Yunnella gollkowskii, Bordoni, 2009

Bordoni, A., 2009, New data on Xantholinini from the Oriental Region. XXI. Yunnella gollkowskii nov. sp. from Myanmar and description of the male of Paratesba siamensis BORDONI (Coleoptera: Staphylinidae, Xantholinini) 201. contribution to the knowledge of the Staphylinidae, Linzer biologische Beiträge 41 (2), pp. 1863-1866 : 1864

Yunnella gollkowskii nov.sp. ( Figs 5-7 )

H o l o t y p e 3: Myanmar, Kachin Prov., ca. 20 km N Panwar, 2180 m, 25.43N, 98.23E, M. Langer, S. Naumann & S. Löffler 24.V.2006 (in coll. Bordoni).

D e s c r i p t i o n: Body 12,5 mm long; length from the anterior margin of the head to the posterior margin of elytra: 7 mm. A big species. Body black, antennae and legs brown; posterior margin of the pronotum slightly reddish. Head squared, backwards dilated, with posterior angles strictly rounded. Surface of the head opaque, with wrinkled, irregular punctation, especially on the sides, almost oblong, with more or less very fine and polygonal micro reticulation. Only a very narrow median strip is smooth. Pronotum massive, anteriorly dilated, with sub rectilinear sides and anterior angles well rounded. Surface shiny, with very fine micro punctation, median series of two anterior punctures and one puncture near the anterior angles. Elytra large, longer and wider than pronotum, backwards dilated, with well rounded and distinct humeri. Surface shiny but irregular, with some series of very superficial punctures. Abdomen with very fine and dense transversal micro striation and fine punctation on the sides.

Tergite and sternite of the male genital segment as in figs. 5-6. Aedeagus (fig. 7). very big (1,77 mm long), sub spherical, with symmetrical and peculiar parameres, covered on the external margin by distinct pubescence; internal sac very short and narrow, with few micro scales in the proximal portion.

D i s t r i b u t i o n: This species is known to me only from the type locality.

E t y m o l o g y: Dedicated to Volker Gollkowski that sent me this species in study.

Notes: This specie is very closely related to Yunnella spinosa BORDONI 2003 from Shaanxi (BORDONI, 2003), but differs by the larger size of the body, squared head, deep irregular punctation of the head, different punctation of the pronotum, structure of the tergite of the male genital segment, aedeagus more large (1,14 mm long in Y. spinosa ), with very peculiar parameres, without long spinules at the posterior apices.

The new species differs also from Y. hayashii BORDONI 2002 (currently know only for a female specimen) from Yunnan by the same characters, the coloration of the elytra (largely brown in Y. hayashii ), and different punctation of the elytra.

It is the first record of Yunnella in Myanmar, at the borderline of Yunnan.

The species of the genus Yunnella so far known are the following: Y. hayashii BORDONI from Yunnan, Y. bhutanica BORDONI 2003 from Bhutan ( BORDONI 2003a) and Y. spinosa BORDONI from Shaanxi.

Figures

Figs 1-7: Paratesba siamensis BORDONI: (1) labrum, (2) tergite of the male genital segment, (3) sternite of the same, (4) aedeagus. Yunnella gollkowskii nov.sp.: (5) tergite of the male genital segment, (6) sternite of the same, (7) aedeagus (scale: 0.1 mm).