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Description
Merry Christmas
Other view farm4.staticflickr.com/3733/11…

Quote from
lepidoptera.butterflyhouse.com…
en.wikipedia.org/wiki/Caterpil…

This caterpillar is green or brown, and has a series of long protuberances that it keeps waving about, so that it resembles two ants talking to each other. The caterpillar has always been found in the company of similar ants of the genus.

Many caterpillars are cryptically colored and resemble the plants on which they feed. They may even have parts that mimic plant parts such as thorns. Their size varies from as little as 1 mm to about 75 millimetres (3.0 in). Some look like objects in the environment such as bird droppings. Many feed enclosed inside silk galleries, rolled leaves or by mining between the leaf surfaces. Caterpillars of Nemoria arizonaria that grow in spring feed on oak catkins and appear green. The summer brood appear like oak twigs. The differential development is linked to the tannin content in the diet.

More aggressive self-defense measures are taken by some caterpillars. These measures include having spiny bristles or long fine hair-like setae with detachable tips that will irritate by lodging in the skin or mucous membranes.[2] However some birds (such as cuckoos) will swallow even the hairiest of caterpillars. Other caterpillars acquire toxins from their host plants that render them unpalatable to most of their predators. For instance,Ornate moth caterpillars utilize pyrrolizidine alkaloids that they obtain from their food plants to deter predators. [6] The most aggressive caterpillar defenses are bristles associated with venom glands. These bristles are called urticating hairs. A venom which is among the most potent defensive chemicals in any animal is produced by the South American silk moth genus Lonomia. Its venom is an anticoagulant powerful enough to cause a human to hemorrhage to death (See Lonomiasis).[7] This chemical is being investigated for potential medical applications. Most urticating hairs range in effect from mild irritation to dermatitis.

Description
Merry Christmas
Other view farm4.staticflickr.com/3733/11…

Quote from
lepidoptera.butterflyhouse.com…
en.wikipedia.org/wiki/Caterpil…

This caterpillar is green or brown, and has a series of long protuberances that it keeps waving about, so that it resembles two ants talking to each other. The caterpillar has always been found in the company of similar ants of the genus.

Many caterpillars are cryptically colored and resemble the plants on which they feed. They may even have parts that mimic plant parts such as thorns. Their size varies from as little as 1 mm to about 75 millimetres (3.0 in). Some look like objects in the environment such as bird droppings. Many feed enclosed inside silk galleries, rolled leaves or by mining between the leaf surfaces. Caterpillars of Nemoria arizonaria that grow in spring feed on oak catkins and appear green. The summer brood appear like oak twigs. The differential development is linked to the tannin content in the diet.

More aggressive self-defense measures are taken by some caterpillars. These measures include having spiny bristles or long fine hair-like setae with detachable tips that will irritate by lodging in the skin or mucous membranes.[2] However some birds (such as cuckoos) will swallow even the hairiest of caterpillars. Other caterpillars acquire toxins from their host plants that render them unpalatable to most of their predators. For instance,Ornate moth caterpillars utilize pyrrolizidine alkaloids that they obtain from their food plants to deter predators. [6] The most aggressive caterpillar defenses are bristles associated with venom glands. These bristles are called urticating hairs. A venom which is among the most potent defensive chemicals in any animal is produced by the South American silk moth genus Lonomia. Its venom is an anticoagulant powerful enough to cause a human to hemorrhage to death (See Lonomiasis).[7] This chemical is being investigated for potential medical applications. Most urticating hairs range in effect from mild irritation to dermatitis.