Mountain Flathead Mayfly vs Elegant Stag Beetle

Side-by-side species comparison

Attribute Mountain Flathead Mayfly Elegant Stag Beetle
Scientific Name Cinygmula ramaleyi Odontolabis elegans
Order Ephemeroptera Coleoptera
Family Heptageniidae Lucanidae
Size 7-10 mm 35-85 mm
Habitat Mountains Mountains
Diet Omnivores Sap Feeders
Regions North America Philippines, Indonesia
Conservation Least Concern Not Evaluated

Mountain Flathead Mayfly

An alpine mayfly restricted to high-elevation cold streams in the Rocky Mountains. Nymphs feed on diatom films on boulder surfaces.

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Did You Know?

This species cannot survive in water temperatures above 15 degrees Celsius.

Elegant Stag Beetle

A large Southeast Asian stag beetle with smooth, curved mandibles. Males show dramatic polymorphism in mandible size.

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Did You Know?

Small males mimic females in appearance to sneak matings without being challenged by larger males.