Tetartopeus unguis, Assing, 2010

Paederinae), Two new species of Tetartopeus from Turkey (Coleoptera: Staphylinidae:, 2010, Two new species of Tetartopeus from Turkey (Coleoptera: Staphylinidae: Paederinae), Linzer biologische Beiträge 42 (2), pp. 1063-1071 : 1064-1067

Tetartopeus unguis nov.sp. ( Figs 1-5 , 13-15 )

T y p e m a t e r i a l: Holotype: "TR [1] - Kastamonu, 45 km NW Kastamonu, 41°42'05''N, 33°28'17''E, 1090 m, calcareous slope, 22.III.2010, V. Assing / Holotypus Tetartopeus unguis sp. n., det. V. Assing 2010 ".

E t y m o l o g y: The specific epithet (Latin: claw) is a noun in apposition and refers to the shape of the apex of the ventral process of the aedeagus.

D e s c r i p t i o n: Body length 6.9 mm. Habitus as in Fig. 1 . Coloration: head, pronotum, and abdomen black; elytra reddish, with the anterior margins and the scutellar portion narrrowly infuscate; legs reddish-yellow; antennae brown, with antennomeres I- II reddish-yellow.

Head 1.1 times as long as wide ( Fig. 2 ); postocular portion smoothly convex, posterior angles obsolete; punctation moderately coarse, irregularly spaced, in median dorsal portion sparse, in lateral portions somewhat denser; dorsal surface without microsculpture, lateral portions with shallow traces of microsculpture. Eyes relatively small ( Fig. 13 ), little more than 1/3 as long as postocular region from posterior margin of eye to neck in dorsal view. Antenna slender, 2.15 mm long; antennomere IV almost 3 times as long as wide; X more than 1.5 times as long as wide ( Fig. 3 ).

Pronotum 1.28 times as long as wide and approximately 1.05 times as wide as head; punctation similar to that of head, but slightly denser; interstices shiny and without microsculpture, on average approximately as wide as diameter of punctures; midline rather narrowly impunctate ( Fig. 2 ).

Elytra relatively short, 0.75 times as long and 1.15 times as wide as pronotum ( Fig. 2 ), width 0.92 mm; punctation rather dense, much shallower and less defined than that of pronotum; interstices without distinct microsculpture. Hind wings present, but possibly of reduced length.

Abdomen approximately as wide as elytra; punctation very fine and very dense; interstices with distinct fine microsculpture; posterior margin of tergite VII with palisade fringe.

: posterior margin of tergite VIII convexly produced in the middle; posterior margin of

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sternite VIII in posterior 2/3 of median portion with cluster of numerous black setae on either side of middle, posterior margin with very small incision in the middle ( Fig. 4 ); aedeagus 1.2 mm long, with apically hooked ventral process of distinctive shape in lateral view ( Figs 5 , 14 ).

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: unknown.

C o m p a r a t i v e n o t e s: Tetartopeus unguis is distinguished from all its congeners by the distinctive shape of the ventral process of the aedeagus. It is additionally separated from other species recorded from northern Turkey as follows:

from T. stylifer by the different coloration ( T. stylifer : segments VIII-X of abdomen

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reddish), the smaller eyes ( T. stylifer : eyes approximately half as long as postocular region), and the sparser punctation of the head;

from T. inexcisus by the different coloration ( T. inexcisus : elytra anteriorly extensively black, blackish portion almost reaching middle of elytra), the much shorter and more slender elytra ( T. inexcisus : elytra more than 0.8 times as long and approximately 1.2 times as wide as pronotum, width approximately 1.05 mm), the sparser punctation of the head, and the slightly coarser punctation of the elytra;

from T. czwalinai by the different coloration ( T. czwalinai : elytra anteriorly more extensively infuscate), the less slender antennae ( T. czwalinai : preapical antennomeres at least twice as long as broad), and the distinctly shorter and more slender elytra.

For illustrations of the compared species see ANLAù (2009) and ASSING (2004, 2009a, 2009b).

D i s t r i b u t i o n a n d b i o n o m i c s: The type locality is situated to the northwest of Kastamonu, Kastamonu province, northern Turkey. The holotype was collected from under a stone in partly flooded calcareous arable land at an altitude of 1090 m. The type locality is illustrated in Fig. 15

Figures

Figs 1-6: Tetartopeus unguis nov.sp. (1-5) and T. vomer nov.sp. (6): (1) habitus; (2) forebody; (3) antenna; (4, 6) male sternite VIII; (5) aedeagus in lateral view. Scale bars: 1-2: 1.0 mm; 3-6: 0.5 mm.

Figs 7-14: Tetartopeus vomer nov.sp. (7-12) and T. unguis nov.sp. (13-14): (7) habitus; (8) forebody; (9) antenna; (10, 13) head in lateral view; (11) aedeagus in lateral view; (12, 14) apex of ventral process of aedeagus in lateral view. Scale bars: 7-8, 10, 13: 1.0 mm; 9, 11: 0.5 mm; 12, 14: 0.1 mm.

Fig. 15: Type locality of Tetartopeus unguis nov.sp. (photo: Paul Wunderle).