Indian Olive Mayfly vs Banded Blackfly

Side-by-side species comparison

Attribute Indian Olive Mayfly Banded Blackfly
Scientific Name Baetis conservatus Simulium ornatum
Order Ephemeroptera Diptera
Family Baetidae Simuliidae
Size 5-8 mm 2-4 mm
Habitat Rivers & Streams Rivers & Streams
Diet Omnivores Herbivores
Regions South Asia Europe
Conservation Least Concern Least Concern

Indian Olive Mayfly

A small olive-colored mayfly found in Himalayan streams and foothill rivers. Nymphs are agile swimmers adapted to moderate currents.

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Did You Know?

It is one of the most commonly encountered mayfly species in Indian freshwater biomonitoring studies.

Banded Blackfly

A widespread European black fly species complex found in diverse stream types. Larvae filter-feed from silken pads attached to trailing vegetation and stones.

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Did You Know?

Recent DNA studies revealed that what was considered one species is actually a complex of several cryptic species.