The genus Plotina Lewis (Coleoptera: Coccinellidae), with descriptions of four new species from China

摘要

The genus Plotina Lewis from China is reviewed and four new species are described: P. octomaculata Wang et Ren, sp. nov., P. menghaiensis Wang, Ren et Chen, sp. nov., P. daweishanensis Wang et Ren, sp. nov., P. signatella Wang et Ren, sp. nov. Plotinia quadrioculata Kovaf, 1995 is reported from China for the first time. All species are described and illustrated, and a key to the known species is given. The genus Plotina Lewis (Coleoptera: Coccinellidae: Sticholotidinae) was proposed by Lewis (1896) for the placement of one species from Japan, P. versicolor Lewis, which is anomalous and has a striking combination of three colors on its dorsal surface. Mader (1931) examined a cotype of P. versicolor and referred the species to the tribe Coelopterini (=Pharini), and Korschefsky (1931) also listed the genus in the same tribe in his catalogue. Mader (1955a) described P. muelleri from Fujian, China, and Kovaf (1995) added the third species, P. quadrioculata from Thailand. The genus Plotina and related genera (Sphaeroplotina Miyatake, 1969, Haemoplotina Miyatake, 1969, Palaeoneis Crotch, 1874 (=Ballida Mulsant, 1850), Paraplotina Miyatake, 1969 and Buprestodera Sicard, 1911) were studied by Miyatake (1969). Later Miyatake (1994) proposed the tribe Plotinini for the genus Plotina and related genera originally placed in the tribe Sticholotidini.