Rhyparus denticollis Fairmaire, 1893

Minkina, Ÿukasz & Anichtchenko, Alexander, 2022, Studies on genus Rhyparus Westwood, 1845 (Coleoptera: Scarabaeidae: Aphodiinae) with description of two new species from Southeast Asia, Baltic Journal of Coleopterology 22 (1), pp. 175-183 : 181

Rhyparus denticollis Fairmaire, 1893

( Fig. 13 )

Examined material. 1 ex.: Indonesia, Sumatra, Palembang [ NMPC] ; 1 ex.: Indonesia: Sumatra, Aceh, G. Leuser Nat. Pk., Ketambe Res. Sta., xi. 1989, D. C. Darling, Malaise Tp. 350m, Primary Rainforest , 3°41´N, 97°39´E, H. & A. Howden collection [ PBCS] ; 1 ex.: Indonesia, West Sumatra, Mt. Sanggul, cca 35km N of Payakumbuh Landai vill. Env. , 1250­1400m alt., 19.xii.2014, leg. Stanislav Jakl [ Ÿ MCN] ; 1 ex.: Malaysia: Sabah, Balu, Punggul Resort env. 24.vi.­ 1.vii.1996, vegetation debris and forest floor litter accumulated around large treens near river [ ISEA] ; 1 ex.: Malaysia, N Borneo, Sabah, Keningau distr., Trus Modi Mt. , 1160m., 18.viii.2012, leg. A. Klimenko [ Ÿ MCN] [photographed specimen] ; 1 ex.: Malaysia, Borneo , Sabah, Kinabalu N.P., Poring, 500m ., at light, 2.xii.1997, leg. D. Grimm [ Ÿ MCN] .

Short comment. Previously known from Java and Borneo. Additional records for Borneo. First records for Sumatra. Specimens from Borneo and Sumatra are almost identique. Only one very weak difference were observed in caudal bulbs structure, i.e. sinuation between median and internal protrusions is slightly less distinct in population from Sumatra. In opinion of authors such small feature is not enough to describe this population as separate taxa.

Figures

Figs 13–16. Dorsal views and abdominal apexes: 13 – dorsal view of Rhyparus denticollis, 14 – dorsal view of R. verrucosus (Bali Island), 15 – abdominal apex of R. verrucosus (holotype, Sumatra), 16 – abdominal apex of R. jakli sp. nov. (scale lines: 1.0 mm).