9. flavipes species-group

(2 species)

Diagnosis. The members of the flavipes species-group can be distinguished from other Sagola species-groups by the following combination of characters: body length 2.4–2.8 mm; head transverse, widest across eyes (Fig. 27e); antennomere 1 approximately 2 times longer than wide with sparse punctures; anterior frontal fovea small round, but not externally observable because it is covered by the connected frontal rostrum (Fig. 27e); posterior frontal fovea elongate (Fig. 27e); frontal sulcus reaching length of vertexal fovea (Fig. 27e); ventral surface of male head with setose horn medially (Fig. 27f: arrow); hind wings reduced to small pads; fore femur with semicircular depression; mid-tibia bent; Male tergite IV without microtrichial patch; abdominal tergites IV–VI with discal carinae; abdominal ventrites IV–VI with basolateral foveae; present on North Island, not known from South Island (Fig. 28).

KEY TO SPECIES OF THE FLAVIPES SPECIES- GROUP

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

1. Horn of ventral surface of head shorter than wide; median lobe of genitalia branched into 3 lobes, major lobe triangular (Fig. 27c); parameres asymmetrical and as long as median lobe (Fig. 27c).................... S. flavipes Broun

1′. Horn of ventral surface of head as long as wide; median lobe of genitalia branched into 2 lobes, major lobe rectangular (Fig. 27d); parameres symmetrical and reaching midpoint of median lobe (Fig. 27d) .................... .......................................... S. sulcator Broun