Alevonota hetzeli, Assing, 2019

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, Aleocharinae), Linzer biologische Beiträge 51 (1), pp. 235-246 : 240-244

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

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 2019̎ (cAss).

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. 6 . 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. 7 ) 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. 8 ) 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. 7 ) 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. 7 ) 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 9-10 ) 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 .

Figures

Figs 1-10: Alevonota calliceroides (1-5) and A. hetzeli (6-10): (1, 6) habitus; (2, 7) forebody; (3, 8) antenna; (4-5, 9-10) median lobe of aedeagus in lateral and in ventral view. Scale bars: 1, 6: 1.0 mm; 2-3, 7-8: 0.5 mm; 4-5, 9-10: 0.2 mm.