Early stages - Chorisops species

Recognising the genus

1. Chorisops tibialis (Dull Four-spined Legionnaire) - confirmed by rearing

Photo by Nicola Garnham. From leaf litter in January 2020. About half the size of the Sargus bipunctatus larva shown below. A male fly emerged on 9 June 2020.

Larva	Puparium
Puparium: head	Puparium: last segment
Freshly emerged adult male

2. Chorisops tibialis (Dull Four-spined Legionnaire) - confirmed by rearing

Photos by Jane Thomas of a larva found under a log on 29 January 2020, Mid-west Yorkshire. A male fly emerged on 18 June 2020.

3. cf Chorisops - larva only

A candidate Chorisops species. Larva found in leaf-litter at Dancersend reserve, Buckinghamshire, on 29 December 2019, by Sue Taylor (photos by Martin Harvey).