Gastroserica bisignata (Nomura, 1974) new combination

Figs. 4A–D, 24

Microserica bisignata Nomura, 1974: 98; Ahrens 2006a: 238; 2007b: 25; Ahrens & Bezděk 2016: 298.

Material examined. 1 ♂ “Mt. An-ma-shan Taichung, Taiwan 12th vii 1992 C. Yu leg.” (ZFMK) .

Gastroserica nitidipyga (Nomura, 1974) new combination

Figs. 4E–H, 25

Microserica nitidipyga Nomura, 1974: 98; Ahrens 2006a: 239; 2007b: 25; Ahrens & Bezděk 2016: 298.

Material examined. 1 ♂ [China] “ Cujiang, Huaping, Guangxi, 7.VI.1963, leg. Yang Jikun / LW-356” (CAU), 1 ♂ “China: Fujian Province; Mt. Liang-shan-ding, Wuping County, July 2- 13, 2009 local collectors Ankauf via Li Jingke 2010” (ZFMK) .