Cryptotendipes holsatus

Author: Lenz, 1959

Exuviae 4.7-5.7mm long (m=5.1mm, n=5) (093-1.jpg).
Cephalothorax: Cephalic tubercles 40-85µm long (n=7). Frontal setae 45-80µm long (n=7). Thoracic horn 3.7-4.2mm long (n=4), one branch of the horn is very long and stiff, extending forwards for over half the exuvial length and not itself branched for its proximal half, the other initial branches small and clustered around its base. Posterior thoracic mound hardly indicated.
Abdomen: Hook row II absent. Dorsal abdominal armament restricted to large points set on the apices of posterior transverse mounds on tergites II-VI, mounds divided medially on segments II-V, entire on VI (093b.jpg). Ventral posterior mounds (II)III-IV medially divided. Comb of segment VIII 135-180µm long (n=4), thorn-like, set close behind the fourth lateral taenia. Lateral taeniae of segments V-VIII: 3,4,4,(3)4.
Anal segment: Fringe of anal lobes with 6-15 narrow, short, well-spaced anterior taeniae and 10-21 broad, long, dense posterior taeniae (n=7) (093c.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 107: Chironomini 4 Cryptotendipes of the Text Key.

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

Ecological notes
Rivers and ditches.