Malagasy Dobsonfly vs Brown Drake Mayfly

Side-by-side species comparison

Attribute Malagasy Dobsonfly Brown Drake Mayfly
Scientific Name Neochauliodes madagascariensis Ephemera simulans
Order Megaloptera Ephemeroptera
Family Corydalidae Ephemeridae
Size 40-60 mm wingspan 14-20 mm
Habitat Rivers & Streams Rivers & Streams
Diet Predators Omnivores
Regions Madagascar North America
Conservation Data Deficient Least Concern

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.

Brown Drake Mayfly

A large brownish mayfly with mottled wings that produces dramatic evening hatches on trout streams. Nymphs burrow in sandy and silty streambeds.

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Did You Know?

Brown drake hatches occur over just a few days each year, creating some of the most spectacular dry-fly fishing of the season.