A new species of <i>Ludovicius</i> from China (Diptera: Dolichopodidae)

The genus Ludovicius Rondani is characterized by the antennal scape rather thick but pedicel reduced and small, and arista usually one-segmented and nearly bare. The Palaearctic species of the genus Ludovicius were revised by Parent (1938) and Stackelberg (1941). Yang (1996a, b, 1998a–c, 1999a, b), Yang et al. (1998, 2002) and Yang & Saigusa (1999, 2001) added 22 species to the fauna of China. These 22 are mainly distributed in central and south-west China. Up to now, there are 12 known species from the Palaearctic Realm (Negrobov 1991, Grichanov 2000) and 15 known species from the Oriental Realm (Dyte 1975, Yang & Saigusa 2001, Yang et al. 2002). Yang and Saigusa (2001) reviewed the Chinese species of the genus Ludovicius, which were classified in 8 species groups. In the present paper, the species of Ludovicius emeishanus-group from China are reviewed, and one species is described as new to science. The type specimens are deposited in the Insect Collection of China Agricultural University, Beijing. The following abbreviations are used: acr acrostichal, ad anterodorsal, av anteroventral, dc dorsocentral, LI fore leg, LII mid leg, LIII hind leg, pd posterodorsal.