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The saddleback caterpillar (Acharia stimuli, formerly Sibine stimulea) is the larva of a species of moth native to eastern North America. It is also found in Mexico. [ 1 ] The species belongs to the family of slug caterpillars, Limacodidae .
Larvae might be confused with the similarly flattened larvae of lycaenid butterflies, but those caterpillars have prolegs, are always longer than they are wide, and are always densely covered in short or long setae (hair-like bristles). The head is extended during feeding in the lycaenids, but remains covered in the Limacodidae.
The saddleback caterpillar has urticating hair and aposematic colouring. Many animals feed on caterpillars as they are rich in protein. As a result, caterpillars have evolved various means of defense. Caterpillars have evolved defenses against physical conditions such as cold, hot or dry environmental conditions.
Megalopyge opercularis is a moth of the family Megalopygidae.It has numerous common names, including southern flannel moth for its adult form, and puss caterpillar, asp, Italian asp, fire caterpillar, woolly slug, opossum bug, [3] puss moth, tree asp, or asp caterpillar.
Aposematism is utilized by non-palatable species as a warning to predators that they represent a toxic danger. [3] Additionally, these insects tend to be relatively large, long-lived, active, and frequently aggregate. [2] Indeed, longer-lived insects are more likely to be chemically defended than short lived ones, as longevity increases ...
Euclea delphini Larva The front of a Spiny Oak Slug (Euclea delphinii). The larva is flattened and ovoid in outline, with spiny tubercules along the back and sides. These are venomous, producing symptoms in humans that vary from mild itching and burning to more serious reactions that require medical attention (Florida Poison Information Center 2015).
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When the eggs hatch, small yellow caterpillars emerge. As the caterpillars age, they molt five times (the fifth being into a pupa). Each instar is slightly different, but on their fifth and final instar, they become bright green with silver spots on their sides. They feed heavily on their host plant and can grow up to 3–4 inches long.