Cricotopus
Creators: name: Drayson, Nick
name: Cranston, Peter S.
name: Krosch, Matt N.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chironomidae
Cricotopus

description: Key to pupae of Australian Cricotopus *   
1 Frontal setae present (Fig. 5 A, B). Longest lateral setae of VIII <1/7 width of segment (Fig. 5 D). Segment III often with pedes spurii B (Fig. 5 H)..................................................................................... 2  
- Frontal setae absent (Fig. 5 C). Longest lateral setae of VIII> 1/7 width of segment (Fig. 5 E, F). Segment III lacking pedes spurii B (Fig. 5 I)...................................................................................... 9  
2 Frontal setae on frons, dorsal to antennal sheaths (Fig. 5 A)..................................................... 3  
- Frontal setae on prefrons, ventral to antennal sheaths (Fig. 5 B).................................................. 5  
 3 Thoracic horn mid-brown, spinose (Fig. 6 D); abdomen with reticulate pattern (Fig. 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 D)................ C. wangi sp. n.   
 - Macrosetae> anal lobe length, aligned evenly (Fig. 5 E, F).............................. C. albitarsis Hergstrom sp. n.   
5 Tergite I bare (Fig. 5 H). Tergite II with sparse spinule field anterior to hook row (Fig. 5 H), or bare (Fig. 8 F).............. 6  
- Tergite I with sparse posterior or medio-Iateral spinule fields (Fig. 5 I). Tergite II with extensive spinule field anterior to hook row (Fig. 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 D)........................................... C. brevicornis 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 F, 9A).............................................................. 7  
 7 Thoracic horn virtually smooth, apex tapers to narrow, rounded point (Fig. 6 F)....................... C. howensis sp. n.   
 - Thoracic horn with subapical tubercles, apex blunt (Fig. 6 E)...................................... C. hillmani sp. n.   
 8 Thoracic horn up to 100 µm long, hyaline, with few or no spinules, variable (Fig. 7 J)....... C. varicornis (‘varicornis’ form)   
 - Thoracic horn 120–150 µm long, yellow-tinged, with thorn-like spines (Fig. 7 K)............. C. varicornis (‘cooki’ form)   
9 Tergite II with medio-lateral spine/spinule fields anterior to hook row (Fig. 8 C)................................... 10  
- Tergite II bare anterior to hook row (Figs 8 A, 9B)........................................................... 11  
 10 Tergite II with transverse band of spines between D5 setae, separate from narrow anterior area of spinules (Fig. 9 C). Segment VIII usually with 5 lateral setae (Fig. 5 F) C. tasmania sp. n.   
 - Tergite II bare between D5 setae, separate from broader anterior spinule area (Fig. 8 C). Segment VIII with 4 lateral setae (Fig. 5 E)............................................................................. C. annuliventris (Skuse)   
 11 Thoracic horn absent. Tergites IV–VI with small postero-lateral spinule field (Fig. 8 A)................. C. acornis sp. n.   
 - Thoracic horn present. Tergites IV–VI without postero-lateral spinules (Fig. 9 B)......... C. parbicinctus Hergstrom sp. n.
description: Published as part of 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, pp. 1-40 in Zootaxa 3919 (1) on page 35, DOI: 10.11646/zootaxa.3919.1.1, http://zenodo.org/record/287861