Acharia stimulea

Acharia stimulea, commonly known as the Saddleback Caterpillar, is a species of moth in the family Limacodidae. This moth is primarily known for its larval form, which is notable for its distinctive appearance and its ability to deliver a painful sting. The species is found in eastern North America, ranging from New England to Mexico.

Description

The adult Acharia stimulea moth has a wingspan of approximately 20 to 28 mm. The moths are generally brown with a darker brown or blackish mark on the forewings. However, it is the larval stage, or caterpillar, that is most recognizable. The caterpillar is green with brown at either end and has a prominent white, saddle-shaped mark on its back, which gives the species its common name. It is also covered in spines that are connected to venom glands, which can deliver a painful sting to humans upon contact.

Habitat and Distribution

Acharia stimulea is found in a variety of habitats, including forests, meadows, and gardens. It has a wide range in eastern North America, from the New England states south to Florida and west to Texas and Mexico. The caterpillar feeds on a variety of host plants, including many common garden plants and trees such as oak, elm, and cherry.

Life Cycle

The life cycle of Acharia stimulea includes four stages: egg, larva (caterpillar), pupa, and adult (moth). Females lay eggs on the underside of host plant leaves. The eggs hatch into caterpillars, which are the stage most commonly encountered by humans. After feeding and growing, the caterpillar pupates, forming a cocoon in which it transforms into a moth. The species can have multiple generations per year, especially in the warmer parts of its range.

Human Interaction

The Saddleback Caterpillar is best known for its sting, which can cause symptoms ranging from a painful rash to nausea in sensitive individuals. The spines on the caterpillar's body can break off and embed in the skin, releasing venom. While the sting is not usually dangerous, it can be very painful. It is advised to handle these caterpillars with care and to use protective gloves if necessary.

Conservation

Currently, there are no specific conservation concerns for Acharia stimulea. The species is relatively widespread and common within its range. However, like many species, it could be affected by habitat loss and the use of pesticides.

See Also

• Moth
• Caterpillar
• Limacodidae

Acharia stimulea Resources
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