Yellow Drake Mayfly vs Short-winged Mold Beetle

Side-by-side species comparison

Attribute Yellow Drake Mayfly Short-winged Mold Beetle
Scientific Name Ephemera lutea Pselaphus heisei
Order Ephemeroptera Coleoptera
Family Ephemeridae Staphylinidae
Size 18-25 mm 1.5-2 mm
Habitat Rivers & Streams Underground
Diet Detritivores Detritivores
Regions North America Europe
Conservation Least Concern Least Concern

Yellow Drake Mayfly

One of the largest mayflies in eastern North America with a pale greenish body. Nymphs live in burrows in the silty bottoms of clean streams.

💡

Did You Know?

Adults live only a few hours but their emergence creates one of the most anticipated fishing events of the year.

Short-winged Mold Beetle

A tiny rove beetle with clubbed antennae that feeds on mites in leaf litter and soil. Its short wing cases and ant-like body make it distinctive.

💡

Did You Know?

It possesses specialized antennal clubs covered in sensory pits used for detecting prey in total darkness.