Dark Hendrickson Mayfly vs Rhinoceros Cockroach

Side-by-side species comparison

Attribute Dark Hendrickson Mayfly Rhinoceros Cockroach
Scientific Name Leptophlebia cupida Macropanesthia rothi
Order Ephemeroptera Blattodea
Family Leptophlebiidae Blaberidae
Size 8-12 mm 50-60mm
Habitat Rivers & Streams Grasslands
Diet Detritivores Detritivores
Regions North America Oceania
Conservation Least Concern Least Concern

Dark Hendrickson Mayfly

A dark-bodied spring mayfly important to trout anglers in the Northeast. Nymphs inhabit leaf packs and debris in slow to moderate stream sections.

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Did You Know?

It often emerges alongside Ephemerella subvaria, and the two species together form the famed Hendrickson hatch.

Rhinoceros Cockroach

A large burrowing cockroach related to the giant burrowing cockroach but with a more northern distribution. It is wingless and lives in deep soil burrows. It feeds on leaf litter pulled underground.

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Did You Know?

It digs permanent burrows up to a meter deep and emerges only at night to drag fallen leaves underground.