Chironomus usenicus

Author: Loginova and Belyanina, 1994

Diagnosis (material leg. Natalia Polukonova.)
Exuviae 14.5, 16.9mm long (n=2).
Colour: Exuviae golden to golden-brown.
Cephalothorax: Cephalic tubercles LxB 210x265; 320x240µm (n=2). Frontal setae 88µm long (n=1). Basal ring of thoracic horn 305x112; 320x104µm; tracheolar patch 190x56; 248x65µm; 18 tracheoles across (n=1); 3µm in diameter. Thorax smooth.
Abdomen: Hook row II entire, length of row 0.46, 0.49x width tergite (n=2); 93, 96 hooks (n=2). Armament of tergites II-VI not strongly waisted and with the posterior transverse band not successively increasing in extent to tergite VI; usually reduced on VI. Sternites III and IV without shagreen. Pleura of segment IV with a few scattered spinules, or none. Comb of segment VIII with 19-26 narrow teeth on the end of an elongate ventral cuticular mound which exceeds appreciably the apico-lateral corner of the segment.
Anal segment: Anal lobe with 177-214 fringe taeniae (n=2).

Species keys out at Page 151: Chironomini 48 Chironomus of the Text Key.

(For more information see module IdentifyIt – file: Chironominae).