Aconias Cameron, 1904

Genus Aconias Cameron, 1904 View in CoL View at ENA

Aconias Cameron, 1904: 345 View in CoL . Type species: Aconias spinitarsis Cameron, 1904 View in CoL . Monotypic.

Three species, Ac. albitarsis (Uchida, 1936) View in CoL , Ac. concavopropodeonus ( Uchida, 1952) View in CoL , and Ac. tarsatus ( Bridgman, 1881) View in CoL , have been recorded from Japan. Uchida (1952) notes that the Ac. albitarsis (Uchida, 1936) View in CoL and Ac. concavopropodeonus ( Uchida, 1952) View in CoL by the character states of propodeum, while this difference between both species is intraspecific variation. Sheng & Sun (2008) provided the key for world species and Ac. albitarsis View in CoL is separated from Ac. tarsatus (Bridgemann, 1881) View in CoL by the coloration of face (black in Ac. albitarsis View in CoL ; white in Ac. tarsatus View in CoL ) and hind tibia (black with pale coloured base in Ac. albitarsis View in CoL ; reddish brown with black apex in Ac. tarsatus View in CoL ). But the face of Ac. tarsatus View in CoL is misdescription and the coloration of hind tibia of Ac. tarsatus View in CoL is intraspecifically varied and the range of variation overlapped with Ac. albitarsis View in CoL . Thus, I conclude that Ac. albitarsis View in CoL is a junior synonym of Ac. tarsatus View in CoL (syn. nov.).

In this study, I newly describe two new species below. Both species are identified as this genus by Townes (1970) and are well accorded the character states of this genus. While the surface sculpture of hind femur and the remarkably long setae on it are largely differed from other species. The generic position of two new species should be reanalysed by future study.