Rhyparus, Westwood, 1845

Key to species of Rhyparus View in CoL with modified pygidium and last abdominal ventrite in females

1. Punctures in basal part of lateral pronotal intercostae much smaller - fine. Second pair of elytral costae distinctly widened in apical half.Apexofpygidiumoffemalesvolcano-shapedwithroundedtop.PapuaNewGuinea.............. sepikensis Stebnicka, 1998 View in CoL

–– Punctures in basal part of lateral pronotal intercostae always much larger - at least moderately coarse. Second pair of elytral costae distinctly widened only shortly before apex............................................................... 2

2. Upper side (especially head and pronotum) always covered by yellowish, dusty pattern. Elytral intercostae 1 - 4 with three distinct rows of punctures. Pygidium of females weakly modified as a member of the group – in the shape of obtuse traingle. Borneo................................................................................... approximans Fairmaire, 1893 View in CoL

–– Upper side never covered by yellowish, dusty pattern. Elytral intercostae 1 -4 with two distinct rows of punctures, in part of species third, median rows observed, but punctures there are always much finer than in median rows.................... 3

3. More distinctly shiny: pronotal costae and intercostae always similarly distinctly shiny, elytral costae always distinctly shiny, elytral intercostae usually similarly distinctly shiny, rarely less shiny than elytral costae, very rarely subopaque. Lateral lobes of pronotum weakly developed. Viti Levu Island, Vanua Levu Island, Buru Island....................................... 4

–– Less distinctly shiny: pronotal costae from subopaque to distinctly shiny, pronotal intercostae always less distinctly shiny than costae,frommattto subopaque, elytralcostae fromsubopaquetodistinctly shiny, elytralintercostaealwayslessdistinctlyshiny thancostae,frommatttomoderatelyshiny.Laterallobesofpronotumweaklytomoderatelydeveloped....................... 5

4. Punctation of basal half of median intercostae of pronotum quite regularly distributed, weakly concentrated along median line. Anterior lobes of pronotum almost triangular. Fourth elytral intercostae is least steep in the group, seems to be distinctly widened before apex. Apex of pygidium of females volcano-shaped with sinuate top. Buru Island.................................................................................... buruensis Minkina, Anichtchenko, Vasiljeva & Skelley, 2022

–– Punctation of basal half of median intercostae of pronotum very distinctly concentrated along median line. Anterior lobes of pronotumrounded.Fourthelytralintercostae isnotsosteep, seemingto be weakly widened before apex. Apexof pygidiumof females volcano-shaped with truncate top. Viti Levu and Vanua Levu Islands......................................................................................................... fijiensis Minkina, Anichtchenko, Vasiljeva & Skelley, 2022

5. Posterior lobes of pronotum widely rounded, with moderately distinct sinuation between anterior and posteriori lobes. Posterior lobes of pronotum quite distinctly higher than anterior. Elytral suture before apex always with distinct, elevated protuberance. Apex of pygidium of females mountain-shaped with rounded top. Mindanao Island....................................................................................................... paraphilippinensis Ochi & Kakizoe, 2021 View in CoL

–– Posterior lobes of pronotum triangular to widely rounded; when posterior lobes of pronotum widely rounded sinuation between anterior andposterior lobes veryweaktoweak.Posterior lobesof pronotumthe sameheightasanterior,rarely weaklyhigher thananterior(onlyin R. sulawesiensis View in CoL sp. nov.). Elytral suture before apex at most with weak protuberance................. 6

6. Lateral lobes of pronotum and sinuation between them very weakly to weakly developed. Punctation of pronotal median intercostae distinctly concentrated along median line.............................................................. 7

–– Lateral lobes of pronotum and sinuation between them weakly to moderately developed. Punctation of pronotal median intercostae irregularly distributed, at most only partialy, not distinctly concentrated along median line................... 8

7. Posterior lobes of pronotum widely rounded. Sinuation between anterior and posterior lobes very weak. Basal mesotarsomeres aslongastwonextcombined.Apexof pygidiumof femalesdistinctlytriangular.BacanIsland........................................................................................... bacanensis Minkina, Anichtchenko, Vasiljeva & Skelley, 2022

–– Posterior lobes of pronotum widely triangular. Sinuation between anterior and posterior lobes weak. Basal mesotarsomeres as long as next three combined. Apex of pygidium of females volcano-shaped with sinuate top. New Guinea................................................................................ stebnickae Minkina, Anichtchenko, Vasiljeva & Skelley, 2022

8. Posterior lobes of pronotum widely rounded. Sinuation between anterior and posterior lobes weak. Clypeus anteriorly truncate. Apex of pygidium of females volcano-shaped with rounded top. Sulawesi Island........... sulawesiensis View in CoL sp. nov.

–– Posterior lobes of pronotum widely triangular. Sinuation between anterior and posterior lobes moderate. Clypeus anteriorly sinuate. Pygidium of females not modified. Taiwan Island and Japan (Amami Oshima Island)........... loebli Paulian, 1983