Harlequin Cockroach vs Brown Drake Mayfly

Side-by-side species comparison

Attribute Harlequin Cockroach Brown Drake Mayfly
Scientific Name Neostylopyga rhombifolia Ephemera simulans
Order Blattodea Ephemeroptera
Family Blattidae Ephemeridae
Size 25-30 mm 14-20 mm
Habitat Underground Rivers & Streams
Diet Omnivores Omnivores
Regions Southeast Asia, Hawaii, Mexico North America
Conservation Least Concern Least Concern

Harlequin Cockroach

A strikingly patterned cockroach with dark brown and yellow markings on its body. It is a peridomestic species found in tropical Asia and has spread to warm urban areas.

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Did You Know?

Its bold geometric color pattern makes it one of the most visually distinctive household cockroach species.

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.