Gyrophaena (Gyrophaena) aedugena ENUSHCHENKO, 2011

I. V & A. V, 2011, Contribution to the knowledge of Gyrophaena MANNERHEIM 1830 (Coleoptera: Staphylinidae: Aleocharinae: Gyrophaenina) of the Baikal region, Linzer biologische Beiträge 43 (2), pp. 1199-1217 : 1201-1202

Gyrophaena (Gyrophaena) aedugena ENUSHCHENKO nov.sp. ( Figs 1-3 )

T y p e m a t e r i a l: Holotype: Irkutsk Area: Angarskiy distr., Angarsk , environs of Elovskoe water reservoire, 8.VII.2009, in Daedaleopsis tricolor ( BULL.) BOND. & Sing., leg. I. Enushchenko ( ZMUC).

D e s c r i p t i o n: Measurements of the holotype: LA: 0.601; LH: 0.171; WH: 0.314; LE: 0,086; LT: 0,057; WP: 0.357; LP: 0.228; LEl: 0.285; WE: 0.471; WA: 0.428; LAed: 0.285; TL: 1.285.

Body unicoloured, dark-brown; legs, antennae and mouthparts yellowish-brown. Head moderately transverse, with irregular and indistinct punctation, with weak microsculpture between punctures. Eyes large, 1.5 times longer than temples. Antenna as in Fig. 1 ; antennomere I and II with the same width; antennomere III 3 times narrower than II and IV; antennomere IV weakly transverse; antennomeres V-VIII with the same proportions; antennomere X as long as wide. Length/width of antennomeres are: I: 0.09 × 0.03; II: 0.06 × 0.03; III: 0.04 × 0.01; IV: 0.04 × 0.03; V-VIII: 0.04 × 0.04; IX: 0.06 × 0.04; X: 0.06 × 0.06; XI: 0.09 × 0.06. Pronotum 1,56 times as wide as long; with indistinct microsculpture and small punctures scattered elsewhere. Elytra with fine and sparse punctures, with indistinct microsculpture.

Male. Aedeagus as in Fig. 2 . Posterior margin of tergite VIII ( Fig.3 ) with four thin lateral teeth, medial pair significantly shorter.

Female unknown.

C o m p a r a t i v e n o t e s: Based on body size, colour, arrangement of pronotal punctures and elytral microsculpture, Gyrophaena aedugena is similar to G. manca , from which it can be distinguished by the shapes of antennal segments (4 th segment elongate not transverse and 5-9 segments less transverse as in G. manca ), shape of tergite VIII and the different shape and structure of the aedeagus.

C o m m e n t: Based on the structure of the aedeagus, the new species belongs to the coniciventris species group, which was defined by SEEVERS (1951: 697); species of this group are distributed in North America except for the Palaearctic G. manca .

E t y m o l o g y: The species name (Lat., pers.) is derived from Aedugen (=Otugen), the name of the goddess of the Earth of Alarian Buryat`s.

D i s t r i b u t i o n: Known only from the type locality.

B i o n o m i c s The holotype was collected from Daedaleopsis tricolor (BULL.) BOND. & SING.

Figures

Figs 1-3: Gyrophaena aedugena sp. nov.: (1) antenna; (2) aedeagus, lateral view; (3) tergite VIII. Scale bars: 1: 0.1 mm, 2-3: 0.05 mm.