Small Minnow Mayfly vs White-Gloved Howdy

Side-by-side species comparison

Attribute Small Minnow Mayfly White-Gloved Howdy
Scientific Name Callibaetis ferrugineus Isonychia sadleri
Order Ephemeroptera Ephemeroptera
Family Baetidae Isonychiidae
Size 7-11 mm 12-16 mm
Habitat Ponds & Lakes Rivers & Streams
Diet Detritivores Omnivores
Regions North America North America
Conservation Least Concern Least Concern

Small Minnow Mayfly

A mottled brown mayfly common in still waters across North America. Nymphs are excellent swimmers that mimic small minnows.

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Did You Know?

It can produce up to three generations per year in warm climates.

White-Gloved Howdy

Named for the white tips of its forelegs resembling gloves. Nymphs are powerful swimmers found in fast-flowing Appalachian streams.

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Did You Know?

The distinctive white-tipped forelegs are visible even in flight, giving rise to the fanciful common name.