XI nearly as long as IX–X together, 3 times as long as broad.

Pronotum ( Figs 2–3 ) in dorsal view broadest at base, moderately strongly narrowing anteriorly, PL 0.50 mm, PW 0.58 mm; sides weakly rounded in anterior half and nearly straight in posterior half, anterior margin arcuate and distinctly concave, posterior margin rounded and convex; base with long and narrow transverse groove. Punctures inconspicuous; setae on pronotal disc moderately dense and long, suberect, sides densely covered with thick bristles.

Elytra suboval, broadest distinctly in front of middle, EL 1.38 mm, EW 1.10 mm, EI 1.25; apices separately rounded. Punctures on elytral disc inconspicuous; setae longer and more erect than those on pronotum, moderately dense.

Legs long and slender; protrochanters unmodified.

Aedeagus ( Figs 7–9 ) stout, AeL 0.48 mm, in ventral view drop-shaped with lateral margins gradually convergent toward apex; endophallus with six sclerites ( Fig. 8 ), of which the longest has slanting and emarginate distal margin; parameres not broadened in subapical region, each with three setae.

Female. Unknown.

Distribution. Southern Peru, east of Andes ( Fig. 13 ).

Etymology. The name wari refers to the Wari civilization in the area of modern-day Peru between 500 and 1000 AD.

Remarks. The unusual posterior impression on the vertex is unique for this species.

Figures

FIGURE 13. Distributionof nominal species of Euconnus (Rhomboconnus).

FIGURES 1–6. Dorsal habitus (1, 4), head and prothorax in dorsal (2, 5) and lateral (3, 6) views. Euconnus wari sp. n. (1–3); E. inkachakanus sp.n.(4–6).

FIGURES7–12. Aedeagus inventral(7, 10) andlateral(9, 12) views,andendophallic scleritesin ventralview (8,11). Euconnuswari sp.n. (7–9); E.inkachakanus sp.n. (10–12).