South American Grain Stem Sawfly vs Western Boxelder Bug
Side-by-side species comparison
| Attribute | South American Grain Stem Sawfly | Western Boxelder Bug |
|---|---|---|
| Scientific Name | Cephus fumipennis | Boisea rubrolineata |
| Order | Hymenoptera | Hemiptera |
| Family | Cephidae | Rhopalidae |
| Size | 7-10 mm | 11-14 mm |
| Habitat | Farmland | Woodlands |
| Diet | Seed Feeders | Seed Feeders |
| Regions | Europe, Central Asia | Western North America |
| Conservation | Least Concern | Least Concern |
South American Grain Stem Sawfly
A slender black stem sawfly with smoky wings and yellow abdominal bands. It attacks cereal grain stems in parts of Europe and Asia.
Did You Know?
Like other cephid stem borers, the larva constructs a silken cocoon inside the hollowed-out stem base where it overwinters before pupating in spring.
Western Boxelder Bug
A red and black bug very similar to the eastern boxelder bug but found in western North America. It forms large overwintering aggregations on buildings and fences near boxelder trees. It is a nuisance pest but causes no structural damage.
Did You Know?
When crushed, it stains fabrics and surfaces with a reddish-orange dye from its body fluids, which is why it should be vacuumed rather than squashed when found indoors.