Thistle Gall Wasp vs Large Bloody-nosed Beetle
Side-by-side species comparison
| Attribute | Thistle Gall Wasp | Large Bloody-nosed Beetle |
|---|---|---|
| Scientific Name | Isocolus scabiosae | Timarcha goettingensis |
| Order | Hymenoptera | Coleoptera |
| Family | Cynipidae | Chrysomelidae |
| Size | 1.5-2.5 mm | 8-13 mm |
| Habitat | Meadows | Meadows |
| Diet | Gall Makers | Herbivores |
| Regions | Europe, Western Asia | Central and Western Europe |
| Conservation | Least Concern | Least Concern |
Thistle Gall Wasp
A minute gall-inducing wasp that forms swellings on knapweed flower heads. It has been studied as a potential biocontrol agent for invasive knapweeds.
Did You Know?
A single flower head can contain dozens of tiny gall chambers, each housing one larva.
Large Bloody-nosed Beetle
A somewhat smaller relative of Timarcha tenebricosa, with a similarly rounded, convex, black body and fused wing cases. It shares the characteristic reflex bleeding behavior of its genus.
Did You Know?
Adults are entirely flightless because their hind wings have been completely reduced and their elytra are fused together.