S. Mahunka szerk.: Folia Entomologica Hungarica 59. (Budapest, 1998)

ROVARTANI KÖZLEMÉNYEK LIX 1998 pp.135-140 Three new Tenthredo species from Yunan (Hymenoptera: Tenthredinidae) A. Haris and L. Roller Three new Tenthredo species from Yunan (Hymenoptera: Tenthredinidae) - Three new Tenthredo species as T. elongatissima sp. n., T. yunanensis sp. n. and T. cylindriformis sp. n. are described hereunder and compared to T. appendicella Malaise, 1945, T. cyanata Konow, 1898, T. ßatopleura Singh et Saini, 1987, T. cretata Konow, 1898 and T. cylindrical Rohwer, 1911. INTRODUCTION The fauna of Yunan - one of the largest southern provinces of China - is a special mixture of East Palearctic and Oriental elements, although Yunan belongs to the Oriental zoogeographical region. Malaise's (1945) key is the most important comprehensive study on the Tenthredinidae fauna of this region. Since 1945 only a few papers have been published on this topic. The book by Gangrou et al. (1992) is the most significant study on the Tenthredinid pests of China - including Yunan - which contains few Tenthredo species. Many new species of the above mentioned genus were described, mainly from the neighbouring India (Muche 1982, 1983; Singh 1985; Singh et al. 1985a, 19856; Singh et Saini 1986, 1987a, 19876, 1987c, 1988a, 19886, 1988c; Togashi 1987) and some further species from Bhutan and Nepal (Muche 1983, 1986). Here we describe three new species of the genus Tenthredo as a contribution to the knowledge of this very diverse group of sawflies. DESCRIPTION AND DISCUSSION OF SPECIES Tenthredo elongatissima sp. n. Female. Head, antennae, thorax black. Body very slender and very elongated. Head strongly contracted behind the eyes, hind margin with carina and deeply emarginated.