Brillia bifida (Kieffer, 1909)

Chamutiová, Tímea, Hamerlík, Ladislav & Bitušík, Peter, 2020, Subfossil chironomids (Diptera, Chironomidae) of lakes in the Tatra Mountains an illustrated guide, Zootaxa 4819 (2), pp. 216-264 : 230

Brillia bifida - type

This is a new morphytype, not listed in Brooks et al. (2007).

Head capsule yellow, postocciptal margin blackish. Well sclerotized specimens have distinct brown-black oval patch on the postmentum. Fourth and fifth lateral teeth are adpressed to each other ( Fig. 28 ).

Remarks: This morphotype corresponds to B. bifida , the only species from bifida -group known in Europe. It was rare, only found in two surveyed lakes.

Figures

FIGURES 28–31. Brillia bifida-type: 28—head capsule (arrows indicate fourth and fifth lateral teeth of the mentum and position of seta submenti), A—antenna (arrow indicates second segment). Chaetocladius piger-type: 29—bifid premandible, A—antenna. C. piger-type: 30—labral lamellae (arrow indicates its position). C. piger-type: 31—head capsule (arrow indicates seta submenti), A—detail of mentum (arrows indicate minute last lateral tooth and bulbous ventromental plate).