Metriocnemus tristellus

Author: Edwards, 1929

Exuviae 2.6-4.5mm long (m=3.3mm, n=7).
Abdomen: Armament of tergites of minute points. Tergites II-VIII with the flattened teeth of the posterior transverse rows conical in form. Tergites without longitudinal ridges posteriorly. Tergites VI-VIII without a median circular patch of spinules. Sternites not armed posteriorly with teeth.
Anal segment: Anal lobes flat, without fringe or strong teeth along the lateral margins and not extended posteriorly into a downwardly curved point. Anal lobe ratio 1.7-1.8 (n=3). Anal lobes with 3 spinous anal macrosetae on each lobe; length of setae 0.25-0.33x lobe length (n=5) (062l.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 786: Orthocladiinae 198 Metriocnemus of the Text Key.

Holarctic species: widespread in Europe.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Wet meadows and flooded lake margins.