Amiserica Nomura, 1974

Ahrens, Dirk, Liu, Wangang, Pham, Phu Van & Fabrizi, Silvia, 2021, An overview on the genus Amiserica Nomura, 1974 (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), Zootaxa 5050 (1), pp. 1-63 : 5

Amiserica Nomura, 1974

Amiserica Nomura, 1974: 81 (type species by monotypy: Amiserica rufidula Nomura, 1974 ); Ahrens 2004 b: 126, 2007c: 11.

Diagnosis. Roughly, currently Amiserica comprises species with an antennal club composed of three lamellae (both sexes), with a metafemur which has a serrated line adjacent to the anterior margin, and with a serrated line beside the dorsal margin of metatibia (at least in basal half).

Among Amiserica , we may distinguish the following species groups:

1 Apex of metatibia moderately deeply concavely truncate...................................................... 2

- Apex of metatibia deeply and sharply truncate. (Himalaya)......................... Amiserica costulata (Frey) group

2 Dorsal surface of body sparsely setose or nearly glabrous...................................................... 3

- Dorsal surface of body densely and erectly setose............................................................ 7

3 Dorsal surface of body sparsely setose and generally multi-coloured. (NE India, Indochina)................................................................................................ Amiserica insperata (Brenske) group

- Dorsal surface of body apart from minute setae in punctures and a few very single longer setae on sides of elytra glabrous and generally unicoloured.................................................................................. 4

4 Body surface dull. Each paramere with a membraneous sacculus at apex. Antennal club in male with 3 or 4 antennomeres. Antenna composed by 10 antennomeres. Metafemur with serrated line adjacent to anterior margin. (E-Asia).................................................................................... Amiserica rufidula (Nomura) group

- Body surface shiny. Parameres without a membraneous sacculus at apex. Antennal club in male with 3 antennomeres. Antenna composed by 9 antennomeres............................................................................ 5

5 Metafemur without serrated line adjacent to anterior margin. Posterior margins of metafemur serrated.................. 6

- Metafemur with serrated line adjacent to anterior margin. Posterior margins of metafemur smooth, not serrated........................................................................................... Amiserica gulinqin group

6 Phallobase with a narrow apical dorsomedian process. Parameres asymmetric and strongly bilobate. ( China)......................................................................................... Amiserica guizhouensis group

- Phallobase without a narrow apical dorsomedian process. Parameres symmetric and simple, not bilobate. ( China)..................................................................................... Amiserica venxianensis group

7 Parameres and phallobase strongly asymmetric. ( China)................................... Amiserica jizuensis group

- Parameres and phallobase symmetric. (Himalaya)................................ Amiserica argentata (Frey) group