Stempellinella brevis

Author: (Edwards, 1929)

Exuviae 2.2-2.9mm long (m=2.5mm, n=20).
Cephalothorax: Cephalic tubercles 35µm long (n=1). Thoracic horn 325-430µm long (n=9), with the apical two-thirds armed with colourless teeth; ThR 14.8-17.2 (n=3).
Note: Thorax very nearly smooth except anteriorly by suture. Dorsal median antepronotal seta inserted on an insignificant tubercle.
Abdomen: Armament of tergite II hardly, if at all reaching beyond seta D3 (occasionally some points are present at level D1, but there is a transverse points-free gap between them and the posterior point patches). Armament of tergite II less extensive than on III. Tergites III-VI with a median and posterior patch of points on each side of the mid-line, which may be sufficiently extensive to form a single large continuous patch. Small pedes spurii B present on segment II, pleura of this segment unarmed. Lateral borders of segment VIII completely darkened, postero-lateral corners with a large spur. Lateral taeniae of segments V-VIII: 3,4,4(3),3(2).
Anal segment: Fringe of anal lobe with 11-17 taeniae (m=14, n=20).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 374: Tanytarsini 17 Stempellinella of the Text Key.

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

Ecological notes
Lakes and streams.