Pale-Footed Birch Sawfly vs Galapagos Flightless Katydid
Side-by-side species comparison
| Attribute | Pale-Footed Birch Sawfly | Galapagos Flightless Katydid |
|---|---|---|
| Scientific Name | Profenusa thomsoni | Nesoecia cooksoni |
| Order | Hymenoptera | Orthoptera |
| Family | Tenthredinidae | Tettigoniidae |
| Size | 3-5 mm | 40-60 mm |
| Habitat | Woodlands | Heathland |
| Diet | Herbivores | Herbivores |
| Regions | Europe, introduced to North America | South America |
| Conservation | Least Concern | Vulnerable |
Pale-Footed Birch Sawfly
A tiny black sawfly whose larvae create distinctive blotch mines within birch leaves. Mined leaves develop brown, papery patches.
Did You Know?
Heavy infestations can cause over 80 percent of birch leaves to become mined, giving trees a scorched appearance by late summer.
Galapagos Flightless Katydid
A large flightless katydid endemic to the Galapagos Islands. Part of the archipelagos remarkable pattern where 74% of endemic orthopterans have lost the ability to fly.
Did You Know?
In the Galapagos, 74% of endemic grasshoppers and crickets have evolved flightlessness — the same pattern seen in many island insect populations worldwide.