Sphaeroderma Stephens, 1831

Sphaeroderma Stephens, 1831: 328. Type species: Altica testacea Fabricius, 1775, subsequently designated by Maulik (1926).

Argosomus Wollaston, 1868: 152. Type species: Argosomus epilachnoides Wollaston, 1868, subsequently designated by Konstantinov and Vandenberg (1996). Synonymized by Scherer (1961).

Musaka Bechyné, 1958: 91. Type species: Sphaeroderma freyi Bechyné, 1955. Synonymized by Scherer (1961).

Kimotoa Gruey, 1985: 125. Type species: Argopus splendens Gressitt & Kimoto, 1963, by original designation. Synonymized by Konstantinov and Prathapan (2008).

Notes.

Three new species with oblong bodies (Figs 3, 5) were collected from Shei-Pa National Park, but only one of them has longitudinal antennal calli (Fig. 2A) with poorly delimited supracallinal sulci. The other two have typical characters for Sphaeroderma (Fig. 2B-E). This suggests that the supracallinal sulci are not diagnostic.

The new species of Sphaeroderma from Shei-Pa National Park can be assigned to a species group (= S. hsui species group) that can be separated from other species of Sphaeroderma (such as S. flavonotatum and S. jungchani sp. nov.) by their oblong bodies (Figs 3, 5) which look like members of Meishania Chen & Wang, 1980: 1.1-1.2 × longer and wide [spherical bodies (Fig. 8), as long as wide in S. flavonotatum and S. jungchani sp. nov.]; abdominal ventrites V without internal median ridge in males (abdominal ventrites V with internal median ridge in males of S. flavonotatum and S. jungchani sp. nov.), aedeagus without endophallic sclerites (Figs 4C, D, 6C, D) [aedeagus with one pair of small endophallic sclerites in S. flavonotatum (Fig. 9C, D) and S. jungchani sp. nov. (Fig. 7C, D)], gonocoxae with a transverse basal sclerite connected with apical sclerites (Figs 4G, 6G, 7G) [gonocoxae with only apical sclerites in S. flavonotatum (Fig. 9G)], and abdominal ventrite VIII in females strongly sclerotized and short speculum (Figs 4E, 6E, 7E) [abdominal ventrite VIII in females membranous except apical margin scleritozed and long speculum in S. flavonotatum (Fig. 9E)].