Black Headed Birch Sawfly vs Japanese Silk Moth
Side-by-side species comparison
| Attribute | Black Headed Birch Sawfly | Japanese Silk Moth |
|---|---|---|
| Scientific Name | Craesus alniastri | Antheraea yamamai |
| Order | Hymenoptera | Lepidoptera |
| Family | Tenthredinidae | Saturniidae |
| Size | 7-9 mm | Wingspan 110-150 mm |
| Habitat | Woodlands | Indoors |
| Diet | Herbivores | Herbivores |
| Regions | Europe | Japan, Korea, China |
| Conservation | Least Concern | Not Evaluated |
Black Headed Birch Sawfly
A medium-sized sawfly with a dark head and orange body. Larvae are greenish-blue with black heads and feed communally on birch and alder leaves.
Did You Know?
When a predator approaches, the entire colony of larvae simultaneously rears up and thrashes, making the group appear larger and more threatening.
Japanese Silk Moth
A large wild silk moth native to Japan with striking yellow-brown wings bearing prominent eyespots. Its silk was historically used to produce high-quality tensan fabric.
Did You Know?
Its silk, called tensan, is naturally green-tinged and was reserved for Japanese imperial garments.