Pseudobium hellenicum, Assing, 2006

Assing, V., 2006, New species and records of Pseudobium MULSANT & REY (Insecta: Coleoptera: Staphylinidae: Paederinae), Linzer biologische Beiträge 38 (1), pp. 385-391 : 387-389

publication ID

https://doi.org/ 10.5281/zenodo.5433297

DOI

https://doi.org/10.5281/zenodo.5488587

persistent identifier

https://treatment.plazi.org/id/B9718792-FF9A-CE27-FF6D-FC63FBCC000C

treatment provided by

Valdenar

scientific name

Pseudobium hellenicum
status

sp. nov.

Pseudobium hellenicum View in CoL sp.n. ( Figs 1-10 View Figs 1-10 )

Holotype Ƌ: GR. Fokis, 640 m, 13, 25 km SW Lamia, Stromi, river bank, 38°41'24N, 22°12'54E, 06.IV.2001, V. Assing GoogleMaps / Holotypus Ƌ Pseudobium hellenicum sp. n. det. V. Assing 2005 (cAss). Paratypes: 2♀♀: GR. Fthiotis, 470 m, 9, 38°49'31N, 22°04'58E, SW Samia, Inachos river bank, 05.IV.2001, Assing & Wunderle (cAss, cWun).

D e s c r i p t i o n: Measurements (in mm) and ratios (range; n=3): AL: 1.37-1.45; HL: 0.60-0.63; HW: 0.45-0.51; PW: 0.39-0.45; PL: 0.63-0.69; EL: 0.71-0.76; EW: 0.56- 0.63; AW: 0.50-0.57; TiL: 0.47-0.50; TaL: 0.33-0.35; ML: 0.42; TL: 4.3-5.0; HL/HW: 1.24-1.33; PW /HW: 0.85-0.91; PW / PL: 0.62-0.65; EL/ PL: 1.09-1.12; EW/ PW: 1.37- 1.45; AW/EW: 0.89-0.90; TiL/TaL: 1.41-1.50.

Relatively small species; habitus as in Fig. 1 View Figs 1-10 . Coloration: body blackish, with the posterior 1/4-1/5 of the elytra and the posterior 2/3 of the elytral suture yellowish to reddish yellow; legs with tibiae and tarsi yellowish to reddish yellow, and with the femora dark brown; antennae rufous to reddish brown.

Head distinctly oblong ( Fig. 2 View Figs 1-10 ), of quadrangular shape, lateral margins subparallel, posterior angles relatively well-marked; puncturation rather coarse and well-delimited, interstices in central dorsal area on average approximately twice as wide as diameter of punctures; microsculpture absent; eyes large and projecting from lateral outline of head ( Figs 2, 4 View Figs 1-10 ), approximately half the length of postocular region in dorsal view; antenna as in Fig. 3 View Figs 1-10 .

Pronotum narrower than head and subparallel ( Fig. 2 View Figs 1-10 ); dorsal rows composed of 15-20 punctures; microsculpture absent.

Elytra distinctly wider and at suture longer than pronotum; punctures of similar size as those of pronotum and arranged in distinct rows. Hind wings fully developed.

Abdomen narrower than elytra, widest at segment VII; puncturation of tergites III-VI coarse and rather dense, with the interstices on average narrower than diameter of punctures; puncturation of tergites VII and VIII sparser and shallower, with the interstices wider than diameter of punctures; tergites III-VI in anterior transverse impressions with pronounced microreticulation and in posterior area without or with indistinct microsculpture; tergites VII-VIII with distinct microsculpture; posterior margin of tergite VII with palisade fringe.

Ƌ: sternite VII with weakly concave posterior margin, pubescence unmodified ( Fig. 5 View Figs 1-10 ); sternite VIII as in Fig. 6 View Figs 1-10 ; aedeagus of highly distinctive shape ( Figs 7-10 View Figs 1-10 ).

E t y m o l o g y: The name (Lat., adj.) refers to the fact that the species has become known only from Greece.

C o m p a r a t i v e n o t e s: Pseudobium hellenicum is most similar and – as can be inferred from the similarly highly derived morphology of the aedeagus – also most closely related to P. cypriacum . From this species, it is best distinguished by the different morphology of the aedeagus and additionally by the more distinctly quadrangular shape of the head (i. e. the more pronounced posterior angles), the less extensive yellowish margination of the elytra, as well as by the coarser puncturation of tergites III-VI. For illustrations of the aedeagus of P. cypriacum , as well as those of other Pseudobium species see COIFFAIT (1982).

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 localities are situated in the southeast of mainland Greece, where the type specimens were collected by washing river banks.

V

Royal British Columbia Museum - Herbarium

PW

Paleontological Collections

PL

Západoceské muzeum v Plzni

ML

Musee de Lectoure

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Pseudobium

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