Orthocladius fuscimanus

Author: (Kieffer, 1908)

Exuviae 4.5-5.8mm long (n=5) (074-1.jpg).
Cephalothorax: Thoracic horn 170-225µm long (074b.jpg). ThR 3.8-4.5 (n=6). Four dorsocentral setae, the first, third and fourth thick, the second conspicuously thinner.
Abdomen: Hook row of segment II short, less than 0.34x width of segment II, usually of three or more transverse rows of hooks, or absent (its position occupied by a band of anteriorly directed spinules). Shagreen limited in distribution on tergites. Median point patches absent or just indicated on tergite II; present on III-VI(VII). Posterior transverse point bands present on tergites II-VII, absent on VIII. Lateral points of the posterior transverse bands of tergites II and III obviously longer than the median (074c.jpg).
Anal segment: Anal lobe ratio 1.8, 1.9 (n=2). Anal lobes without fringe; all three apical setae of the anal lobes of similar length and thickness, 0.57-0.84x length of the lobe (n=4) (074d.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 853: Orthocladiinae 264 Orthocladius of the Text Key.

Widespread in Europe, circum-Mediterranean, Canary Islands.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Streams and rivers; lakes in the north.