Chelagyrtodes

Key to species of Chelagyrtodes

1. Male with chelate protibia (Fig. 2 a); antennal segment 8 quadrate (South or North Island)............................ 5

- Male without modified protibia (Fig. 2 b); antennal segment 8 transverse (South Island).............................. 2

2. Epistomal suture present or absent; sclerites of internal sac confined to apical half.................... C. newtoni n. sp.

- Epistomal suture absent; sclerites of internal sac distributed throughout internal sac or basal.......................... 3

3. Body form oval with sides of elytra converging posteriorly at middle; parameres extremely broad; internal sac with 3 heavily pigmented sclerites (Fig. 5 f)............................................................... C. rotundus n.sp.

- Body form parallel with sides of elytra converging posteriorly at apical ½; parameres narrow; internal sac without 3 heavily pigmented sclerites.................................................................................... 4

4. Parameres apically hooked (Fig. 5 d); internal sclerites laterally bilobed, not fused basally at midline....... C. haasti n. sp.

- Parameres weakly curved (Fig. 5 c); internal sclerites giving rise to anterior median strut............... C. glacicola n. sp.

5. Elytra deeply punctate and lacking transverse strigae (Fig. 4 b)..................................... C. davidi n. sp.

- Elytra shallowly punctate, with transverse strigae (Fig. 4 a)............................. C. crowsoni Szymczakowski