Parasitic Flies

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 There is a family of flies, Tachinidae, which consists of different species of parasitic flies, one of which is Epalpus signifier.  If you look at enough dandelions this time of year, you are likely to spot one — their white rump is a distinctive identifying feature.  This fly is technically a parasitoid, and as such, spends most of its life attached to or within a host organism (Noctuid moth caterpillar) , getting nourishment from it.   Unlike a parasite, it eventually kills or consumes its host

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