Cryptotendipes pflugfelderi

Author: Reiss, 1964

Diagnosis (Material in coll. ZSM)
Exuviae 4.2-4.9mm long (m=4.5mm, n=7).
Cephalothorax: Cephalic tubercles 58-75µm long (m=69.2µm, n=5). Frontal setae 65-95µm long (n=4). One branch of the thoracic 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 swollen anteriorly and posteriorly.
Abdomen: Length hook row II 0.21-0.23x width tergite (n=3); tending to be separated medially in some specimens, e.g. 0.08 (0.04 gap) 0.09x width tergite; hooks 9-16 (m=13, n=7). Dorsal abdominal armament restricted to large points set on the apices of posterior transverse mounds on tergites II-VII, continuous except on segment II where it is medially broken (093g.jpg); ventral armament restricted to posterior transverse mounds present on sternites (II)III-VII. Comb of segment VIII 0-100µm long (m=70µm, n=8), thorn-like, set close behind the fourth lateral taenia. Lateral taeniae of segments V-VIII: 4,4,4,4.
Anal segment: Fringe of anal lobe with 24-31 taeniae (m=28.7, n=6).

Species keys out at Page 106: Chironomini 3 Cryptotendipes of the Text Key.
Note: According to the description of the pupa of Cryptotendipes acalcar in Reiss (1990), it would run here. It differs from pflugfelderi in lacking the very long branch to the thoracic horn and the posterior transverse point rows of the tergites are continuous, not medially broken.

Britain, Germany, Finland.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes