Twin-spot Centurion Soldier Fly (Sargus bipunctatus) Fulbourn Fen NR

Description
This is our largest Sargus (wing length to 10mm). Thorax shiny metallic green, scutellum without spines, veins in the wing quite distinct. The male and female of this species differ considerably in appearance, males are very slim with a metallic green thorax and metallic bronze abdomen (like male Chloromyia formosa but with a much narrower build). Females have a broader build with the base of the abdomen extensively reddish contrasting with a blackish tip bearing blue reflections. Both sexes have orange legs and a pair of whitish spots on the frons just above the antennae.
Habitat
Low vegetation. Adults can be found in a variety of open and wooded habitats, usually sunbathing on foliage in sheltered spots.
When to see it
August to early November.
Life History
The larvae have been reared from cow dung, compost, rotting vegetation and decaying fungi…Nature spot

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