Deinopteroloma uncinatum, Assing, 2015

Assing, Volker, 2015, Three new species of Deinopteroloma from Vietnam and China (Coleoptera: Staphylinidae: Omaliinae), Linzer biologische Beiträge 47 (2), pp. 1217-1227 : 1218-1223

publication ID	https://doi.org/ 10.5281/zenodo.5415862
persistent identifier	https://treatment.plazi.org/id/DA3087E5-FFF0-FF87-FF46-67E5FC93FDC2
treatment provided by	Marcus
scientific name	Deinopteroloma uncinatum
status	sp. nov.

Treatment

Deinopteroloma uncinatum View in CoL nov.sp. ( Figs 1-3 View Figs 1-8 , 9-11 View Figs 9-18 , 19-20 View Figs 19-25 , 26 View Fig , Map 1 View Map 1 )

T y p e m a t e r i a l: Holotype 3: "N-Vietnam - pass 8 km NW Sa Pa , 22°21'10''N, 103°46'01''E, 2010 m, secondary forest, 5.VIII.2013, V. Assing [7+2] / Holotypus 3 Deinopteroloma uncinatum sp.n. det. V. Assing 2015 " (cAss). GoogleMaps

E t y m o l o g y: The specific epithet (Latin, adjective: hook-shaped) alludes to the shape of the apices of the parameres of the aedeagus.

D e s c r i p t i o n: Body length 5.0 mm; length of forebody 4.5 mm. Coloration: head dark-brown; pronotum brown with broadly dark-yellowish lateral margins; elytra bicoloured, pale yellowish-brown with the posterior third blackish; abdomen brown; legs reddish-brown; antenna with antennomeres I-IV reddish and V-X gradually more infuscate apically, IX-XI blackish; maxillary palpi pale-reddish.

Head ( Fig. 1 View Figs 1-8 ) deeply impressed near eyes, these impressions with coarse and somewhat irregular punctation; median and posterior portions of dorsal surface with three partly interrupted transverse series of coarse punctures situated in narrow impressions; between these impressions with smooth and glossy elevations; frons smooth and glossy, without microsculpture. Antenna 1.8 mm long and shaped as in Fig. 3 View Figs 1-8 .

Pronotum ( Fig. 1 View Figs 1-8 ) 1.6 times as broad as long and 1.6 times as broad as head; lateral margins finely crenulate and with somewhat irregular outline, but without distinct toothlike processes; lateral portions strongly impressed; surface of median portion uneven, with longitudinal and transverse smooth elevations, behind middle with a subcircular smooth elevation; punctation coarse, rather dense in antero-median and postero-median portions, sparser in lateral portions, and very irregular and scattered in median portion.

Elytra ( Fig. 2 View Figs 1-8 ) 2.6 times as long as pronotum and 1.3 times as long as combined width; lateral margins smoothly curved in dorsal view; punctation coarse and arranged in partly irregular series (except in posterior portion of elytra); each elytron with approximately 12-15 rather indistinct smooth tubercles. Legs rather short; metatibia ( Fig. 9 View Figs 9-18 ) 1.2 mm long; protibia weakly bisinuate at inner side; meso- and metatibiae nearly straight.

3: protarsomeres I-IV very weakly dilated; aedeagus ( Figs 10-11 View Figs 9-18 , 19-20 View Figs 19-25 ) 1.1 mm long; both parameres smoothly curved in ventral view and apically conspicuously hookshaped, slighty extending beyond apex of median lobe, left paramere slightly longer than right paramere; internal sac with a series of seven distinctly sclerotized spines.

C o m p a r a t i v e n o t e s: Deinopteroloma uncinatum is distinguished from all its congeners by the distinctive morphology of the aedeagus, particularly by the shapes of the parameres and the internal structures. In addition, it differs from the geographically closest congeners as follows:

from D. semiflavum JANSSON, 1946 (Northeast Burma; male unknown) by larger size ( D. semiflavum : 3.5 mm), different coloration ( D. semiflavum : elytra yellowish with blackish spots; mouthparts brown; legs dark-brown), and the absence of microsculpture on the head;

from D. diabolicum JANSSON, 1946 (Northeast Burma) by much paler coloration, the relatively broader and more transverse pronotum, and the absence of long recurved spines on the lateral margins of the pronotum;

from D. gracile SMETANA, 2001 View in CoL (Shaanxi, Sichuan) by larger body size ( D. gracile View in CoL : 3.2-

3.6 mm), the convex lateral margins of the elytra, and the short subhumeral elytral elevation;

from D. tricuspidatum SMETANA, 1996 (Fujian) View in CoL by much paler coloration and indistinct elytral elevations;

from D. hamatum SMETANA, 1996 (Fujian) View in CoL by larger size ( D. hamatum View in CoL : 3.7-3.9 mm), paler coloration, and weakly pronounced elytral elevations.

For illustrations of the aedeagi of the compared species (except D. semiflavum View in CoL ) see SMETANA (1985, 1996, 2001).

D i s t r i b u t i o n a n d b i o n o m i c s: Theteneralholotypewascollectedata pass to the northwest of Sa Pa, North Vietnam ( Map 1 View Map 1 ), by sifting leaf litter and roots of herbs and ferns at the margin of a secondary deciduous forest at an altitude of 2010 m ( Fig. 26 View Fig ). For an additional photograph see ASSING (2015: figure 12).