Review of the Mimela species of the Dalat Plateau in southern Vietnam (Coleoptera, Scarabaeidae, Rutelinae) Author Prokofiev, Artem M. Author Zorn, Carsten text Beiträge Zur Entomologie = Contributions to Entomology 2016 2016-12-20 66 2 329 346 https://www.contributions-to-entomology.org/article/view/1909 journal article 10.21248/contrib.entomol.66.2.329-346 0005-805X 4754143 Mimela indosinica spec. nov. ( Figs 8 , 41–43 ) Holotype :  “ VIETNAM , Binh Thuan prov. , ~ 45 km SW Phan Thiet , My Thanh vill., 10°05.530' N , 107°54.450' E , alt. 180 m , monsoon forest, at light, 13– 16.5.2012 , A.M. Prokofiev leg. | [ holotype label]” ( CAP ). Paratypes : 1 , 1  [same label as for holotype ] | [ paratype label]” ( CAP ). 10 , 12  “THAI 21.–26.v.1993 NAMUANG Pacholatko & Dembicky leg. | [ paratype label]” ( CCZ , CPP ). 2 , 4  “THAI 20.v.1993 NAKHON THAI Pacholatko & Dembicky leg. | [ paratype label]” ( CCZ , CPP ). 1  “S VIETNAM , 1.– 15.5.1994 Nam Cat Tien Nat. park P. Pacholátk & L. Dembický leg. | [ paratype label]” ( CPP ). 1  “Thailand Exp. 30.3.–2.5.86 Koll. Lehmann | [ paratype label]” ( CCZ ). 1  “ LAOS centr. 27.iv.–1.v.1997 70 km NE Vientiane , BAN PHABAT env. 150 m N 18°16.1 E 103°10.9 , M. Štrba & Hergovits leg. | [ paratype label]” ( CCZ ). 1  “ LAOS , Bolikhamxai pr. 18°10' N 103°11' E , 70 km NEE Vientiane 27.–30.iv. 1997 , 150 m , Vit Kubán leg. | [ paratype label]” ( CPP ). 1  “ LAOS centr., Bolikhamsai prov. BAN NAPE Laew Nua Pass , 18.4.– 1.5.1988 , alt. 600± 100 m , N 18°22.3 E 105°09.1 ( GPS ), M. Strba & R. Hergovits ) | coll Vladislv Malý Česka Rep. Praha | [ paratype label]” ( CVM ) . Description ( holotype ): Length 13.0 mm, greatest width 7.0 mm. Testaceous, with strong metallic-green luster above, on pygidium and legs; abdomen much darker, reddish-brown; pilosity pale. Clypeus subrectangular, with sides indistinctly convergent anteriad, anterioranglesrounded; anteriormarginstraight, raised, tall in frontal view. Fronto-clypeal suture distinct. Clypeus finely, rugosely punctate, frons and vertex finely punctate, punctures becoming smaller and sparser toward the vertex. Pronotum 2.14 times broader than long, sides almost parallel in basal half, distinctly convergent in anterior half; anterior angles sharp; posterior angles weakly obtuse, shortly rounded. Anterior margin concave, almost straight in middle, with complete marginal line; posterior margin of pronotum convex, much more protruding in middle third, with marginal line in its outer thirds only. Pronotum and scutellum very finely and minutely punctured; outer margin of scutellum ogival. Punctures of elytra slightly more coarse and distinct, punctures simple, somewhat irregular in the subsutural, 2nd and 3rd interstice, but primary punctate rows regular and distinct. Sides of elytra with marginal line, with elytral epipleura thickened, glabrous. Pygidium strongly convex, finely and scantily punctured, with sparse but quite long erect hairs at apex and on most bulging portion. Prosternal process well-developed, plough-shaped, pointed anteriorly (with tip slightly inclined downward), its posterior ventral angle very weakly produced backward; sides with fine vertical rugosities. Mesometasternal process indistinct. Sides of sterna coarsely, rugosely punctate, with punctures ocellate, setigerous, with rather sparse adpressed hairs moderate in length; disc of metasternum glabrous, weakly impressed, with few sparse setae laterally. Abdominal sternites with a transverse row of distant moderately short setae just behind mid-line; last visible sternite with similar but somewhat denser setae along distal border. Protibia bidentate, teeth closely spaced, inner spur attached at level of basal tooth. Last joint of fore tarsi thickened, indented at mid-length of its concave margin. Inner fore claw broadened, with lobes almost parallel, lower lobe twice broader than upper at base. Outer claw of middle tarsi cleft. Aedeagus: Figs 41–43 . Female : Length 13.5 mm , greatest width 7.5 mm . Antennal club shorter. Pygidium less convex. Protibia with blunter teeth, apical tooth much longer, broader, finger-like. Inner spur attached well behind basal tooth of protibia. Last joint of fore tarsi much less broadened distally but similarly indented on curved margin; inner claw narrower, with lower lobe only 1.5 times broader than the upper one at base. Vaginal palpi triangular, setose. Variations : Length 12.5–16.0 mm, greatest width 7.8–9.1 mm . Differential diagnosis : Mimela indosinica is very similar to M. laotina OHAUS, 1930 , but is different in the following characters: body shape slightly more ovoid and stouter, elytra distally more enlarged in M. laotina , punctures of elytra rather small and weekly impressed in M. indosinica (vs. elytral punctures large and deeply impressed with convex primary striae in M. laotina ), elytra with the same color and strong shine like pronotum (less shining and slightly lighter than pronotum in M. laotina ), hind tibia more strongly fusiform in M. indosinica . The aedeagus of M. indosinica is quite different with much more pointed and elongate parameres which have an subapical inner tooth. The ventral plate is apically not extended like in M. laotina (figs 70–72). Distribution : South Vietnam : Dalat plateau, Laos : Bolikhamxai prov. , Thailand : Phitsanulok prov. Etymology : The species epithet is formed by the Latin adjective “ indosinicus , - a , - um ”, referring to the Indochinese distribution of this species.