Western conifer seed bug
Leptogolossus occidentalis

Type of Insect: true bug
Size: 18-20 mm
Overall Color: brown
Larval Foods: conifer cones and seeds, especially Douglas-fir
Adult Foods:
Larval Type: nymph
status: common
Description: large brown bugs that try to invade houses in large numbers in the fall. When molested they produce a strong somewhat unpleasant odor

Kingdom: Animalia (Animals)
Phylum: Arthropoda (Arthropods)
Class: Hexapoda (Insects)
Order: Hemiptera (true bugs)
Family: 16 Coreidae
Genus: Leptogolossus
Species: occidentalis