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robber fly

Description:

An unidentified robber. All robber flies have stout, spiny legs, a dense moustache of bristles on the face (mystax), and 3 simple eyes (ocelli) in a characteristic depression between their two large compound eyes. The mystax helps protect the head and face when the fly encounters prey bent on defense. The antennae are short, 3-segmented, sometimes with a bristle-like structure called an arista. The short, strong proboscis is used to stab and inject victims with saliva containing neurotoxic and proteolytic enzymes which paralyze and digest the insides; the fly then sucks the liquefied meal through the proboscis. Many species have long, tapering abdomens, sometimes with a sword-like ovipositor. Others are fat-bodied bumblebee mimics. Adult robber flies attack other flies, beetles, butterflies and moths, various bees, ants, dragon and damselflies, Ichneumon wasps, grasshoppers, and some spiders. http://en.wikipedia.org/wiki/Asilidae

Habitat:

Spotted in a large semi-urban yard & garden, near a disturbed patch of remnant lowland forest.



No species ID suggestions

Indonesia

Lat: -2.56, Long: 140.50

Spotted on May 24, 2012
Submitted on Aug 5, 2012

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