Conochironomus pupa, ‘Nee Soon’ sp. indet.

Cranston, Peter S., 2016, Conochironomus (Diptera: Chironomidae) in Asia: new and redescribed species and vouchering issues, Zootaxa 4109 (3), pp. 315-331 : 326

Conochironomus pupa, ‘Nee Soon’ sp. indet. ( Fig. 4 E).

P(♀); SINGAPORE: Central Catchment, Nee Soon Swamp, 1°23'N 103°48’E, 13.iii.2009 (Cranston).

This unassociated pupa differs from the putative C. tobaterdecimus and C. ‘Thai’ above in: cephalic tubercles scarcely developed, frontal setae short, dorsal thorax and scutal tubercle strongly rugulose, tergites VII and VIII densely and broadly spinulose, sternites with much reduced spinulation (relative to Fig. 5 B), hooklets of row on II smaller and the row occupying only 30% of segment width, pedes spurii B scarcely developed, and posterolateral corner of VIII ( Fig. 4 E) with more numerous spines that extend around the segment corner from postero-lateral to fully posterior.

Figures

FIGURE 4. Conochironomus spp., pupa. A, B. Cephalic tubercles; C. Scutal tubercle; D. Antepronotum; E, F. Posterolateral corner of abdominal segment VIII, ventral). A, C. C. tobaterdecimus (Kikuchi & Sasa); B, D, F. C. ‘ Thai’ sp. indet.; E. C. ‘ Nee Soon’ sp. indet.

FIGURE 5. Conochironomus spp., immature stages. A – C. C. tobaterdecimus (Kikuchi & Sasa), pupal abdomen (anal lobe taeniae omitted): A. Dorsal view; B. Segments VII – IX, ventral; C. Posterolateral corner of VIII, ventral. D-G. Conochironomus spp., Larvae. D. Antenna, C. tobaterdecimus; E. Antenna, C. ‘ Mae Ping’ sp. indet.; F. Mentum and ventromental plate, C. tobaterdecimus; G. Mentum (part), C. ‘ Mae Ping’ sp. indet.