Check your trees regularly for these insects & diseases, look for the damage they can cause & help stop the killing of all these trees.
The Asian long horned beetle, or ALB is an invasive insect that feeds on a wide variety of tree in the United States, eventually killing them. The beetle is native to China & is in the wood-boring beetle family & was discovered in Ohio in 2011. The adult beetles are large, distinctive-looking insects measuring 1 to 1.5 inches. In length with long antennae. Their bodies are black with small white spots, & their antennae are banded in black & white.
Adult females chew depressions into the bark of various hardwood tree species. They lay an eggs about the size of a grain of rice, under the bark. Females can lay up to 90 eggs in their lifetime. The eggs hatch within in 2 weeks, the white larva bore into the tree feeding on the living tissue that carries nutrients & the layer responsible for new growth under the bark. After several weeks, the larva tunnels into the woody tree tissue, where it continues to feed and develop over the winter. As the larvae feed, they form tunnels in the tree trunks & branches. Sawdust like material, called frass, it's from the insect's burrowing, it can be found at the trunk & branch bases of infested trees.
Over the course of a year, beetle larvae develop into adults. The pupal stage lasts 13 to 24 days. After adult beetles emerge from the pupae, they chew their way out of the tree. , leaving round exit holes approximately three-eighths of an inch in diameter. Once they have exited a tree, they feed on the trees leaves & bark for 10 to 14 days before mating & laying eggs.
Emerald Ash Borer or EAB, is an invasive insect native to Asia, has killed untold millions of ash tree sin urban, rural & forested settings. The beetle was first identified in 2002 in southeast Michigan & Ontario. As of April 2014, EAB infestations were known to be present in 22 states as well as two Canadian provinces. Surveys continue & additional infestations will be found as EAB continues to invade North America. The EAB kills ash trees within three to five years of infestation. The adult are dark metallic green, 1/2 inch in length & 1/8 inch wide, and fly only from mid-May to September. Larvae spend the rest of the year developing beneath the bark.
The economics of treating ash trees with insecticides for EAB protections are complicated & depend on several factors. Tree size, health, location & value be considered, along with the cost of the insecticide & expense of application, the likelihood of success, & potential costs of removing the trees. The trees that exhibiting more than 50 percent canopy decline, thinning or debark are unlikely to recover even if treated.