Orthemis sibylla, a junior synonym of O. ambirufa (Odonata: Libellulidae)

Orthemis sibylla is shown to be a junior synonym of O. ambirufa, based on a comparison of the holotype male of O. ambirufa with voucher specimens in the UMMZ identified as O. sibylla by Ris and specimens of this species from French Guiana and Venezuela in the RWG collection. Diagnostic characters of the male holotype…

Critical species of Odonata in western Africa

Western Africa—defined as the tropical area from Cameroon westwards—probably has the richest odonate fauna in Africa, particularly the region of (and around) the Cameroon highlands. This region is home to many relict and endemic species, such as the continent’s only representatives of the families Amphipterygidae and Perilestidae. Previous selections of threatened West African Odonata have…

Acanthagrion aepiolum sp. nov. from South America (Odonata: Coenagrionidae)

The new species – holotype ♂, Bolivia, Department of Santa Cruz, Ñuflo de Chavez Prov., stream 11.8 km E of San Javier (16°17′S, 62°37′W), 16 November 1998, leg. K.J. Tennessen; deposited in El Museo de Historia Natural “Noel Kempff Mercado”, Santa Cruz, Bolivia – has been confused with Acanthagrion ascendens. Abdominal segment 10 in males…