Western Bumble Bee vs South American Grain Stem Sawfly
Side-by-side species comparison
| Attribute | Western Bumble Bee | South American Grain Stem Sawfly |
|---|---|---|
| Scientific Name | Bombus occidentalis | Cephus fumipennis |
| Order | Hymenoptera | Hymenoptera |
| Family | Apidae | Cephidae |
| Size | 10-22 mm | 7-10 mm |
| Habitat | Mountains | Farmland |
| Diet | Nectar Feeders | Seed Feeders |
| Regions | Western North America | Europe, Central Asia |
| Conservation | Vulnerable | Least Concern |
Western Bumble Bee
A once-common bumble bee of western North America that has experienced dramatic population declines since the late 1990s. They nest underground in abandoned rodent burrows.
Did You Know?
Their catastrophic decline is linked to a pathogen accidentally spread through commercial bumble bee rearing facilities.
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.