10. helmorei species-group

(2 species)

Diagnosis. Members of the helmorei speciesgroup can be distinguished from other Sagola species-groups by the following combination of characters: body length 2.3–2.9 mm; head subquadrate with dense setae around frontal sulcus (Fig. 29a–b); antennomere 1 approximately 2.5 times longer than wide with dull surface; anterior and posterior frontal foveae round (Fig. 29e); frontal sulcus reaching midpoint of eye (Fig. 29e); hind wings welldeveloped; legs elongate and slender (Fig. 29a–b); abdominal tergites IV–VI with discal carinae; genitalia small, not exceeding 0.25 mm (Fig. 29c–d); present on North Island, not known from South Island (Fig. 30).

KEY TO SPECIES OF THE HELMOREI SPECIES- GROUP

The key is mainly based on male specimens because most female specimens are indistinguishable based on external morphology.

1. Ventral surface of temple normal (Fig. 29f); antennomeres 6–8 longer than wide; left paramere divided for one-third length (Fig. 29c) ...................................... S. helmorei new species

1′. Ventral surface of temple depressed and flat; antennomeres 6–8 subquadrate; left paramere more deeply divided for two-thirds length (Fig. 29d) ....... S. wellingtonensis new species