Metriocnemus martinii

Author: Thienemann, 1921

Exuviae 3.2-3.4mm long (n=4).
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 lobe ratio 1.6, 1.7 (n=2); lobes flat, without strong teeth along the lateral margins and not extended posteriorly into a downwardly curved point; fringe absent. Anal lobes rectangular with the outer corner projecting posteriorly; the anal macrosetae minute, two of them set on the projecting corner (061m.jpg). Length of anal macrosetae 0.025, 0.03x length of the anal lobe (n=2).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 781: Orthocladiinae 193 Metriocnemus of the Text Key.

Widespread in (W+C) Europe (not Mediterranean).
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Larvae in rot holes in trees.