Maladera (subgen. Hemiserica Brenske, 1894)

Hemiserica Brenske, 1894: 11 (Type species (by monotypy): Hemiserica nasuta Brenske, 1894); Ahrens 2004a: 342.

Rhynchosymmela Frey, 1974: 120 (type species, by monotypy: Rhynchosymmela pallida Frey, 1974); syn by Ahrens 2004b: 32.

Maladera (subgen. Hemiserica): Ahrens & Fabrizi 2016: 250.

Key to species of Maladera (sbg. Hemiserica) occurring in China (³³):

1 Body size larger,> 9 mm. Dorsoapical median emargination of phallobase deep and narrow........................... 3

1’ Body size smaller, <8 mm. Labroclypeus finely and sparsely punctate, surface flat. Dorsoapical median emargination of phallobase shallow........................................................................................ 2

2 Ventral lobe of left paramere longer, distinctly exceeding the lobiform dorsal lobe................................................................................................ Maladera rufopaca Ahrens, Fabrizi & Liu, sp. n.

2’ Ventral lobe of left paramere shorter, only little exceeding the lobiform dorsal lobe........................................................................................... Maladera fangchengensis Ahrens, Fabrizi & Liu, sp. n.

3 Labroclypeus coarsely and rugosely punctate, surface strongly convex. Basal piece of left paramere cylindrical; its narrow apical process fine and weakly bent (Fig. 7B). Right paramere weakly reflexed (lateral view, Fig. 7C)....................................................................................... Maladera hsui Ahrens, Fabrizi & Liu, sp. n.

3’ Labroclypeus finely punctate, surface nearly flat. Basal piece of left paramere conically narrowed; its narrow apical process thicker and strongly bent (Fig. 7F). Right paramere strongly reflexed (lateral view, Fig. 7G)........................................................................................ Maladera eshanensis Ahrens, Fabrizi & Liu, sp. n.