Jordan Journal of Biological Sciences, 12(5), 657-658. How to Get Rid of Western Conifer Seed Bugs. Most of their hosts are pines, but they also consume seeds of Douglas-firs and several species of spruces and firs. Hizal E, 2012. That isn't saying that we won't have more snow. WCS bugs plague much of the North American continent, and the great state of Colorado is no exception. Birds and bugs and 72 F today, so I believe spring is finally here! Its summer habitat is among pine trees, Douglas firs and other types of cone-producing trees. Lucky for me that it was deceased because I read that they spray like skunks. The Western Conifer Seed Bug isn’t seen very much during the summer months. Western conifer seed bugs have long narrow heads with a substantial beak underneath which they use to feed on pine trees. AKA: Stink Bug This is the first bug I've seen this year so it had to be my blip. Western Conifer Seed Bug (Leptoglossus occidentalis) Identification. Known for their noisy flying and pungent smells, western conifer seed bugs can become a nuisance once they gain entry inside a home. Adults can be upwards of 16-20mm in length. The main diet of this bug comes from the seeds of the cones. I'll remember not to get so close to a live one! Western conifer seed bugs are the ultimate generalists, for in their native range in the forests of western North America, they feed on about 40 species of conifers. Looking like a weird hybrid between a beetle and a locust, WCS bugs … What are western conifer seed bugs? When disturbed, the western conifer seed bug will actually produce a pine like odor. Western Conifer Seed Bug. The adult is about 3/4 inch (16-20 mm) in length and is dull brownish. Western Conifer Seed Bugs are a type of "true bug", or Heteroptera. In this article, we will discuss a few methods to effectively help control these invasions and infestations. The western conifer seed bug belongs to the family Coreidae, commonly called leaf-footed bugs, and like many members of this family, it has a flattened, leaf-like expansion on the hind legs. Western conifer seed bugs are brown in color with mild patterning to their wings. First Record of the Western Conifer Seed Bug, Leptoglossus occidentalis Heidemann, 1910 (Hemiptera, Coreidae), from Palestine.