Bryophaenocladius subvernalis

Author: (Edwards, 1929)

Exuviae 3.9-4.6mm long (n=7) (069-1.jpg).
Cephalothorax: Thin-walled elongate thoracic horn 175-200µm long (but difficult to see unless projecting from the specimen) (070n.jpg); ThR 4.6-10 (n=4). Median antepronotal setae 1,2: 78-93; 68-95µm long; precorneal setae 1-3: 70-85; 50-80; 50-80µm long; dorsocentral setae 1-3: 30-60; 25-50; 25-73µm long (n=5); all setae thorn-like.
Abdomen: Tergite I generally incompletely covered with points; when completely covered, most of the points are minute, smaller than those on tergites VIII and IX. Tergites II-VIII, apart from small bare patches, covered with more or less evenly sized points. Posterior points of tergites VI-VIII less reduced than the preceding points on those segments, particularly conspicuous on segment VIII. Conjunctives unarmed.
Anal segment: Anal lobes fanned out posteriorly, without fringe (069c.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 828: Orthocladiinae 239 Bryophaenocladius of the Text Key.

Palaearctic species: widespread in Europe, north Africa.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Streams and rivers; larvae in moss, near or below the water surface.