Western Pygmy-Blue
Brephidium exilis
This record describes Brephidium exilis (species). Recorded family: Lycaenidae. Recorded order: Lepidoptera.
Identification and Appearance
The western pygmy blue (Brephidium exilis or Brephidium exile) is one of the smallest butterflies in the world and the smallest in North America. It has reached Hawaii, as well as the Persian Gulf, including eastern Saudi Arabia, Bahrain and the United Arab Emirates. Upperside copper brown with dull blue at the bases of both wings. Underside of hindwing is copper brown with white at the base; fringe mostly white; 3 small black spots near base;...
Wikipedia reference for Brephidium exilis: https://en.wikipedia.org/wiki/Brephidium exilis.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Lepidoptera (Butterflies and Moths)
- Superfamily
- Papilionoidea
- Family
- Lycaenidae (Gossamer-winged Butterflies)
- Subfamily
- Polyommatinae
- Tribe
- Polyommatini
- Genus
- Brephidium (Pygmy-Blues)
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
About Butterflies and Moths: the wider group
Order-level background for Lepidoptera, the group containing Brephidium exilis. Species-specific details appear above.
Group overview
Lepidoptera includes approximately 180,000 described species of butterflies and moths. Moths outnumber butterflies roughly 10:1. The monarch butterfly's eastern population has declined by more than 80% since the mid-1990s, and the western population by over 95% since the 1980s. The IUCN lists the migratory monarch as Vulnerable.
Ecological role of the group
Butterflies and moths are essential indicators of ecosystem health. As caterpillars, they are a primary food source for birds - a single nest of blue tit chicks requires ~10,000 caterpillars. Adult moths pollinate many night-blooming plants.
Economic and practical significance of the group
Lepidoptera are critical pollinators. In Europe, grassland butterfly species have declined by almost 50% since the early 1990s. In the UK, three-quarters of butterflies are in decline. In the U.S., five butterfly species have gone extinct since 1950, with 29 listed as endangered.
Recorded sources for this group: IUCN Red List, Xerces Society, USFWS, PNAS, WWF. Imported estimates may describe particular regions or reporting periods.
