15. auripila species-group

(8 species)

Diagnosis. Members of the auripila speciesgroup can be distinguished from other Sagola species-groups by the following combination of characters: body small, length 1.8–2.4 mm; antennomere 1 approximately 1.5–2.0 times longer than wide; frontal sulcus deep and long extending between posterior edge of eye and end of head (Fig. 38j–k); hind wings reduced to small pads; abdominal tergites IV–VI with discal carinae.

KEY TO SPECIES OF THE AURIPILA SPECIES- GROUP

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

1. Antennomere 1 approximately 2 times longer than wide, with dull surface; frontal sulcus reaching posterior margin of head...............................................................2

1′. Antennomere 1 approximately 1.5 times longer than wide; frontal sulcus not extending posterior to vertexal fovea..................3

2(1). Left paramere longer than wide and bent (Fig. 38g)............ S. gimmeli new species

2′. Right paramere longer than wide with round depression at base (Fig. 38i) .......... ........................... S. sokolovi new species

3(1′). Frontal sulcus distinctly wide (Fig. 38j: arrow) ................... S. spiniventris Broun

3′. Frontal sulcus narrow (Fig. 38k: arrow) ............................................................ 4

4(3′). Antennomeres 5–10 weakly enlarged; hind femur with triangular process; only known from North Island........................5

4′. Antennomeres 5–10 simple; hind femur simple; known from Chatham Islands or Three Kings Islands .................................. 6

5(4). Lateral median lobe of genitalia rectangular with emarginate apical lobe; parameres C-shaped (Fig. 38a)..... S. auripila Broun

5′. Lateral median lobe of genitalia long curved with wave-shaped ventral margin; parameres weakly curved (Fig. 38e)......... ......................... S. chandleri new species

6(4′). Parameres asymmetrical and setae only apically (Fig. 38f); only known from Three Kings Islands (Fig. 40: black square) ........ .................. S. threekingsensis new species

6′. Parameres symmetrical and setae on middle; only known from Chatham Islands ........... 7

7(6′). Median lobe of genitalia S-shaped (Fig. 38c) ...................... S. chathamensis new species

7′. Median lobe of genitalia rectangular (Fig. 38d) ....... S. pittensis new species