Wow assingi Jaloszynski, Maruyama & Klimaszewski 2023, sp. n.
Creators: name: Jałoszyński, Paweł
name: Maruyama, Munetoshi
name: Klimaszewski, Jan
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Wow
Wow assingi

description: Wow assingi Jałoszyński, Maruyama & Klimaszewski, sp. n.
(Figs 1–28)
Type material. Holotype: China (Yunnan): ♁, two labels: “ CHINA: Yunnan 690 m / 21.6306 / 101.5890 / Wangtianshu/ rainforest edge, at light / 24 V 2015, leg. M. Wanat ” [white, printed], “ WOW assingi / Jałoszyński, Maruyama / & Klimaszewski, 2023 / HOLOTYPUS” [red, printed] (MNHW).
Diagnosis. As for genus; vide supra.
Description. Body of male (Fig. 1) strongly flattened and slender, umbra brown except for lighter appendages (but antennal flagella infuscate from distal half of antennomere 3) and posterior margin of abdominal tergite VII; cuticle matt on head, pronotum and elytra, weakly glossy on abdomen; setae slightly lighter than cuticle. BL 4.58 mm.
Head (Figs 1–5) broadly subtrapezoidal, almost as broad as pronotum, broadest at eyes, HL 0.58 mm, HW 0.98 mm. Eyes large and strongly convex, finely faceted, strongly elongate oval, in lateral view each with dorsal margin weakly convex and ventral margin strongly convex. Clypeus weakly convex; anterior tentorial pits minute but sharply marked; frons forming subtriangular median elevation broadening posteriorly, where it is confluent with impressed vertex; broad areas adjacent to dorsomesal margins of eyes slightly impressed; supraantennal tubercles broadly rounded posteriorly. Labrum and dorsal surface of mandibles largely microreticulate; clypeolabral connecting membrane smooth, clypeus, frons and vertex distinctly microreticulate, also ventral surface of head, including submentum, mentum, and proximal regions of maxillae microreticulate, ventral surface of mandibles smooth. Vertex and frons virtually impunctate, short and sparse recumbent setae present only on vertex, also genae and postgenae sparsely setose.
Antennae (Fig. 1) slender, AnL 3.85 mm. Scape nearly 10 times as long as broad, clavate, broadest near distal third; pedicel only 1/4 as long as scape and distinctly narrower, about 2.5 × as long as broad; antennomere 3 conspicuously elongate, six times as long as broad and broadening distally; antennomere 4 much shorter than 3, about 3 × as long as broad, 5‒10 subequal in length and width, each slightly shorter than 4 and about 2.5 × as long as broad; antennomere 11 slightly shorter than 9 and 10 combined but much longer than 10, 3.75 × as long as broad, with blunt subtriangular apex. All antennomeres densely covered with fine matt microreticulation (Fig. 4) and moderately dense, short, recumbent to suberect setae.
Pronotum (Fig 4) sub-pentagonal, broadest between middle and anterior third, slightly transverse; PL 0.88 mm, PW 1.00 mm. Anterior pronotal margin weakly arcuate at middle and barely discernibly concave laterally; anterior pronotal corners weakly marked, obtuse-angled and blunt; lateral margins rounded in anterior third and weakly concave in posterior third; posterior corners obtuse-angled and blunt; posterior margin strongly arcuate with minute median flattening. Entire pronotal disc finely microreticulate and virtually impunctate; setae short, dense and nearly recumbent. Hypomera and prosternum finely microreticulate, impunctate and sparsely setose.
Elytra (Fig. 12) broadest shortly in front of posterior corners; EL 0.88 mm, EW 1.23 mm. Base of each elytron with oblique ridge demarcating disc from basal articulating lobe; humeri obtuse-angled and not bulging, lateral elytral margins straight and diverging posteriorly, posterior elytral margins straight and together slightly concave, posterolateral elytral corners blunt and nearly right-angled, posterolateral elytral emargination to receive paratergite absent; adsutural posterior corners obtuse-angled and blunt, elytral suture accentuated by very fine adsutural groove on each elytron. Elytral disc virtually impunctate, covered with setae similarly long, dense and nearly recumbent as those on pronotum.
Hind wings long and functional.
Mesoscutellar shield largely exposed between elytral bases, about as broad as half width of one elytral base, covered with short, dense and recumbent setae directed largely posteriorly.
Legs moderately long, slender, lacking peculiar modifications; pro- and metatibiae nearly straight, mesotibiae indistinctly curved inwards; protarsi shortest and metatarsi longest, protarsomere 1 slightly longer than 2, 2 and 3 subequal in length, protarsomere 4 slightly shorter than 1‒3 combined; mesotarsomere 1 nearly as long as 2 and 3 combined, 2 indistinctly longer than 3, mesotarsomere 4 about as long as 2 and 3 combined; metatarsomere 1 as long as 2, 3 and 1/3 of 3, tarsomere 2 slightly longer than 3, metatarsomere 4 about as long as 2 and 3 combined.
Abdomen (Figs 1, 16‒18) clearly narrower than elytra at base, indistinctly shorter than head, pronotum and elytra combined; AbL 2.25 mm, AbW 0.95 mm. Surface of tergites slightly glossier than that of remaining dorsal structures but also virtually impunctate, tergites and sternites densely covered with short and nearly recumbent setae and additionally each segment bears transverse row of long setae along posterior margin. Tergite VIII (Fig. 24) with shallowly and broadly emarginate posterior margin and with several long posterolateral setae; sternite VIII (Fig. 25) with posterior half subtriangular, sides weakly concave, apex narrowly rounded, posterior margin with several long setae.
Aedeagus (Figs 19–22) slender; AeL 0.90 mm; median lobe with bulbous proximal region elongate and in parameral view (Fig. 19) gradually confluent with distal tubular region, base with elongate median bulge on parameral side, apex of median lobe subtriangular with sinuate sides, apical region curved in abparameral direction, ostium distant from apex of median lobe; endophallic structures weakly sclerotized, nearly symmetrical, flagellum indiscernible. Parameres (Fig. 23) broad and massive, paramerite 3.5 × as long as broad, with narrow velar region and broad, subtriangular and apically rounded apical lobe bearing 4 apical setae (in Fig. 23 two setae are broken off).
Female. Unknown.
Distribution. Central-southern Yunnan, China.
Etymology. This species is dedicated to our friend, Volker Assing, who recently and prematurely passed away. He was a renowned specialist on mainly Palaearctic Staphylinidae, including Aleocharinae.
Remarks. The holotype of this species was collected at night, on a screen illuminated with white light, between a disturbed rainforest and a plantation of rubber trees (Figs 27, 28).
description: Published as part of Jałoszyński, Paweł, Maruyama, Munetoshi & Klimaszewski, Jan, 2023, Wow assingi gen. and spec. n., with description of a new tribe of Aleocharinae (Coleoptera, Staphylinidae), pp. 573-586 in Zootaxa 5357 (4) on pages 580-582, DOI: 10.11646/zootaxa.5357.4.5, http://zenodo.org/record/10064893