Gossamer-winged butterflies

Definition

A common name for the butterfly family Lycaenidae, comprising over 6,000 species worldwide and constituting approximately 30% of known butterfly species. The name refers to the delicate, often iridescent wing scaling characteristic of many members. The family includes coppers, blues, hairstreaks, and elfins, with adults typically small to medium-sized and larvae frequently associated with ants in complex mutualistic relationships.

Etymology

From 'gossamer' (Middle English, fine spider silk or filmy substance) + 'winged,' describing the thin, translucent quality of the wings; the family name Lycaenidae derives from Greek lykaios, 'wolf-like,' originally applied to the type genus Lycaena (coppers).

Example

The common blue (Polyommatus icarus) and the gray hairstreak (Strymon melinus) are familiar North American gossamer-winged butterflies whose larvae often secrete sugary substances to attract tending ants.

Synonyms

• Lycaenidae

Related Terms

• Lycaenidae
• blues
• Coppers
• Hairstreaks
• elfins
• myrmecophily
• Lepidoptera
• Papilionoidea
• wing scaling
• iridescence

Usage Notes

Used interchangeably with the scientific family name Lycaenidae; 'gossamer-winged' emphasizes the morphological trait of delicate wing structure rather than phylogenetic relationships. The term encompasses four recognized subfamilies (Lycaeninae, Theclinae, Polyommatinae, and Miletinae), though some classifications split these further. Not to be confused with 'gossamer' used for spider silk or the informal 'gossamer moth' for certain bombycoids.