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Not being able to find aphids for the lacewing larvae, I settled for whatever I could find on the leaves of the plants surrounding the office. Fortunately, the larvae took quite well to the whiteflies (Aleyrodidae) and other smiliar-sized insects.
I placed the larvae and their prey onto an island surrounded by a moat in a dish, and observed the proceedings under the microscope. It was like watching Discovery Channel live - almost!
A larva loads itself with debris (a mixture of pieces of vegetation and the remnants of its previous meals, serving as both camouflage and defense against subjugation); it arches backwards and applies the packet to the spikes on its back:
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Here one of the larvae has impaled the fly on its jaws and is sucking it out, and another is trying to steal debris off the first:
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In this short video clip (please excuse Bach in the background), a larva appears to have successfully harrassed another and taken over its place at the table: