Pagastiella orophila

Author: (Edwards, 1929)

Exuviae 3.0-3.8mm long (n=8) (126-1.jpg).
Cephalothorax: Cephalic tubercles shallow, conical, 25-60µm high, length 0.7-1.0x breadth, n=4). Frontal setae 135-215µm long (n=5). Thoracic horn with few branches, branches very long, over half the length of the abdomen, but often broken off (126-1.jpg). Thorax with conspicuously large granules near suture (112b.jpg).
Abdomen: Length hook row II 0.35-0.53x width tergite (n=3); hooks 38-56 (n=6). Tergite II unarmed; III-VI with transverse anterior point bands. Vortex present. Comb of segment VIII of 1-5 pale golden teeth on the apico-lateral corner of VIII (n=6). Lateral taeniae of segments V-VIII: 3,3,4,4/5.
Anal segment: Fringe of anal lobe with 10-15 taeniae (n=6) (112c.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 271: Chironomini 168 Pagastiella of the Text Key.

Holarctic species: widespread in Europe.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes
Northern and montane lakes.