First nearctic record of Camilla atrimana (Diptera: Camillidae)

Members of Camillidae are among the least known Diptera in the Nearctic Region. Worldwide, this small family consists of four extant genera and approximately 40 species (Pape et al. 2011). Most species occur in the Palearctic and Afrotropical regions, and the family was not recorded in the New World until McAlpine (1960) noted the occurrence of Camilla glabra (Fallen) in Ottawa, Ontario. Camilla glabra is a widespread Palearctic species and its occurrence in the New World presumably represents an accidental introduction. The family was included in McAlpine (1987) on the basis of this population. Barraclough and Wheeler (1995) later described two endemic species of Afrocamilla Barraclough from Arizona and California and one of Camilla Haliday from Baja California, and Barraclough and Fitzgerald (2001) described an additional species of Afrocamilla from Colorado. Barraclough and Wheeler (1995) examined the status of C. glabra , noting that specimens were only collected in a small area of Ottawa between 1954 and 1965 and suggesting that this population is likely extirpated. Thus the current known Nearctic fauna of Camillidae consists of three species of Afrocamilla and one of Camilla. Here we record and key an additional species of Camilla in the Nearctic region. The specimens of Camilla atrimana Strobl reported here were collected with a Vortis suction sampler (Burkard Manufacturing Co. Ltd., Hertfordshire, UK) during an invertebrate survey of experimental grass plots at the Guelph Turfgrass Institute. They are deposited in the University of Guelph Insect Collection, Guelph, ON (DEBU); we also examined material from the Canadian National Collection of Insects, Arachnids & Nematodes, Ottawa, ON (CNCI).