any of a group of insects in the gossamer-winged butterfly family, Lycaenidae (order Lepidoptera), that are distinguished by hairlike markings on the ... Found on http://www.britannica.com/eb/a-z/h/5
Any of a group of small butterflies, related to blues and coppers. Hairstreaks live in both temperate and tropical regions. Most of them are brownish or greyish-blue with hairlike tips streaked with white at the end of their hind wings. (Genera Callophrys and other related genera, family Lycaenidae.) Found on https://www.encyclo.co.uk/local/21221