Microtendipes diffinis

Author: (Edwards, 1929)

Diagnosis (n=4, reared)
Exuviae 5.9-8.0mm long.
Cephalothorax: Cephalic tubercles elongate conical, 150-160µm high, frontal setae absent (120b.jpg). Thoracic horn of about 10 branches, branches of thoracic horn much shorter than half the length of the abdomen. Thorax strongly rugose, especially mid-laterally below the dorsocentral setae.
Abdomen: Length hook row II 0.41-0.46x width tergite. Posterior points of tergite II not conspicuously larger than those on tergite III. Apical bands III and IV a complete band of points intermediate in size between the smaller and the larger points of the median and anterior bands. Sternite I nearly covered with shagreen points. Pedes spurii B of segment II absent. Vortex present. Comb of segment VIII of 2-5 teeth, the largest the most posterior. Lateral taeniae of segments V-VIII: 3,4,4,5.
Anal segment: Fringe of anal lobe with 52-62 taeniae.
(Linked adult male: Langton and Pinder, 2003a)

Note: Pupae of type Microtendipes pe1. Microtendipes chloris, Microtendipes pedellus and M. diffinis have very similar pupae; the characters given for separation may not hold when more associated material becomes available, and when the pupae of other species are known.

Species keys out at Page 288: Chironomini 185 Microtendipes of the Text Key.

Widespread in Europe, north Africa.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes