Green lacewings are aptly named for the prominent venation of the adults’ wings. Some species in this insect family even have “ears” in the larger veins that allow them to detect the ultrasonic sounds made by hunting bats. Lacewing larvae and adults are both predators of soft-bodied insects such as aphids. Larval lacewings have long, hollow mandibles with which they puncture prey and suck out the liquefied contents, leaving the woolly husks. Some species of lacewing larvae have hairy backs, and camouflage themselves when in the presence of woolly aphids by sticking aphid husks on these hairs. These “trash packets” camouflage the lacewing larvae from predators, including ants that would otherwise attack the larvae if they recognized that they were lacewings and not woolly aphids.
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September 19, 2013 | Categories: Animal Adaptations, Anti-predatory Device, Ants, Aphids, Arthropods, camouflage, Defense Mechanisms, Insects, Invertebrates, Metamorphosis, September, Uncategorized | Tags: Aphids, Chrysopidae, Green Lacewings, Lacewing Larvae, Lacewings, Neuroptera, Trash Packets, Woolly Aphids | 3 Comments
If you’ve never heard of a Spongilla Fly, you’re not alone. We don’t see its larval stage, as it lives under water, where it feeds exclusively on fresh water sponges. You can find these sponges living in the still waters of large rivers, lakes and wetlands. The beautiful silken net, as well as the small cocoon inside the net, are created by a Spongilla Fly larva after it crawls out of the water and chooses a spot on land on which to pupate (in this case on a seat cushion). The entire structure is less than ¼” in diameter.
July 31, 2012 | Categories: Arthropods, Cocoons, Insects, Invertebrates, July, Metamorphosis, Pupae | Tags: Cocoon, Insect Metamorphosis, Metamorphosis, Net-winged Insects, Neuroptera, Pupa, Sisyridae, Spongilla Fly | 4 Comments