Cricotopus caducus

Author: Hirvenoja, 1973

Diagnosis (in part after Hirvenoja, 1973a - in italics)
Exuviae 2.7-3.2mm long (n=15).
Cephalothorax: Cephalic tubercles absent; frontal setae on praefrons. Thoracic horn absent. Suture wrinkled or slightly granular.
Abdomen: Length hook row II 0.46 of width tergite II (n=1); hooks 38-57 (n=4). Posterior margin of tergite II with a few strong blunted spines. Tergites III-VI with strong shagreen, anterior and posterior transverse bands clearly separated, anterior bands kidney-shaped. Armament of tergites III-V not extending past the anterior adhesion marks (087j.jpg). Tergite armament less extensive than in Cricotopus algarum, on III frequently reduced to a small transverse median band (087k.jpg). Point patches absent on tergites VII and VIII. Pedes spurii B II weakly developed. Dorsal setae I-VIII: 4,4,4,5,5,5,5,2; Lateral setae I-VIII: 1,3,3,3,3,3,3,4; Ventral setae I-VIII: 1,4,4,4,4,4,4,0; lateral seta 4 on VIII not stronger than the other lateral setae.
Anal segment: Anal lobe ratio 1.9 (n=1). Anal lobes without fringe. Anal macrosetae more or less equally strong, about 150µm long; length 0.6, 0.7x length of the anal lobe (n=2).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 946: Orthocladiinae 357 Cricotopus of the Text Key.

Widespread in Europe, Middle East.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Brackish-water and freshwater lakes, especially near the sea.