Adults are 20-35 mm in length and 7-12 mm in width. Their color is jet-black with a luster. The antennar have 11 segments. The base of the antennae are whitish with a blue-black color. The antennae of the males are 2.5 times their body length; the antennae of the females are 1.3 times their body length. The base of the eyltra does not have a granular structure. Each eyltron has about 20 white dots.
Asian Longhorned Beetle thus far has been attacking maple, horsechestnut, poplar, and other trees in the urban and suburban area of New York and Long Island. Timber, nursery stock, shade tree and maple syrup production are all at risk. According to the Empire State Forest Products Association, these industries employ more than 60,000 people. As an exotic, the beetle is expected to encounter few natural enemies. This factor will influence a rapid expansion of populations by natural means.
Asian Longhorn Beetle is a native insect of Northeast Asia. It is found throughout China except Xingjaiang, Tebit, Qinghai, Hainan and Taiwan. It is also recorded in Korea and Japan. ALB has just recently been found in Amityville and Brooklyn, New York.
Asian Longhorn Beetle alters the appearance of hardwood trees, especially maple and horsechestnut. Infested trees become unsightly, drop dead branches, and eventually die.