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Revision of the genus trichochermes with descriptions of five new species from china homoptera psyllidae



Revision of the genus trichochermes with descriptions of five new species from china homoptera psyllidae



Entomotaxonomia 7(4): 301-315



The genus Trichochermes Kirkaldy (1904) originally contains seven described species, but since T. bicolor Kuwayama, and T. hyalina Kuwayama have been transferred to Petalolyma Scott (1882) recently (Yang and Li, 1984), and the South African species T. insleyae Capener (1973) seems not to be a member of this genus, there are only five species left. The type species T. walkeri (Forster, 1849) is widely distributed in Europe, and all the others are described by M. M. Loginova: T. certus Loginova (1964) from European part of USSR, T. grandis Loginova (1965) from Russian Far East, and T. gemellus Loginova (1974) from Mongolia. Although T. grandis has been recorded in China (Kuwayama and Miyatake, 1971), Korea (Miyatake, 1971) and Japan (Baba and Miyatake, 1971), but it seems to be species complex. In the present paper the genus Trichochermes has been revised, and compared with the genus Petalolyma, and five new species are described from China: T. sinicus Yang et Li, sp. nov., host plants: Rhamnus rugulosa Hemsl. and Cotoneaster zabelii Schneid. This new species is common and widely distributed in Northwest and North China. It is close to T. grandis Loginova, but differs in the depression and maculation of vertex, and in the form of genal cones, and also in the genitalia of both sexes; T. utilis Yang et Li, sp. nov., host plant: R. utilis Dcue. This new species differs markedly from others by larger size and the darker coloration of body. Somewhat allied to T. sinicus Yang et Li. T. huabeianus Yang et Li, sp. nov., host plant: Rhamnus sp. This new species is similar to T. walkeri (Forster). T. jilinanus Yang et Li, sp. nov. host plants: R. davusia, Spiraea pubeecens Twg., Tilia amurensis Rupr., Acer mandshuricum Maxim. and Salix taraikensis Kimura. This new species is allied to T. sinicus Yang et Li. but differs by the depression and maculation of the vertex, and by the pale median suture, and also by the yellowish band on the dorsal surface of thorax. T. laricis Yang et Li, sp. nov., host plant: Larix olgensis Henry. T. gemellus Loginova. The specimens of Shanxi Prov. recorded by Kuwayama and Miyatake (1971) determined as T. grandis Loginova was similar to this species.

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Accession: 006340476

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