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Spilosoma virginica is a species of moth in the subfamily Arctiinae. As a caterpillar, it is known as the yellow woolly bear or yellow bear caterpillar. As an adult, it is known as the Virginian tiger moth.
The caterpillar varies in color, but is typically consistent in its coloration in a single specimen, without odd tufts of different-colored hair or separately colored heads.
It has a diet of a wide range of low-growing plants, including ground cover like grass and clover. The larvae are defoliators, skeletonizing the leaves they feed on, but only the late summer batch of caterpillars is plentiful enough to do much damage to crops. This species tends to have two to three life cycles per year, with one hibernating for the winter in temperate climates.[2]
The adult moth tends to tent its wings over its back, rather than sitting with them spread. It is white with a darker-colored abdomen, but without the obvious, darker eyes of its close cousin the agreeable tiger moth. It is not poisonous, but some people may have an allergic reaction to the bristles on its body.[2]
The female is slightly larger than the male in larva form, and as an adult finds a mate by extruding an organ that emits a pheromone which the male can smell. The male, which unlike the female has the large, feathered antennae characteristic of pheromone-using moths, flies zigzag search patterns, eventually homing in on a female. After mating, he goes off to find other females, while the female stops to lay between 20 and 100 eggs in a single layer on the underside of a leaf. The larvae stay together when very young, but become solitary as they gain size.[2]
Spilosoma virginica is a species of moth in the subfamily Arctiinae. As a caterpillar, it is known as the yellow woolly bear or yellow bear caterpillar. As an adult, it is known as the Virginian tiger moth.
La Diacrisie de Virginie (Spilosoma virginica) est une espèce de lépidoptères (papillons) de la famille des Erebidae et de la sous-famille des Arctiinae. Elle est répandue en Amérique du Nord.
L'imago de Spilosoma virginica est un papillon d'une envergure d'environ 50 mm, qui possède des ailes blanches avec quelques points noirs. La tête et le thorax sont blancs, tandis que l'abdomen est blanc et jaune, avec des points noirs disposés en bandes longitudinales. Les pattes arrière sont noires et jaunes, alors que les autres sont noires et blanches. Les antennes bipectinées sont blanches du côté dorsal et noires du côté ventral.
La chenille est densément couverte de longues soies, dont la couleur peut être blanche, jaune, orange ou rougeâtre.
L'espèce est répandue à travers les États-Unis et le Canada, d'une côte à l'autre. Elle est plus commune à l'est[1].
La chenille est polyphage et se nourrit de plantes herbacées et d'arbustes.
Chenille se nourrissant de Renouée du Japon.
La Diacrisie de Virginie (Spilosoma virginica) est une espèce de lépidoptères (papillons) de la famille des Erebidae et de la sous-famille des Arctiinae. Elle est répandue en Amérique du Nord.
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