''Electrostrymon pan'' is a

butterfly Butterflies are winged insects from the lepidopteran superfamily Papilionoidea, characterized by large, often brightly coloured wings that often fold together when at rest, and a conspicuous, fluttering flight. The oldest butterfly fossi ...

of the family

Lycaenidae Lycaenidae is the second-largest family (biology), family of butterflies (behind Nymphalidae, brush-footed butterflies), with over 6,000 species worldwide, whose members are also called gossamer-winged butterflies. They constitute about 30% of ...

."''Electrostrymon'' Clench, 1961"
at Markku Savela's ''Lepidoptera and Some Other Life Forms'' It was described by

Dru Drury Dru Drury (4 February 1725 – 15 January 1804) was a British collector of natural history specimens and an entomologist. He received specimens collected from across the world through a network of ship's officers and collectors including Henry ...

in 1773 from

Jamaica Jamaica is an island country in the Caribbean Sea and the West Indies. At , it is the third-largest island—after Cuba and Hispaniola—of the Greater Antilles and the Caribbean. Jamaica lies about south of Cuba, west of Hispaniola (the is ...

Description

Upperside: antennae black.

Thorax The thorax (: thoraces or thoraxes) or chest is a part of the anatomy of mammals and other tetrapod animals located between the neck and the abdomen. In insects, crustaceans, and the extinct trilobites, the thorax is one of the three main di ...

abdomen The abdomen (colloquially called the gut, belly, tummy, midriff, tucky, or stomach) is the front part of the torso between the thorax (chest) and pelvis in humans and in other vertebrates. The area occupied by the abdomen is called the abdominal ...

, and wings dark brown, or dark hair-coloured; the latter being furnished with two small tails like hairs, the extremities being white. Underside:

palpi Pedipalps (commonly shortened to palps or palpi) are the secondary pair of forward appendages among chelicerates – a group of arthropods including spiders, scorpions, horseshoe crabs, and sea spiders. The pedipalps are lateral to the chelicera ...

white. Breast greyish. Wings nearly the same colour as on the upperside. The posterior having two eyes on each at the abdominal corners; one being black with a red iris, the other grey and faint; above them is a small indented white line, pointing to a spot of the same colour placed at the middle of the anterior edge. Wingspan inches (32 mm).

References

Butterflies described in 1773 Eumaeini Lycaenidae of South America Taxa named by Dru Drury {{Eumaeini-stub