What is "chalcolestes"

Chalcolestes is a small genus of damselfly in the family Lestidae. They are commonly known as Willow Spreadwings. They are similar to the Spreadwings of the genus Lestes.

The name Chalcolestes comes from Greek: χαλχοσ copper and ληστησ predator.

The genus contains only two species:

• Chalcolestes parvidens – Eastern Willow Spreadwing
• Chalcolestes viridis – Willow Emerald Damselfly, Western Willow Spreadwing