The Oak Longicorn Beetle looks like a rough chip of bark, with two dark hair tufts near the base of its . Its recorded range is in eastern Asia. The larvae damage oak logs used to grow shiitake mushrooms in Japan and Korea.
Appearance
Appearance
Adults are about 0.75–1 in (19–25 mm) long. The dark brown body has a bumpy surface and a pair of conspicuous black hair tufts near the front of the wing covers.
Where it lives
Typical habitats
deciduous forests
felled oak logs
shiitake log yards
Range
The documented range includes the Korean Peninsula, China, Japan, and the Russian Far East.
Preferred conditions
In its East Asian range, adults visit cut hardwood logs, and larvae develop under their bark. Oaks are important host trees.
Behavior
Diet
Adults chew bark on young twigs, while larvae feed beneath the bark of dead or recently cut hardwood.
Activity
Adults are often found on cut oak and other hardwood. Activity dates vary with climate across its broad East Asian range.
Overwintering
In Japan, adults shelter in leaf litter through winter and become active again in spring.
Life cycle
Breeding season
In Japan, adults emerge in fall, overwinter, and lay eggs from about April through June.
Reproduction
A female chews a notch in bark and places an egg beneath it. The larva makes a gallery under the bark and later forms a there.
Conservation
IUCN Red List
NENot Evaluated·Not yet assessed
Threats
In Japan, larvae can damage shiitake logs by feeding beneath the bark.