Pine bark beetles create tunnels under the bark, and the shape and location of these tunnels can help you identify the species causing the infestation (see inset).

Bark beetles are the most destructive insects in western coniferous forests. It has been estimated that 90% of insect-caused tree mortality and more than 60% of the total insect-caused loss of …

Pupae–All beetles and weevils have a pupal stage, during which the adult winged form develops. Pupae can be in the soil or inside trees, seeds or other plant tissue or out in the open, e.g., on …

Back to the BEETLES. In the language of scientific classification, beetles are in the order Coleoptera, from the Greek words for “sheathed wing.” Most adult beetles have two pairs of …

These tiny reddish-brown to black beetles of at least three species are about 1/8th inch long. They are relatives of the better-known mountain pine beetle and ips beetles (found in pines and …

Bark beetles have hard, smooth, stout bodies and range from 1.3 to 2.9 mm in length, depending on gender and species. The majority of bark beetles are female; males are smaller and …

ark Beetles. Elm bark beetles are pests because they feed in the phloem of elms and spread the fungus that causes Dutch elm disease. The fungus kills the vascular system of elms, caus-ing …