Microchironomus deribae

Author: (Freeman, 1957)

Exuviae 5.4-5.8mm long (n=3).
Cephalothorax: Cephalic tubercles conical, 102-125µm high (n=3). Frontal setae preapical (109f.jpg), 43, 58µm long (n=2). Antepronotum without a conspicuous dorsal mound.
Abdomen: Hook row II medially interrupted, the gap in the middle up to equal to the length of each half of the row; hooks 21/28, 34/28, 34/34 (n=3). Tergites II-V without a distinct unbroken posterior row or band of strong points. Sternite I without toothed mounds. Sternite II with a well-developed anterior transverse band of spines or sharp teeth (111e.jpg). Comb of segment VIII of one or two projecting thorns, occasionally absent, on the apico-lateral corner. Lateral taeniae of segments V-VIII: 4,4,4,4.
Note: Armament rather more extensive than in Microchironomus lendli and Microchironomus tener.
Anal segment: Fringe of anal lobe with 63-91 taeniae (n=3).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 341: Chironomini 238 Microchironomus of the Text Key.

Widespread in Europe (not Scandinavia), circum-Mediterranean.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes
Brackish water ponds and ditches.