Giant Stonefly vs Indian Olive Mayfly
Side-by-side species comparison
| Attribute | Giant Stonefly | Indian Olive Mayfly |
|---|---|---|
| Scientific Name | Pteronarcys californica | Baetis conservatus |
| Order | Plecoptera | Ephemeroptera |
| Family | Pteronarcyidae | Baetidae |
| Size | 30-50 mm body | 5-8 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Herbivores | Omnivores |
| Regions | North America | South Asia |
| Conservation | Least Concern | Least Concern |
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.
Indian Olive Mayfly
A small olive-colored mayfly found in Himalayan streams and foothill rivers. Nymphs are agile swimmers adapted to moderate currents.
Did You Know?
It is one of the most commonly encountered mayfly species in Indian freshwater biomonitoring studies.