White-Gloved Howdy vs Japanese Narrow-Winged Damselfly
Side-by-side species comparison
| Attribute | White-Gloved Howdy | Japanese Narrow-Winged Damselfly |
|---|---|---|
| Scientific Name | Isonychia sadleri | Mnais costalis |
| Order | Ephemeroptera | Odonata |
| Family | Isonychiidae | Calopterygidae |
| Size | 12-16 mm | 50-65 mm |
| Habitat | Rivers & Streams | Forests |
| Diet | Omnivores | Omnivores |
| Regions | North America | East Asia, Japan |
| Conservation | Least Concern | Least Concern |
White-Gloved Howdy
Named for the white tips of its forelegs resembling gloves. Nymphs are powerful swimmers found in fast-flowing Appalachian streams.
Did You Know?
The distinctive white-tipped forelegs are visible even in flight, giving rise to the fanciful common name.
Japanese Narrow-Winged Damselfly
A beautiful damselfly endemic to Japan, known as 'niko-nico-kawatombou.' Males come in two forms: orange-winged territorial males and clear-winged sneaker males. Found along clean forest streams.
Did You Know?
The two male forms represent an evolutionary stable strategy: orange-winged males defend territories while clear-winged males sneak matings by mimicking females.