Amiserica costulata
Creators: name: Ahrens, Dirk
name: Liu, Wangang
name: Pham, Phu Van
name: Fabrizi, Silvia
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Melolonthidae
Amiserica
Amiserica costulata

description: Amiserica costulata (Frey) group
Checklist of the species:
Amiserica breviflabellata Ahrens, 2004 a: 136.
Amiserica costulata (Frey, 1969): 518 (Lasioserica).
Amiserica krausei Ahrens, 2004 a: 130.
Amiserica longiflabellata Ahrens, 2004 a: 134.
Amiserica patibilis Ahrens, 2004 a: 137.
Amiserica recurva Ahrens & Fabrizi, 2009b: 258.
Amiserica surda Ahrens, 2004 a: 139.
Amiserica taplejungensis Ahrens, 2004 a: 133.
Key to species of the Amiserica costulata (Frey) group (♂♂)
1 Metasternum caudally strongly elevated, medially concave; with concavity very finely and densely punctate and densely erectly setose. Serrated line of metatibia widely interrupted and incomplete........................................... 2
- Metasternum caudally flat, not elevated, median concavity longitudinal and weak, not more densely punctate than the rest of the metasternum. Serrated line of metatibia complete......................................................... 5
2 Lateral margins of pronotum strongly curved. Left paramere strongly widened, interiorly with a sharp tooth........................................................................................ A. taplejungensis Ahrens, 2004
- Lateral margins of pronotum moderately curved. Left paramere narrow, interiorly without tooth....................... 3
3 Left paramere strongly shortened, its basal lobe wider; basal lobe of right paramere distinctly longer.................................................................................................... A. krausei Ahrens, 2004
- Left paramere at maximum only little shorter than the right one, its basal lobe narrower; basal lobe of right paramere distinctly shorter.............................................................................................. 4
4 Left paramere nearly subequal in length to the right one........................... A. recurva Ahrens & Fabrizi, 2009
- Left paramere little shorter than the right one............................................ A. costulata (Frey, 1969)
5 Protarsal claws symmetrical. Antennal club much longer than remaining antennomeres combined................................................................................................ A. longiflabellata Ahrens, 2004
- Protarsal claws asymmetrical, interior claw hook-like developed. Antennal club not longer than remaining antennomeres combined............................................................................................... 6
6 Anterior margin of labroclypeus not reflexed, its anterior angles strongly rounded, anterior margin slightly concavely sinuate medially................................................................... A. breviflabellata Ahrens, 2004
- Anterior margin of labroclypeus strongly reflexed........................................................... 7
7 Eyes larger (ratio diameter/interocular width: 0.88). Anterior margin of labroclypeus separated by an indistinct incision from the lateral margin of clypeus. Parameres shorter and wider................................... A. surda Ahrens, 2004
- Eyes smaller (ratio diameter/interocular width: 0.67). Anterior margin of labroclypeus separated by a distinct incision from the lateral margin of clypeus. Parameres narrow and long..................................... A. patibilis Ahrens, 2004
description: Published as part of Ahrens, Dirk, Liu, Wangang, Pham, Phu Van & Fabrizi, Silvia, 2021, An overview on the genus Amiserica Nomura, 1974 (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), pp. 1-63 in Zootaxa 5050 (1) on pages 59-60, DOI: 10.11646/zootaxa.5050.1.1, http://zenodo.org/record/5560512