Alevonota hetzeli

Assing, Volker, 2019, A revision of the Alevonota species of the Palaearctic region. III Two new species Irom Taiwan, a new combination, a new synonymy, and additional records (Coleoptera, Staphylinidae, Aleocharin, Linzer biologische Beiträge 51 (1), pp. 235-246: 240-244

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Alevonota hetzeli


Alevonota hetzeli  nov.sp. ( Figs 6-10View Figs 1-10)

T y p e m a t e r i a l: Holotype ♂: ̎ TAIWAN, Hualien, Guanyuan, pine forest, sifted, 2459 m, 24°11'22''N, 121°20'22''E, 1.VIII.2018, Hetzel leg. / Holotypus ♂ Alevonota hetzeli  sp. n. det. V. Assing 2019 ̎ (cAss).GoogleMaps 

E t y m o l o g y: This species is dedicated to Andreas Hetzel (Hildesheim), who collected the type material of both A. calliceroides  and A. hetzeli  .

D e s c r i p t i o n: Body length 3.9 mm; length of forebody 1.8 mm. Habitus as in Fig. 6View Figs 1-10. Coloration: head black; pronotum blackish-brown; elytra dark-brown; abdomen blackish-brown with the posterior margins of tergites III-VII and the posterior portion of tergite VIII reddish-brown; legs yellowish-brown; antennae blackish.

Head ( Fig. 7View Figs 1-10) 1.1 times as broad as long, broadest across eyes; lateral contours between eyes and posterior constriction of head weakly convex, i.e., posterior angles completely obsolete; dorsal surface with fine and moderately sparse punctation, narrowly impunctate along middle; interstices with distinct microreticulation.

Eyes large and bulging, approximately as long as distance from posterior margin of eye to posterior constriction of head in dorsal view. Antenna ( Fig. 8View Figs 1-10) 1.2 mm long; antennomeres IV transverse, but less than 1.5 times as broad as long, V-IX weakly transverse, X nearly as long as broad, and XI elongate, slightly longer than the combined length of IX and X.

Pronotum ( Fig. 7View Figs 1-10) as broad as long and 1.1 times as broad as head, broadest approximately in the middle; lateral margins weakly convex in dorsal view; pubescence of midline directed posteriad; punctation similar to that of head, but slightly denser; interstices with distinct microreticulation.

Elytra ( Fig. 7View Figs 1-10) approximately as long as pronotum; punctation dense and fine, but more distinct than that of head and pronotum; interstices with microreticulation. Hind wings fully developed.

Abdomen narrower than elytra; tergites III-V with rather deep anterior impressions; punctation moderately sparse and fine, but distinct; interstices with distinct microsculpture predominantly composed of short transverse meshes; posterior margin of tergite VII with palisade fringe.

♂: posterior margins of tergite VIII and sternite VIII strongly convex; median lobe of aedeagus ( Figs 9-10View Figs 1-10) 0.39 mm long and slender.

♀: unknown.

C o m p a r a t i v e n o t e s: Alevonota hetzeli  is readily distinguished from A. calliceroides  and A. taiwanensis by much smaller, and from A. laevigata PACE, 2009 ( Taiwan: Taichung) by distinctly larger body size alone. It differs from the two similarly sized A. taiwanica  and A. longicornis  PACE, 2009 as follows:

from A. taiwanica  (male unknown) by much more bulging eyes, distinctly less transverse antennomeres IV-X, and a differently shaped head ( A. taiwanica  : lateral contours behind eyes somewhat parallel for some distance);

from A. longicornis  by distinctly transverse antennomeres IV ( A. longicornis  : antenno-

meres IV approximately as long as broad), larger and more convex eyes, and by the shape of the aedeagus.

For illustrations of A. taiwanica  and A. longicornis  see PACE (2009).

D i s t r i b u t i o n: The type locality and the circumstances of collection are identical to those of A. calliceroides  .