11. rustica species-group

(4 species)

Diagnosis. Members of rustica species-group can be distinguished from other Sagola speciesgroups by the following combination of characters: body length 2.3–2.9 mm; antennomere 1 approximately 1.5–2.0 times longer than wide (Fig. 31i); ventral surface of male head convex with setose gular region; anterior frontal fovea oval (Fig. 31j), posterior frontal fovea elongate (Fig. 31j); hind wings well-developed; abdominal tergites IV–VI with discal carina; parameres long, triangular, and broader than the median lobe (Fig. 31e–h).

KEY TO SPECIES OF THE RUSTICA SPECIES- GROUP

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

1. Antennomeres 4–7 elongate; eye as long as temple (Fig. 31b).... S. duplicata Broun

1′. Antennomeres 4–7 slightly longer than wide or subquadrate; eye one-half length of temple..................................................2

2(1′). Apical major lobe of genitalia bluntly triangular (Fig. 31g) ..................................... ........... S. marlboroughensis new species

2′. Apical major lobe of genitalia round.....3

3(2′). Larger genitalia, ca. 0.35 mm; minor lobe of genitalia longer than major lobe (Fig. 31e) ........................................... S. rustica Broun

3′. Smaller genitalia, ca. 0.25 mm; minor lobe of genitalia as long as major lobe (Fig. 31h) ............................ S. walkerae new species