Gyrophaena (Gyrophaena) tripartita Cameron, 1939

Enuschenko, Ilya V. & Shavrin, Alexey V., 2021, On some species of Gyrophaenina Kraatz 1856 of Sri Lanka and India (Coleoptera: Staphylinidae: Aleocharinae: Homalotini), Zootaxa 5032 (3), pp. 331-356 : 351

Gyrophaena (Gyrophaena) tripartita Cameron, 1939

( Figs 83–87 )

Gyrophaena tripartita Cameron, 1939: 116

Gyrophaena annapurnensis Pace, 2006: 354 syn. nov.

Type material examined: Syntype of Gyrophaena tripartita Cameron 1939 , ♂ [dissected; original labels as in Fig. 87 ]: ‘Ghum distr. Lepchajagat v-vi-1931 Dr. Cameron’, ‘ G. tripartita ’, ‘SYN- TYPE’, ‘M. Cameron. Bequest. B.M. 1955–147.’, ‘Investigated by Enushchenko I. V. 2019 ’ ( BMNH).

Distribution. India (West Bengal), Nepal.

Remarks. Habitus as in Fig. 83 . The general shape of the aedeagus as that in species of the laetula group, established by Seevers (1951). Median lobe of aedeagus moderately narrow; dorsal projection very short, narrow strongly curved towards significantly longer ventral plate, with widely rounded middle margin and curved apical portion with very narrow apical part and very long, narrow apical protrusion ( Fig. 84 ). Abdominal tergite VII with two wide, oval median tubercles obliquely directed towards each other, and with two pairs of longer lateral elevations. Apical margin of abdominal tergite VIII with three long and narrow teeth of about equal length: two slightly curved lateral and one straight median tooth ( Fig. 85 ), with additional very small protrusions between them. Apical margin of abdominal sternite VIII rounded ( Fig. 86 ).

Female unknown.

Pace (2006) described G. annapurnensis based on two males from Nepal (‘Annapurna South Himal…’) and compared it with the Himalayan G. minuta Cameron, 1939 . The structure of the aedeagus and apical margin of the male abdominal tergite VIII are identical with these structures in G. tripartita (compare Figs 84–85 and figs 27, 29 in Pace (2006)). Thus, G. annapurnensis was synonymized with the latter species.

Figures

FIGURES 83–87. Gyrophaena tripartita (syntype): 83–habitus, 84–aedeagus, lateral view, 85–male abdominal tergite VIII, dorsal view, 86–male abdominal sternite VIII, ventral view, 87–original type labels. Scale bars: 1.0 mm (Fig. 83), 0.10 mm (Figs 84–86).