Atychodea Reitter is re-described, and descriptions of the eight species included are given. Three of these were known and have been included in this genus earlier, two, from other genera, newly included in Atychodea, and three are new (A. portentosa sp. n. from Myanmar, and A. fedorenkoi sp. n. and A. vicina sp. n. from southern Vietnam). One species, A. lenticornis Reitter, is excluded from this genus and a new monotypic genus Amorphodea gen. n. is described to include this species. A key to the species of Atychodea is given. On the basis of a large set of morphological data, the relationships of all genera of the Tychini are considered, and Hesperotychus Schuster and Marsh and Tychomorphus Jeannel are synonymized with the genus Tychus Leach. A key to genera of Tychini is given. A complete catalogue of the tribe, with 20 new combinations and 12 revised combinations, with data on species distribution, is also provided.
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Vol. 134 • No. 1