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Robberfly


Robberfly
Photo Information
Copyright: manee makkala (makkala) Silver Star Critiquer/Gold Note Writer [C: 48 W: 0 N: 84] (1733)
Genre: Animals
Medium: Color
Date Taken: 2008-07-09
Categories: Insects
Exposure: f/4, 1/318 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2008-07-10 5:44
Viewed: 2987
Points: 2
[Note Guidelines] Photographer's Note
Robber flies is the common name of flies in the Diptera family Asilidae. The family Asilidae contains about 7,100 described species worldwide. 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, dragon and damselflies, Ichneumon wasps, grasshoppers, and some spiders.

The larvae are often found in decaying organic matter, such as dung heaps and rotting logs. Other species live in the soil. In most species the larvae are omnivorous.

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Hello Manee,
Very interesting macro. The location for the photo - and the sharpness and colors - could not be better at all.
Greetings.
Janusz

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