Oides decempunctata is a leaf beetle of East and Southeast Asia that feeds on grapevines; it isn't found in the US. Each wing cover has five black spots—ten in all, which is what its scientific name means. In Korean vineyards, both the grubs and the adults chew grape leaves.
Appearance
- Appearance
- Each wing cover has five black spots, while the shield behind the head has none. The legs are yellow, and the last three segments of each antenna are black. Each belly segment has a pair of black spots.
Where it lives
- Typical habitats
- Vineyards
- Range
- Native to most of China, Taiwan, Korea, Russia, and Vietnam, Laos, Thailand, and Cambodia. It is not known from the US.
- Preferred conditions
- Lives wherever its grape-family food plants grow.
Behavior
- Diet
- Grubs and adults both eat the buds and leaves of grapevines and related vines, chewing holes and notches. Heavy feeding can strip leaves down to the veins.
- Overwintering
- Spends the winter as eggs, which females lay from mid-July into October.
Life cycle
- Larva
- In Korean vineyards the grubs hatch in late May or early June and feed until mid-July. They then go into the soil to pupate for about a month.
- Caterpillar food plants
- Grapevines, including cultivated grape (Vitis vinifera). Other reported hosts include a wild grape (Vitis flexuosa) and Himalayan ivy (Hedera nepalensis).
Conservation
- IUCN Red List
- NENot EvaluatedNot yet assessed
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