Giant Stonefly vs Sinuate-winged Damselfly
Side-by-side species comparison
| Attribute | Giant Stonefly | Sinuate-winged Damselfly |
|---|---|---|
| Scientific Name | Pteronarcys californica | Tatocnemis sinuatipennis |
| Order | Plecoptera | Odonata |
| Family | Pteronarcyidae | Platycnemididae |
| Size | 30-50 mm body | 35-42 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Herbivores | Omnivores |
| Regions | North America | Madagascar |
| Conservation | Least Concern | Data Deficient |
Giant Stonefly
Large aquatic insects whose nymphs require pristine, cold, oxygen-rich streams. Adults are poor fliers and stay near water. Important food source for trout.
Did You Know?
Stonefly nymphs are so sensitive to water pollution that their presence is used by scientists as a living indicator of water quality — no stoneflies means polluted water.
Sinuate-winged Damselfly
An endemic damselfly with distinctively sinuate or wavy-edged wings, a feature unique among Malagasy odonates. Males have a metallic green thorax and pale blue abdomen.
Did You Know?
The unusual wavy wing shape is found in no other damselfly genus, making Tatocnemis instantly recognizable in the field.