Three-punctured Ground Beetle vs South American Grain Stem Sawfly
Side-by-side species comparison
| Attribute | Three-punctured Ground Beetle | South American Grain Stem Sawfly |
|---|---|---|
| Scientific Name | Harpalus affinis | Cephus fumipennis |
| Order | Coleoptera | Hymenoptera |
| Family | Carabidae | Cephidae |
| Size | 9-12 mm | 7-10 mm |
| Habitat | Farmland | Farmland |
| Diet | Seed Feeders | Seed Feeders |
| Regions | Europe, western Asia | Europe, Central Asia |
| Conservation | Least Concern | Least Concern |
Three-punctured Ground Beetle
A common medium-sized metallic green or bronze ground beetle with distinctive punctures on its elytra. It is abundant in agricultural fields across Europe and important for weed seed consumption.
Did You Know?
It has been observed carrying seeds back to its burrow to eat, behavior more commonly associated with ants than beetles, and may help disperse some plant species.
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.