Cricotopus

Drayson, Nick, Cranston, Peter S. & Krosch, Matt N., 2015, Taxonomic review of the chironomid genus Cricotopus v. d. Wulp (Diptera: Chironomidae) from Australia: keys to males, females, pupae and larvae, description of ten new species and comments on Paratrichocladius Santos Abreu, Zootaxa 3919 (1), pp. 1-40 : 35

Key to adult females of Australian Cricotopus

(excluding C. howensis , C. wangi , inadequately known as adult female; colour patterns may be as in Male ( Fig. 1 ))

1 Tergite IV wholly pale.................................................................................. 2

- Tergite IV wholly or partly dark.......................................................................... 5

2 All legs pale, with no dark sections.......................................................... C. tasmania sp. n.

- Some darkening of some leg segments..................................................................... 3

3 Tibiae and tarsomeres of mid- and hind legs pale.................................... C. albitarsis Hergstrom sp. n.

- All tibiae dark, with or without pale bands; all tarsomeres dark................................................. 4

4 Spermathecal capsules ovoid ( Fig. 4 I)...................................................... C. varicornis sp. n.

- Spermathecal capsules spheroid ( Fig. 4 F)..................................................... C. hillmani sp. n.

5 All tergites uniformly dark.............................................................................. 6

- Tergite I pale; pale bands on tergites II and IV............................................................... 8

6 All tibiae with pale bands..................................................... C. parbicinctus Hergstrom sp. n.

- All tibiae uniformly dark................................................................................ 7

7 Spermathecal capsules spheroid ( Fig. 4 A)..................................................... C. acornis sp. n.

- Spermathecal capsules elongate ( Fig. 4 E).................................................... C. conicornis sp. n.

8 Tarsomeres of mid- and hind legs pale; all tibiae pale with distal 1/10 dark........................ C. brevicornis sp. n.

- Tarsomeres dark; fore and mid-tibiae pale on proximal1/3; hind tibia dark...................... C. annuliventris (Skuse)

Figures

FIGURE 1. Cricotopus adult males. Columns (left to right): legs, anterior to posterior; thorax; dorsal abdomen. A. C. acornis, B. C. albitarsis, C. C. annuliventris, D. C. brevicornis, E. C. conicornis, F. C. hillmani, G. C. parbicinctus, H. C. tasmania, I. C. varicornis.

FIGURE 4. Cricotopus female. Spermathecae. A. C. acornis, B. C. albitarsis, C. C. annuliventris, D. C. brevicornis, E. C. conicornis, F. C. hillmani, G. C. parbicinctus, H. C. tasmania, I. C. varicornis.