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).