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Archive for August 7, 2017

Newborn Milkweed Tussock Moth Larvae A Bonanza For Predatory Stink Bugs

8-7-17 milkweed tussock moth larvae, first instar and (3) (003)Monarch larvae aren’t the only insects equipped to feed on the toxic cardiac glycoside-filled leaves of milkweed. Milkweed Tussock Moth larvae also dine on them, avoiding veins due to the latex-like, sticky white sap that could glue them in place. When they first hatch, Milkweed Tussock Moth larvae tend to stick together in “herds,” all feeding on the underside of the same leaf. This behavior provides a gold mine for predators such as predatory stink bugs (pictured) that discover them. Unlike their (plant) sap-sucking stink bug relatives, predatory stink bugs feed on more than 100 species of insect pests, often attacking insects much larger than themselves, drinking their body fluids with their needle-like beak. (Photo taken and kindly donated by Chris Doyle)