Lobrathium smetanai, Assing, 2010

Assing, Volker, 2010, On the Lathrobiina of Taiwan (Coleoptera: Staphylinidae: Paederinae), Beiträge Zur Entomologie = Contributions to Entomology 60 (2), pp. 301-361 : 345-346

Lobrathium smetanai sp. n. ( Figs 172-178 )

Type material:

Holotype ♂: " Taiwan, Kaohsiung Hsien, Peinantashan trail, 2000 m, 7.VII.93, A. Smetana [ T144 ] / Holotypus ♂ Lobrathium smetanaismetanai sp. n., det. V. Assing 2010" (cAss) . Paratypes: 1 ♀: " Taiwan, Kaohsiung Hsien, Peinantashan trail, 2020 m, 7.VII.93, A. Smetana [ T143 ]" (cSme) .

Description:

External characters as in L. duplehamatum , except for the somewhat larger eyes and the completely rounded posterior angles of the head ( Figs 172-173 ).

♂: posterior margin of tergite VIII weakly angled in the middle; sternites V-VI without impressions; sternite VII posteriorly with shallow oblong impression in the middle, posterior margin weakly concave; sternite VIII posteriorly with narrow impression along the middle, without pegsetae, posterior excision deep, narrow, and V-shaped ( Fig. 174 ); aedeagus with apical lobes of distinctive shape ( Fig. 176 ).

♀: posterior margin of tergite VIII weakly angled in the middle, not acutely produced ( Fig. 177 ); sternite VIII of similar shape as in L. stimulans , posteriorly produced and distinctly longer than tergite VIII ( Fig. 178 ); lateral sclerites of tergite IX anteriorly broadly separated; tergite X anteriorly very broad and reaching anterior margin of tergite IX, more convex in cross-section, less slender and apically somewhat less acute than in the three preceding species.

Comparative notes:

Based on the morphology of the primary and secondary sexual characters (shape of male sternites VII and VIII, rather massive aedeagus with subapically hooked apical lobes, shape of female sternite VIII), L. smetanaismetanai is closely related to L. stimulans . It is distinguished from the three preceding species of the subgroup by the deeper and distinctly V-shaped posterior excision of the male sternite VIII, the shape of the aedeagus, especially of the apical lobes, as well as by the posteriorly not acutely produced female tergite VIII. From L. stimulansstimulans and L. sororium , it is additionally separated by larger size, darker coloration, and the irregularly serial arrangement of the elytral punctation.

Etymology:

This species is dedicated to Aleš Smetana, who collected not only the types of this species, but the also almost all of the remaining specimens dealt with in this paper.

Distribution and natural history:

The type specimens were collected in the Peinantashan range, Kaohsiung Hsien, southern Taiwan, by sifting leaf litter and other debris in a mature broadleaved forest at an altitude of approximately 2000 m .

Figures

Figs 172-177: Lobrathium smetanai sp. n.: habitus (172); forebody (173); male sternite VIII (174); aedeagus in lateral and in ventral view (175-176); female tergite VIII (177). Scale bars: 172-173: 1.0 mm; 174-177: 0.5 mm.

Figs 178-186: Lobrathium duplehamatum sp. n. (178) and L. furcillatum sp. n. (179-186): female sternite VIII (178, 186); habitus (179); forebody (180); male sternite VII (181); male sternite VIII (182); aedeagus in lateral and in ventral view (183-184); female tergite VIII (185). Scale bars: 179-180: 1.0 mm; 178, 181- 186: 0.5 mm.