Tetartopeus vomer, 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 : 1067-1071

Tetartopeus vomer nov.sp. ( Figs 7-12 )

T y p e m a t e r i a l: Holotype: "TR [5] - Kastamonu, 48 km SW Kastamonu, S Araç, 41°08'13''N, 33°18'52''E, 1490 m, 24.III.2010, V. Assing / Holotypus Tetartopeus vomer 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.

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D e s c r i p t i o n: Body length 7.2 mm. Habitus as in Fig. 7 . Coloration: head, pronotum, and abdomen black; elytra distinctly bicoloured, with the anterior 2/5 black and the posterior 3/5 reddish; legs reddish-yellow; antennae brown, with antennomeres I-II and X-XI reddish.

Head 1.1 times as long as wide ( Fig. 8 ); postocular portion smoothly convex, posterior angles obsolete; punctation moderately coarse, irregularly spaced, in median dorsal portion sparser than in lateral portions; median dorsal surface without microsculpture, lateral and posterior portions with shallow microsculpture. Eyes relatively small ( Fig. 10 ), little more than 1/3 as long as postocular region from posterior margin of eye to neck in dorsal view. Antenna slender, 2.25 mm long; antennomere IV almost 3 times as long as wide; X almost twice as long as wide ( Fig. 9 ).

Pronotum 1.23 times as long as wide and approximately 1.13 times as wide as head; punctation similar to that of head, but denser; interstices shiny and without microsculpture, on average narrower than diameter of punctures; midline rather narrowly impunctate ( Fig. 8 ).

Elytra relatively short, 0.73 times as long and 1.12 times as wide as pronotum ( Fig. 8 ), width 0.98 mm; punctation rather dense and well-defined, somewhat shallower 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 weakly produced in the middle; posterior margin of 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. 6 ); aedeagus 1.3 mm long, ventral process apically hooked and of distinctive shape in lateral view ( Figs 11-12 ).

: unknown.

C o m p a r a t i v e n o t e s: The ventral process of the aedeagus is of somewhat similar shape as that of T. inexcisus , but differs in being more slender in basal half, subapically distinctly bent, and apically curved in lateral view ( T. inexcisus : ventral process stouter and straight, subapically more abruptly narrowed, apically obliquely truncate). In addition, the posterior male sternite VIII of T. inexcisus is slightly more concave and lacks the median incision. Externally, T. vomer is distinguished from T. inexcisus by shorter and more slender elytra ( T. inexcisus : 0.8 times as long and approximately 1.2 times as wide as pronotum; width 1.05 mm). From other congeners, T. vomer is readily distinguished by the shape of the ventral process of the aedeagus and from other species recorded from northern Turkey additionally as follows:

from T. unguis by the different coloration of the elytra, the denser punctation of the head and pronotum, and by the broader and less oblong pronotum;

from T. stylifer by the different coloration ( T. stylifer : segments VIII-X of abdomen reddish) and the smaller eyes ( T. stylifer : eyes approximately half as long as postocular region);

from T. czwalinai by the different coloration ( T. czwalinai : elytra anteriorly less extensively infuscate) and the distinctly shorter and more slender elytra.

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

C o m m e n t: Despite the rather similar shapes of the aedeagi of T. vomer and T. inexcisus , they are hypothesized to represent different species. Firstly, additional differences were found (see above). Secondly, interspecific variation of the shape of the ventral process is often weakly pronounced in the genus, for instance in T. terminatus (GRAVENHORST 1802) , T. rufonitidus (REITTER 1909) , T. quadratus (PAYKULL 1789) , and T. paeneinsularum BORDONI 1982 . Finally, the shape of the ventral process is usually constant and subject to very little intraspecific variation (exception: T. adanensis ). Nevertheless, more material would be needed to confirm the status of T. vomer and T. inexcisus .

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 southwest of Kastamonu, Kastamonu province, northern Turkey. The holotype was collected from under a stone at the margin of a pasture near a stream at an altitude of 1490 m.

Key to the Tetartopeus species of Turkey

The references to illustrations in the literature are abbreviated as follows: AN09 = ANLAù (2009); AS 04 = ASSING (2004); AS 08 = ASSING (2008); AS 09a = ASSING (2009a); AS 09b = ASSING (2009b).

1. Elytra blackish, postero-lateral angles usually with more or less distinct yellowish spot.: posterior margin of tergite VIII rather deeply incised in the middle ( Fig. 16 ); aedeagus as in Figs 17-18 .: posterior margin of tergite VIII strongly produced in the middle ( Fig. 19 ); sternite VIII elongated, posterior margin concave in the middle ( Fig. 20 ). Presence in Turkey likely, but not confirmed ................[ T. paeneinsularum BORDONI ]

- Elytra reddish, anteriorly usually more or less extensively blackish.: posterior margin of sternite VIII at most with small median incision (e.g., Figs 4, 6 ); aedeagus of completely different morphology.: posterior margin of tergite VIII not strongly produced; sternite VIII of different shape...........................................................................2

2. Apex of abdomen (segments VIII-X) reddish.....................................................................3

- Abdomen uniformly blackish; apex at most indistinctly paler............................................6

3. Ventral process of aedeagus apically spear-shaped, very acute, and dorsally with acute process ( AS 04: Figs 43, 48)................................................................................................4

- Ventral process of different shape.......................................................................................5

4. Apex of ventral process of aedeagus very long and acute, more oblique ( AS 04: Figs 47-48). Widespread: Iran, Iraq, Georgia, Ukraine, southern Russia; Turkey: Erzurum and Tunceli provinces ........................................................................... T. stylifer (REITTER)

- Apex of ventral process of aedeagus shorter, almost forming angle of 90° with longitudinal axis of ventral process ( AS 04: Figs 41-45). Central southern Turkey: Adana, Osmaniye, Gaziantep ............................................................... T. adanensis ASSING

5. Ventral process aedeagus sickle-shaped, apically without dorsal process ( AS 08: Fig. 39). Widespread: Iran, Iraq; Turkey: ùanliurfa .................................... T. persicus COIFFAIT

- Ventral process of aedeagus not sickle-shaped, apically with fine dorsal process (AN09: Figs 11-13 ). Central southern Turkey: Adıyaman ........................ T. tezcani ANLAù

6. Elytra anteriorly very narrowly infuscate. Ventral process of aedeagus apically hookshaped ( Figs 5 , 14 ). Turkey: Kastamonu ................................................... T. unguis nov.sp.

- Elytra anteriorly broadly blackish. Ventral process of aedeagus of different shape...........7

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7. Ventral process of aedeagus apically without small dorsal process ( AS 09a: 129-131). Turkey: Izmir ................................................................................ T. czwalinai (JAKOBSON)

- Ventral process of aedeagus apically with small dorsal process.........................................8

8. Elytra shorter, approximately 0.75 times as long as pronotum ( Fig. 8 ).: posterior margin of sternite VIII with small median incision ( Fig. 6 ); ventral process of aedeagus basally more slender, subapically bent and apically rounded in lateral view ( Figs 11- 12 ). Turkey: Kastamonu ............................................................................. T. vomer nov.sp.

- Elytra longer, more than 0.8 times as long as pronotum ( AS 09b: Fig. 25).: posterior margin of sternite VIII without median incision ( AS 09b: Fig. 26); ventral process of aedeagus basally stouter, straight and apically obliquely truncate (As09b: Figs 26-27). Turkey: Kastamonu ............................................................................... T. inexcisus ASSING

Acknowledgements

I am indebted to Benedikt Feldmann, Münster, for proof-reading the manuscript.

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Zusammenfassung

Tetartopeus unguis nov.sp. und T. vomer nov.sp. (beide aus Kastamonu, Norddtürkei) werden beschrieben, abgebildet und mit anderen aus der Nordtürkei nachgewiesenen Tetartopeus -Arten verglichen. Die Geschlechtsmerkmale von T. paeneinsularum BORDONI werden abgebildet. Eine Bestimmungstabelle der türkischen Tetartopeus -Arten wird erstellt.

References

ANLAù A. (2009): On the genus Tetartopeus CZWALINA, 1888 of Turkey. A new species and additional records ( Coleoptera : Staphylinidae : Paederinae ). — Zootaxa 2031: 63-67.

ASSING V. (2004): New species and records of Staphylinidae from Turkey III (Insecta: Coleoptera). — Linzer biologische Beiträge 36 (2): 669-733.

ASSING V. (2008): On the taxonomy and zoogeography of some Palaearctic Paederinae and Xantholinini (Coleoptera: Staphylinidae). — Linzer biologische Beiträge 40 (2): 1237- 1294.

ASSING V. (2009 a): On the Staphylinidae of Turkey. VI. Thirteen new species and additional records (Coleoptera). — Koleopterologische Rundschau 79: 117-172.

ASSING V. (2009 b): New species and additional records of Lathrobium and Tetartopeus from the Palaearctic region (Coleoptera: Staphylinidae: Paederinae). — Linzer biologische Beiträge 41 (2): 1269-1283.

ASSING V. (in press): On the Lathrobiina of Taiwan (Coleoptera: Staphylinidae: Paederinae). — Beiträge zur Entomologie, Keltern 60 (2) (2010).

COIFFAIT H. (1982): Coléoptères Staphylinidae de la région paléarctique occidentale. IV. Sous famille Paederinae. Tribu Paederini 1 (Paederi, Lathrobii). — Nouvelle Revue d´Entomologie, Supplément 12 (4): 1-440.

FELDMANN B. (2010): A new species of Tetartopeus from Israel (Coleoptera: Staphylinidae: Paederinae). — Linzer biologische Beiträge 42 (1): 617-620.

HORION A. (1965): Faunistik der Mitteleuropäischen Käfer, Bd. X: Staphylinidae, 2. Teil, Paederinae bis Staphylininae. — Überlingen, Bodensee: 335 pp.

SMETANA A. (2004): Subfamily Paederinae FLEMING, 1821. — In: LÖBL I. & A. SMETANA (eds), Catalogue of Palaearctic Coleoptera. Volume 2. Hydrophiloidea – Histeroidea – Staphylinoidea. — Apollo Books, Stenstrup: 579-624.

Author´s address: Dr. Volker ASSING

Gabelsbergerstr. 2

D-30163 Hannover, Germany

E-mail: [e-mail]

Figures

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.

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 16-20: Tetartopeus paeneinsularum BORDONI from Greece: (16) male sternite VIII; (17-18) aedeagus in lateral and in ventral view; (19) female tergite VIII; (20) female sternite VIII. Scale bars: 0.5 mm.