A taxonomic review of Microserica Brenske, 1894 from continental Asia (Coleoptera: Scarabaeidae: Melolonthinae: Sericini) Author Ahrens, Dirk 0000-0003-3524-7153 ahrens.dirk_col@gmx.de Author Liu, Wangang 0000-0003-4788-7967 liuwangang@ieecas.cn Author Lukic, Daniel 0000-0003-3524-7153 ahrens.dirk_col@gmx.de Author Bai, Ming 0000-0003-3524-7153 ahrens.dirk_col@gmx.de text Zootaxa 2023 2023-02-14 5241 1 1 115 http://dx.doi.org/10.11646/zootaxa.5241.1.1 journal article 264123 10.11646/zootaxa.5241.1.1 a71faa3e-24ed-473b-ab98-030b12ae9979 1175-5326 7639734 BBC27B5B-C657-469C-8F31-16E267B1DFF2 Microserica quadrimaculata group Key to species of Microserica quadrimaculata group on mainland Asia (♁♁): 1 Right paramere reduced in size compared to the left one, generally smaller or at least equal in size. Body short-oval...... 4 - Right paramere larger than the left one. Body elongate........................................................ 2 2 Dorsal surface of body simply shiny......................... Mic. vipinglangensis Ahrens, Lukic & Liu, new species - Dorsal surface of body dull or iridescent shiny.............................................................. 3 3 Dorsal surface black............................................................. Mic. panzona Ahrens, 2005 - Dorsal surface bicolored, elytra reddish brown.................................... Mic. soppongensis Ahrens, 2005 4 Body larger, ca 9 mm ; color uniformly reddish brown............... Mic. banlaoana Ahrens, Lukic & Liu, new species - Body smaller 7 mm ; and/or multicolored................................................................... 5 5 Elytra reddish brown, with more or less extended dark spots................................................... 8 - Elytra dark brown, without dark spots but unicolored. ........................................................ 6 6 Left paramere triangular (lateral view). Right paramere without tiny basal lobe................................................................................................. Mic. namnao Ahrens, Lukic & Liu, new species - Left paramere not triangular but subparallel over almost all its length (lateral view). Right paramere with a tiny basal lobe.. 7 7 Apex of the left paramere at apex bifid. ............................. Mic. viengvai Ahrens, Lukic & Liu, new species - Apex of the left paramere evenly broadely rounded. .............. Mic. chaiyaphum Ahrens, Lukic & Liu, new species 8 Apex of the right paramere exceeding by dimensions the one of the left................... Mic. larutensis Ahrens, 2003 - Apex of the right paramere not much exceeding the one of the left............................................... 9 9 Left paramere half as long as phallobase (lateral view)............................. Mic. quadripustulata Moser, 1915 - Left paramere less than a quarter as long as phallobase (lateral view).................. Mic. malaccensis (Brenske, 1893)