Western Fishfly vs Malagasy Dobsonfly

Side-by-side species comparison

Attribute Western Fishfly Malagasy Dobsonfly
Scientific Name Neohermes filicornis Neochauliodes madagascariensis
Order Megaloptera Megaloptera
Family Corydalidae Corydalidae
Size 40-55 mm wingspan 40-60 mm wingspan
Habitat Rivers & Streams Rivers & Streams
Diet Predators Predators
Regions Western North America Madagascar
Conservation Least Concern Data Deficient

Western Fishfly

A western North American fishfly with feathery antennae and brownish wings. Adults are attracted to lights near streams where their larvae develop.

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Did You Know?

Fishflies are distinguished from dobsonflies by their feathery antennae and lack of massive mandibles in males.

Malagasy Dobsonfly

A large, brown-winged insect with broad wings held tent-like over the body at rest. Males may have elongated mandibles. Larvae are aquatic and known as hellgrammites.

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Did You Know?

The aquatic larvae are considered indicators of clean water quality, as they cannot tolerate polluted streams.