This pest
is established in the eastern United States and is spreading
slowly into the Midwest. Adult Oriental beetles vary from
light brown to black with mottling on the wing covers.
Adult Oriental beetles.
They are
active from late June through August; slightly earlier than Japanese
beetle. They are active at night and can be monitored using a
pheromone-baited trap placed on the ground.
The females lay eggs in the ground at the bases
of bushes, and larvae feed directly on blueberry roots.
Roots damaged by Oriental beetle.
Larvae are very
similar to those of Japanese
beetle, but the pattern of hairs on the posterior segment differs,
with two parallel rows of 10 to 16 hairs per row.