Tetartopeus kamtschaticus ( BERNHAUER 1927)

Assing, V., 2011, On some East Palaearctic Tetartopeus species (Coleoptera: Staphylinidae: Paederinae), Linzer biologische Beiträge 43 (2), pp. 1179-1197 : 1181-1183

Tetartopeus kamtschaticus ( BERNHAUER 1927) ( Figs 1-10 )

Lathrobium kamtschaticum BERNAUER 1927: 94 .

Lathrobium punctatum var. gracile POPPIUS 1909: 22 ; preoccupied; nov.syn.

Lathrobium poppiusi KOCH 1939: 257 ; replacement name for L. gracile POPPIUS ; nov.syn. Tetartopeus kamtshaticus: SMETANA (2004); incorrect subsequent spelling.

T y p e m a t e r i a l e x a m i n e d Lathrobium kamtschaticum : Lectotype, present designation: " Kamtschatka, Bolscherjetsk / 10.VII.1917, Y. Wuorentaus / kamtschaticum Bernh. Typus. / Chicago NHMus, M.Bernhauer Collection / Lectotypus Lathrobium kamtschaticum Bernhauer , desig. V. Assing 2011 / Tetartopeus kamtschaticus (Bernhauer) , det. V. Assing 2011" ( FMNH). A d d i t i o n a l m a t e r i a l e x a m i n e d: Russia:2, Khabarovskiy Kray, 10 km N

Bikin, Boitsovo, Shivki mountain, 47°05'N, 134°18'E, 200 m, 27.V.1993, leg. Zerche (SDEI,

cSch); 1, 20 km N Bikin, 3 km SE Boitsovo , 47°02'N, 134°21'E, 250 m, 26.V.1993, leg. Zerche

(cAss); 1, 1, "Ost-Sibirien / Quellgebiet des Irkut", 1891, leg. Leder (NHMW, cAss).

C o m m e n t: The original description of Lathrobium kamtschaticum is based on an unspecified number (at least two) of syntypes, among them at least one male, collected in "Bolscherjetsk, am 10. Juli 1917 von Y. Wuorentaus" and deposited in the Bernhauer collection and "in der Sammlung des Museums in Helsingfors" ( BERNHAUER 1927). One male syntype was located in the Bernhauer collection. It is designated as the lectotype.

POPPIUS (1909) described Lathrobium gracile as a variety of L. punctatum ZETTERSTEDT (a primary homonym subsequently replaced with L. zetterstedti ), based on several specimens collected in "Ytykhaja", "zwischen der Aldan-Mündung und Batylym", "auf den Werchojansk'ischen Gebirgen", and "in den Umgebungen von Shigansk" under moss in taiga habitats, once also near a mountain stream in July and August. The type material, which is probably deposited in the Zoological Museum, University of Helsinki, was not examined.

KOCH (1939) replaced the primary homonym Lathrobium gracile POPPIUS 1909 with the new name L. poppiusi .

COIFFAIT (1982) provided illustrations of the male and female sexual characters of Tetartopeus poppiusi , based on material collected close to the type locality. Based on these illustrations, the aedeagus of T. poppiusi is identical to that of the lectotype of T. kamtschaticus ; hence the new synonymies proposed above. The elytra of the lectotype are distinctly shorter (0.7 times as long as pronotum) than those of the additional male from Boitsovo (0.95 times as long as pronotum).

D i a g n o s i s: Lengthofforebody 2.7-3.3 mm. Habitus as in Fig. 1 . Body uniformly blackish, elytra without yellowish spots; legs and antennae brown to blackish-brown. Elytra of very variable length, 0.70-0.95 times as long as pronotum.

: tergite VIII and sternite VIII as in Figs 2-4 ; aedeagus approximately 1.2 mm long; ventral process conspicuously long and almost straight in lateral view, somewhat asymmetric and subapically bent in ventral view, apically hooked; dorsal plate apically angular; internal sac with large sclerotized structures of characteristic shape; apical internal structure strongly curved ( Figs 5-8 ).

: tergite VIII ( Fig. 9 ) with pronounced and acute posterior process (similar to condition in T. terminatus ); sternite VIII distinctly oblong, posterior margin produced and in the middle moderately concave ( Fig. 10 ); hemi-tergites IX very long.

D i s t r i b u t i o n: The species is currently known from East Siberia and the Russian Far East.

Figures

Figs 1-10: Tetartopeus kamtschaticus (BERNHAUER) (1-5, 7: lectotype): (1) habitus; (2) male tergite VIII; (3) male sternite VIII; (4) posterior median portion of male sternite VIII; (5-6) aedeagus in lateral view; (7) aedeagus in ventral view; (8) dorsal plate of aedeagus; (9) female tergite VIII; (10) female sternite VIII. Scale bars: 1: 1.0 mm; 2-3, 5-7, 9-10: 0.5 mm; 4, 8: 0.2 mm.