Several species described in the genus Acalolepta Pascoe, 1858 were analysed. Acalolepta aesthetica (Olliff, 1890); A. artensis (Montrouzier, 1861); A. blairi (Breuning, 1935); A. bolanica (Aurivillius, 1925); A. gracilis (Breuning, 1938); A. puncticeps (Breuning, 1938); A. riouensis (Aurivillius, 1924); A. sculpturata (Aurivillius, 1924); A. timorensis (Breuning, 1935) and A. tugelensis Breuning, 1970
are transferred to the subgenus Dihammus Thomson, 1864. Dihammus bolanicus Aurivillius, 1925 (currently, A. bolanica) is considered as senior synonym of A. parabolanica Breuning, 1980 n. syn. Dihammus timorensis Breuning, 1935 (currently, A. timorensis) is considered as senior synonym of Dihammus similis Breuning, 1938 n. syn. (currently, A. similis) both described from Timor. Its description is updated. New morphological data on A. (Dihammus) longicornis keyensis Breuning, 1965 and
A. (Dihammus) longicornis timorlautensis (Breuning, 1935) are furnished. A. (Dihammus) longicornis
barsevskisi n. ssp. from Babar (Moluccas, Indonesia) and A. (Dihammus) sexplagiata n. sp. from Sulawesi
(Indonesia) are described. Orsidis dispar Pascoe, 1866 (currently, A. dispar) is considered as senior synonym of Orsidis unicolor Fisher, 1935 n. syn. (currently, A. unicolor), both described from Borneo. Metopides Pascoe, 1866 is considered as senior synonym of Pilohammus Vitali, 2019 n. syn. and three species are transferred from Acalolepta, resulting in the following new combinations: Metopides mixtus (Hope, 1841); Metopides ampliatus (Gahan, 1888) and Metopides nivosus (White, 1858). Jeanvoinea annulipes Pic, 1934 is recognised as senior synonym of Dihammus flocculatus paucisetosus Gressitt, 1938
n. syn. (currently, Acalolepta flocculata paucisetosa). Jeanvoinea annulipes annulipes is recorded from China, Laos and India for the first time. Jeanvoinea annulipes flocculata (Gressitt, 1935) n. comb. is introduced for the Taiwanese subspecies. The male genitalia of this genus are shown for the first time.
Jeanvoinea borneensis Breuning, 1961 is transferred to the Bornean genus Pseudodihammus Breuning, 1936 and Pseudodihammus borneensis (Breuning, 1961) n. comb. is introduced.