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

publication ID

https://doi.org/ 10.11646/zootaxa.3919.1.1

publication LSID

lsid:zoobank.org:pub:218630EE-6BF7-4E35-A8F6-9E8260D60FA0

DOI

https://doi.org/10.5281/zenodo.6122663

persistent identifier

https://treatment.plazi.org/id/A44D4A76-B37F-FFFF-FF34-FCC1FA6DC1F2

treatment provided by

Plazi

scientific name

Cricotopus
status

 

Key to pupae of Australian Cricotopus View in CoL *

1 Frontal setae present ( Fig. 5 View FIGURE 5 A, B). Longest lateral setae of VIII <1/7 width of segment ( Fig. 5 View FIGURE 5 D). Segment III often with pedes spurii B ( Fig. 5 View FIGURE 5 H)..................................................................................... 2

- Frontal setae absent ( Fig. 5 View FIGURE 5 C). Longest lateral setae of VIII> 1/7 width of segment ( Fig. 5 View FIGURE 5 E, F). Segment III lacking pedes spurii B ( Fig. 5 View FIGURE 5 I)...................................................................................... 9

2 Frontal setae on frons, dorsal to antennal sheaths ( Fig. 5 View FIGURE 5 A)..................................................... 3

- Frontal setae on prefrons, ventral to antennal sheaths ( Fig. 5 View FIGURE 5 B).................................................. 5

3 Thoracic horn mid-brown, spinose ( Fig. 6 View FIGURE 6 D); abdomen with reticulate pattern ( Fig. 8 View FIGURE 8 E)............... C. conicomis sp. n.

- Thoracic horn hyaline, smooth; abdomen non-reticulate....................................................... 4

4 Macrosetae <0.5 anal lobe length; proximal macroseta displaced anteromedially ( Fig. 5 View FIGURE 5 D)................ C. wangi View in CoL sp. n.

- Macrosetae> anal lobe length, aligned evenly ( Fig. 5 View FIGURE 5 E, F).............................. C. albitarsis Hergstrom View in CoL sp. n.

5 Tergite I bare ( Fig. 5 View FIGURE 5 H). Tergite II with sparse spinule field anterior to hook row ( Fig. 5 View FIGURE 5 H), or bare ( Fig. 8 View FIGURE 8 F).............. 6

- Tergite I with sparse posterior or medio-Iateral spinule fields ( Fig. 5 View FIGURE 5 I). Tergite II with extensive spinule field anterior to hook row ( Fig. 5 View FIGURE 5 I)......................................................................................... 8

6 Segments III and IV without spinule fields on paraterga; tergite III with D4 setae noticeably stouter than on tergites II and IV; tergites II–VII with pale adhesion marks ( Fig. 8 View FIGURE 8 D)........................................... C. brevicornis View in CoL sp. n.

- Segments III and IV with spinule fields on paraterga; tergite III with D4 setae similar to those on tergites II and IV; tergites II–VII with dark adhesion marks ( Figs 8 View FIGURE 8 F, 9A).............................................................. 7

7 Thoracic horn virtually smooth, apex tapers to narrow, rounded point ( Fig. 6 View FIGURE 6 F)....................... C. howensis View in CoL sp. n.

- Thoracic horn with subapical tubercles, apex blunt ( Fig. 6 View FIGURE 6 E)...................................... C. hillmani View in CoL sp. n.

8 Thoracic horn up to 100 µm long, hyaline, with few or no spinules, variable ( Fig. 7 View FIGURE 7 J)....... C. varicornis View in CoL (‘varicornis’ form)

- Thoracic horn 120–150 µm long, yellow-tinged, with thorn-like spines ( Fig. 7 View FIGURE 7 K)............. C. varicornis View in CoL (‘cooki’ form)

9 Tergite II with medio-lateral spine/spinule fields anterior to hook row ( Fig. 8 View FIGURE 8 C)................................... 10

- Tergite II bare anterior to hook row ( Figs 8 View FIGURE 8 A, 9B)........................................................... 11

10 Tergite II with transverse band of spines between D5 setae, separate from narrow anterior area of spinules ( Fig. 9 View FIGURE 9 C). Segment VIII usually with 5 lateral setae ( Fig. 5 View FIGURE 5 F) C. tasmania View in CoL sp. n.

- Tergite II bare between D5 setae, separate from broader anterior spinule area ( Fig. 8 View FIGURE 8 C). Segment VIII with 4 lateral setae ( Fig. 5 View FIGURE 5 E)............................................................................. C. annuliventris (Skuse) View in CoL

11 Thoracic horn absent. Tergites IV–VI with small postero-lateral spinule field ( Fig. 8 View FIGURE 8 A)................. C. acornis View in CoL sp. n.

- Thoracic horn present. Tergites IV–VI without postero-lateral spinules ( Fig. 9 View FIGURE 9 B)......... C. parbicinctus Hergstrom View in CoL sp. n.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Chironomidae

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