The present paper opens a series of additions to a recently published review of the Oriental genus Clytellus Westwood, 1853. The following species are described as new: C. waterstradti sp. n., C. periculosus sp. n. (both Brunei), C. sarawakiensis sp. n. (Malaysia, Sarawak), C. hefferni sp. n., C. jenisi sp. n. (both Malaysia, Sabah), C. lingafelteri sp. n. (Philippines), and C. javanus sp. n. (Indonesia, Java). The previously unknown males of C. tatianae Miroshnikov, 2014 and C. monilis Holzschuh, 2011, both characterized by some external sexual features missing in the females, are also described. The records of the former species of these two in Brunei, of C. malayanus Hayashi, 1977, in Java, and of C. methocoides Westwood, 1853, in the extreme north of Jiangxi Province, China not only significantly extend the known distribution ranges of those species, but also the reports of two latter taxa, together with that of C. javanus sp. n., considerably enlarge the distribution area of the entire genus both to the south and north. The previous record of C. malayanus in Borneo is confirmed. Some morphological features of certain populations in the Philippine C. benguetanus Schultze, 1920, in particular, from the Sibuyan Island (Romblon Province), are revealed, and a range of general individual variability in this species is outlined. Additional material of C. methocoides from Hong Kong and Jiujiang City shows a coloration typical of the Chinese populations, as described earlier by the author. Резюме. Настоящая работа открывает серию дополнений к недавно опубликованному обзору ориентального рода Clytellus Westwood, 1853. Описаны следующие новые виды: C. waterstradti sp. n., C. periculosus sp. n. (оба Бруней), C. sarawakiensis sp. n. (Малайзия, Саравак), C. hefferni sp. n., C. jenisi sp. n. (оба Малайзия, Сабах), C. lingafelteri sp. n. (Филиппины) и C. javanus sp. n. (Индонезия, Ява). Также описаны ранее не известные самцы C. tatianae Miroshnikov, 2014 и C. monilis Holzschuh, 2011, характеризующиеся некоторыми наружными половыми признаками, отсутствующими у самок. Указано, что находки The material treated in this paper belongs to the following institutional and private collections: BM-Bishop Museum (Honolulu, USA);