140509 Boxmoor cress beds 0854

140509 Boxmoor cress beds 0854

Observation - 140509 Boxmoor cress beds 0854 - UK and Ireland. Description: A predatory fly, but with short antennae - so not sawfly or ichnuemon? Front and middle legs orange with dark tarsi, hind legs black with orange knees. Only 2 footpads (I think), and pale yellow halteres.

A predatory fly, but with short antennae - so not sawfly or ichnuemon? Front and middle legs orange with dark tarsi, hind legs black with orange "knees". Only 2 footpads (I think), and pale yellow halteres.