Chelagyrtodes

Seago, Ainsley E. & Leschen, Richard A. B., 2011, Revision and phylogeny of Chelagyrtodes Szymczakowski (Coleoptera: Leiodidae: Camiarinae: Agyrtodini), Zootaxa 3090, pp. 1-20 : 4

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

Figures

FIGURE 4. Habitus photographs of adult Chelagyrtodes. a) C. crowsoni; b) C. davidi; c) C. glacicola; d) C. haasti; e) C. newtoni; f) C. rotundus.

FIGURE 5. Aedeagus and male genital segment of Chelagyrtodes. a) C. crowsoni; b) C. davidi; c) C. glacicola; d) C. haasti; e) C. newtoni; f) C. rotundus.

FIGURES 2 – 3. Details of Chelagyrtodes. 2) Tibial dimorphism of adult male: a) chelate protibia (C. crowsoni); b) simple protibia (generalized). 3) Generalized mandible with subapical spine cluster (SSC).