Sphaeroderma Stephens, 1831

Lee, Chi-Feng, 2023, Four new species of Sphaeroderma Stephens (Coleoptera, Chrysomelidae, Galerucinae, Alticini) from Taiwan, with discussion on genus boundaries based on S. flavonotatum Chujo and S. jungchani sp. nov., ZooKeys 1185, pp. 1-19 : 1

publication ID	https://dx.doi.org/10.3897/zookeys.1185.112099
publication LSID	lsid:zoobank.org:pub:5B12796B-2102-4994-8D33-53FAD1A1B763
persistent identifier	https://treatment.plazi.org/id/4BD579CD-BCBA-513A-9135-30AE163D7703
treatment provided by	ZooKeys by Pensoft
scientific name	Sphaeroderma Stephens, 1831
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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 View Figure 3 , 5 View Figure 5 ) were collected from Shei-Pa National Park, but only one of them has longitudinal antennal calli (Fig. 2A View Figure 2 ) with poorly delimited supracallinal sulci. The other two have typical characters for Sphaeroderma (Fig. 2B-E View Figure 2 ). 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 View Figure 3 , 5 View Figure 5 ) which look like members of Meishania Chen & Wang, 1980: 1.1-1.2 × longer and wide [spherical bodies (Fig. 8 View Figure 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 View Figure 4 , 6C, D View Figure 6 ) [aedeagus with one pair of small endophallic sclerites in S. flavonotatum (Fig. 9C, D View Figure 9 ) and S. jungchani sp. nov. (Fig. 7C, D View Figure 7 )], gonocoxae with a transverse basal sclerite connected with apical sclerites (Figs 4G View Figure 4 , 6G View Figure 6 , 7G View Figure 7 ) [gonocoxae with only apical sclerites in S. flavonotatum (Fig. 9G View Figure 9 )], and abdominal ventrite VIII in females strongly sclerotized and short speculum (Figs 4E View Figure 4 , 6E View Figure 6 , 7E View Figure 7 ) [abdominal ventrite VIII in females membranous except apical margin scleritozed and long speculum in S. flavonotatum (Fig. 9E View Figure 9 )].