Oligota chrysopyga

Distinguished from other Oligota species by the golden-yellow (chrysopyga = 'golden rump') coloration of the abdomen and pygidium. The species is small-bodied (approximately 1.5–2.5 mm), with short elytra typical of Staphylinidae that expose most of the abdomen. Accurate identification requires examination of male genitalia and other microscopic characters.

Native range appears to be tropical regions of the Americas, including Brazil, Jamaica, Grenada, Cayman Islands, French Guiana, and Chile. Established populations occur on the Galápagos Islands. Introduced to: Europe (France, Great Britain, Switzerland), Canada (New Brunswick), and USA (Florida). Additional records from Africa (Gabon, Zaire, South Africa, Seychelles, Mascarenes, Madagascar), Asia (Sri Lanka, Malaysia, China), and Oceania (Samoa, Tahiti, New Caledonia) suggest either wider native range or multiple introduction events.

Documented as an introduced species in temperate regions of Europe and North America, though economic or ecological significance of these introductions has not been assessed. The species is occasionally recorded in synanthropic environments.

• Oligota parvaOverlaps in size and general habitus; distinguished by abdominal coloration and male genitalia structure
• Other Hypocyphtini generaSimilar small size and compact form; requires examination of tarsal formula and mouthpart structure for separation

• rove beetle
• Staphylinidae
• Aleocharinae
• introduced species
• cosmopolitan distribution

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life