Sagola opercularis, Broun, 1915

Park, J. - S. & Carlton, C. E., 2014, A revision of the New Zealand species of the genus Sagola Sharp (Coleoptera: Staphylinidae: Pselaphinae: Faronitae), The Coleopterists Bulletin (mo 13) 68, pp. 1-156 : 152

31. opercularis species-group

(1 species)

Diagnosis. The single member of the opercularis species-group can be distinguished from other Sagola species by the following combination of characters: body length 2.1 mm; antennomere 1 approximately 1.5 times longer than wide; anterior frontal fovea small, round, posterior frontal fovea elongate; frontal sulcus reaching to hind point of eye ( Fig. 77a ); eye large and prominent, approximately as long as temple ( Fig. 77a–b ); ventral surface of male head with W-shaped process bearing dense setae behind process ( Fig. 77b : arrow); elytra longer than wide ( Fig. 77a ), hind wings well-developed; abdominal tergites IV–VI with discal carinae; median lobe of male genitalia curved laterally, C-shaped ( Fig. 77c–d ); known from South Island ( Fig. 78 ).

Figures

Fig. 77. Sagola opercularis (opercularis species-group). a) Habitus, dorsal view, b) Ventral surface of male head (arrow indicates W-shaped process bearing dense setae), c) Aedeagus, dorsal view, d) Aedeagus, lateral view. Scale bar a = 1 mm, b = 0.5, c–d = 0.1 mm.

Fig. 78 Known collection localities of New Zealand Sagola species. S. genalis: black circles; S. flemingensis: triangle; S. snaresensis: black square; S. opercularis: star.