Metriocnemus inopinatus

Author: Strenzke, 1950

Exuviae 3.5, 3.7mm long (n=2).
Abdomen: Tergites without longitudinal ridges posteriorly. Tergites II-VIII each with a posterior transverse row of teeth which may be flattened and contiguous, without a similar anterior transverse row. Tergites VI-VIII without a median circular patch of spinules. Sternites not armed posteriorly with teeth.
Anal segment: Anal lobes flat, without strong teeth along the lateral margins and not extended posteriorly into a downwardly curved point. Anal lobe ratio 2.0 (n=1). Anal lobes without fringe; with three apical setae on each lobe. Anal macrosetae normal, weakly hooked apically, length 0.40, 0.45x lobe length (n=2) (061l.jpg).
(Linked adult male: Strenzke, 1950b)

Species keys out at Page 780: Orthocladiinae 192 Metriocnemus of the Text Key.

NW Europe.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Larvae amongst vegetation in damp situations, e.g. the leaf axils of Scirpus.