Green stoneflies

Definition

A family of small to medium-sized stoneflies (order Plecoptera) characterized by green or yellow-green body coloration in adults and larvae, reduced wing venation, and typically predatory or omnivorous feeding habits. Members of this family are distinguished from other stonefly families by their bright coloration, relatively short cerci, and habitat preference for cool, well-oxygenated streams and springs.

Etymology

From the characteristic green coloration of adults and nymphs; family name Chloroperlidae derives from Greek chloros (green) + perla (stonefly genus, from Latin perla, pearl).

Example

Swifter (Chloroperla) and Alloperla species are common green stoneflies found in North American mountain streams, where their bright green nymphs are important predators of midge larvae and other small aquatic insects.

Synonyms

• Chloroperlidae

Related Terms

• Stoneflies
• Plecoptera
• Perlidae
• aquatic insects
• stream ecology
• benthic macroinvertebrates
• Cerci
• wing venation

Usage Notes

The common name refers specifically to family Chloroperlidae, not to all green-colored stoneflies; some Perlidae and Perlodidae may also appear greenish. Adults often emerge in spring and are sometimes mistaken for caddisflies due to their moth-like flight and held-wing posture. Nymphs are useful as bioindicators of high water quality because they require cold, oxygen-rich habitats with minimal pollution.