Fever Fly vs Indian Green Lacewing

Side-by-side species comparison

Attribute Fever Fly Indian Green Lacewing
Scientific Name Dilophus febrilis Chrysoperla zastrowi
Order Diptera Neuroptera
Family Bibionidae Chrysopidae
Size 5-7 mm 13-19 mm wingspan
Habitat Farmland Farmland
Diet Nectar Feeders Predators
Regions Europe, Asia India, Sri Lanka, Southeast Asia
Conservation Least Concern Least Concern

Fever Fly

A small, shiny black march fly with spiny front tibiae used for digging. It was once believed to cause fevers in humans, hence its common name, though it is completely harmless.

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Did You Know?

Its spiny front legs are used by females to dig into soil for egg-laying, an unusual adaptation among flies.

Indian Green Lacewing

A green lacewing commonly found across the Indian subcontinent. Widely studied for biocontrol of cotton and rice pests.

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Did You Know?

It is mass-reared in Indian laboratories for release in cotton fields as a biological control agent.