Kloosia pusilla

Author: (Linnaeus, 1767)

Diagnosis (Material in coll. ZSM)
Exuviae about 2.9-3.5mm long (n=3) (103-1.jpg).
Cephalothorax: Cephalic tubercles very shallow. Frontal setae 30-60µm long (n=3). Thoracic horn much branched (103b.jpg).
Abdomen: Hook row II medially interrupted, length of row 0.09-0.13 (0.18-0.19 gap) 0.10-0.12x width tergite; hooks 10/10-12/14 (n=3). Tergites II-VI nearly covered with strong points which are elongated posteriorly to produce a transverse row of long spines (103c.jpg). The point patches increase in extent from tergite II to V, but on VI the patch is more or less reduced. Sternites I and II or I-III with transverse rows of backwardly directed colourless spines. Comb of segment VIII a few thorns, inserted directly on the postero-lateral edge of the segment. Lateral taeniae of segments V-VIII: 4,4,4,4.
Anal segment: Fringe of anal lobe with 23-29 taeniae (n=3) (103d.jpg).

Species keys out at Page 222: Chironomini 119 Kloosia of the Text Key.

Palaearctic species: widespread in Europe (not British Isles), circum-Mediterranean.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes
Rivers: Greece; Tunisia.