Tachina fera: a parasitic fly

Some species of wildlife are exquisitely beautiful to the human eye, some are considered down right ugly but, regardless of human perceptions in this way, all species are quite fascinating. Well, I think so anyway. 
By human standards this parasitic fly (Tachina fera) is an unpleasant character all round, not just in looks, but because it parasitises butterfly and moth larvae, usually one grub per host. It is identifiable by its rusty colouring on the sides of the abdomen, fera being iron which rusts.
I took this photograph on brambles near the reed beds along the River Frome at Swineham Point, near Wareham and my book says it is often common on waterside plants in late summer.
Tachina fera: a parasitic fly

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