North American Horntail vs Larch Sawfly
Side-by-side species comparison
| Attribute | North American Horntail | Larch Sawfly |
|---|---|---|
| Scientific Name | Tremex columba | Pristiphora erichsonii |
| Order | Hymenoptera | Hymenoptera |
| Family | Siricidae | Tenthredinidae |
| Size | 25–50 mm | 8-12 mm (adult) |
| Habitat | Woodlands | Forests |
| Diet | Wood Feeders | Omnivores |
| Regions | Eastern North America | North America, Europe |
| Conservation | Not Evaluated | Not Evaluated |
North American Horntail
A large horntail wasp found across eastern North America. It attacks dead and dying hardwood trees such as beech, maple, and elm.
Did You Know?
The parasitoid wasp Megarhyssa macrurus uses its extremely long ovipositor to reach horntail larvae deep inside wood.
Larch Sawfly
The most important defoliator of larch in North America. Periodic outbreaks can last for years and cause significant growth reduction.
Did You Know?
Indigenous peoples used outbreaks as a calendar marker, as they occurred with notable regularity.