Western Conifer Seed Bug
From Bugwoodwiki
Hagle, S.K; S. Tunnock; K.E. Gibson; and C.J. Gilligan. 1987. Field Guide to Diseases and Insect Pests of Idaho and Montana Forests. U.S. Department of Agriculture, Forest Service. State and Private Forestry, Northern Region. Missoula, Montana. Reprint 1990. Publication Number R1-89-54.
Contents |
Hosts
Douglas-fir, all western pines.
Distribution
Throughout Idaho and Montana.
Damage
insect pierces cone scales and feeds upon developing seeds. Entire contents of seed may be removed. Cones may develop normally but produce no viable seed.
Identification
Nymphs are evident through the summer months, are active, and brightly colored (fig. 143). They reach maturity by late August. Seed bugs are also called leaf-footed bugs--so called because of the flattened tibia on the hind leg (fig. 144). Adults are conspicuous and are strong fliers. They may be seen congregated on branch tips or cones on the sunny side of the tree. They are about 1 inch long, grayish brown with distinctive orange and black markings on upper abdomen when in flight. Adults overwinter and are evident again in early spring.
Similar damages
Similar damage may be caused by a few other sucking insects, but none is as prevalent as the seed bug.
References
- Furniss, R. L., and V. M. Carolin. 1977. Western For. Insects. USDA Forest Serv., Misc. pub. 1339, 654 p., illus.
- Hedlen, A. F., H. O. Yates III, D. C. Tovar, B. H. Ebel, T. W. Koerber, and E. P. Merkel. 1980. Cone and seed insects of North American conifers. Can. Forest Serv., USDA For. Serv., Sec. de Agric. y Rec. Hid., Mexico. 122 p., illus.
