Artaxa subflava is a yellow from East Asia whose caterpillars carry tiny irritating hairs that cause itchy rashes. It's a well-known nuisance in Japan and Korea but doesn't live in the US.

Appearance

Appearance
A deep yellow moth with a wide, dark brown chevron across each forewing and usually two black dots near the wingtips. The wingspan is about 1.2–1.6 in (30–40 mm); females are larger than males.

Where it lives

Typical habitats
  • Broadleaf woods
  • Orchards
  • Towns and parks
Range
Found throughout Japan, in Korea and China, and in the southeastern Russian Far East. It does not occur in North America.

Behavior

Overwintering
Has one generation a year; caterpillars hatched in summer spend the winter in leaf litter and finish growing in spring.

Life cycle

Caterpillar food plants
In Japan, caterpillars eat the leaves of more than 100 kinds of plants, especially cherry, plum, pear, apple, oak, and chestnut.

Cautions

Cautions
The caterpillars' irritating hairs, only about 0.004 in (0.1 mm) long, also end up on egg masses, cocoons, and the tail tuft of adult moths, so even adults can cause a rash that itches for several weeks.

Name and classification

About the name
Formerly called Euproctis subflava.

Conservation

IUCN Red List
NENot EvaluatedNot yet assessed

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Artaxa subflava — identification & habitat | Moeyo