New species and records of Macrodactylus Dejean (Coleoptera: Scarabaeidae: Melolonthinae: Macrodactylini) from Bolivia Author Arce-Pérez, Roberto Red Sistemática y Biodiversidad, Instituto de Ecología, A. C. Apdo. Postal 63, Xalapa, Veracruz 91000, Mexico. roberto.arce@inecol.mx Author Morón, Miguel Ángel Red Sistemática y Biodiversidad, Instituto de Ecología, A. C. Apdo. Postal 63, Xalapa, Veracruz 91000, Mexico. miguel.moron@inecol.mx text Zootaxa 2014 2014-08-28 3857 2 292 300 journal article http://dx.doi.org/10.11646/zootaxa.3857.2.8 09b8963f-3aa7-4914-9242-09d5968cfe35 1175-5326 229717 6D902CD0-7A28-485F-A91E-E23EE74C8907 Macrodactylus yunganus Arce-Pérez & Morón , new species ( Figs. 3 –4 , 10– 13 ) Diagnosis . Body integument and legs shiny black; funicle, elytra, sternite 6 , and pygidium yellowish red. Dorsally glabrous, ventrally with white setae; tarsi with rings of white setae. Parameres with setae. Description . Holotype male: Body length 12.5 mm , humeral width 3.9 mm . Color: Body shiny black; mouthparts, funicle, elytra, sternite 6 , and pygidium yellowish red. Surface: dorsally glabrous, ventrally with white vestiture; tarsi with rings of white setae. Head: Form elongate, rugopunctate. Clypeus trapezoidal, anterior border briefly sinuate. Antennal club mostly black, clearly shorter than funicle; length of funicle shorter than length of head. Mentum elongate and oval, longitudinally with wide furrow, with sparse setae on surface. Thorax: Pronotum hexagonal, convex; length 2.90 mm , width 2.80 mm ; black with blue shine, glabrous, rugopunctate. Prosternal process short, slender, subtriangular, acute; hidden in frontal view. Scutellum wide, black, with white setae. Elytra with slightly punctate striae, inner borders and central area darkened. Metasternum wide; with dense and abundant vestiture of slender, long, clear yellow setae between mesocoxae and metacoxae. Abdomen: Sternites 2–5 moderately concave at middle, sternites 1–5 with dense and abundant vestiture of slender and stout spine-like, erect, yellow setae at each side of midline; length of sternite 5 twice length of sternite 4 with spine-like, long setae; sternite 6 oval, yellow, with spine-like, long setae near the posterior border. Pygidium glabrous, elongate, ovate, with long spine-like setae on the apex. Legs: Profemur with a subrectangular projection near base. Mesotibia widened toward the apex; with two long, straight, acute spurs and long, spine-like setae around apex. Tarsi enlarged, with rings of white setae and long spine-like setae around apex; all tarsal claws long and cleft. Genitalia: Total length 2.10 mm . Parameres stout, oval, convex, broadly rounded with medium setae on distal half; weakly fused dorsobasally; apex rounded, slightly divergent; length 1.44 mm , width 1.02 mm ( Figs. 10–12 ). Allotype female : Body length 11.40 mm ; humeral width 3.70 mm . Similar to male except as follows: pronotum width 2.75 mm , length 2.50 mm , with clypeus and legs dark red, antennal club short, elytra darkened on inner borders, basal third yellowish red; sternites 2–5 convex; pygidium subtriangular, short, weakly convex. Genital plates long, oval, length 1.30 mm , width 0.52 mm ; apex rounded, asymmetrical, external border nearly rounded ( Fig. 13 ). Variation : One male paratype has the clypeus and legs yellow, and dark elytra; apex of parameres with straight inner border and briefly sinuate external border. Material examined : Holotype male : BOLIVIA , Santa Cruz , 16 km NE Mairana , Yunga de Mairana , 18 °03' 35 ''S 63 ° 54 ' 38 ''W , 29 -I- 1999 , 2100–2300 m , Yungas ex. hand collecting, trail, 99 -004. F. Génier ( CMNC ). Allotype: same data as holotype ( CMNC ). Paratypes ( 2 males ). BOLIVIA , Santa Cruz , 32.8 km NW Comarapa , Kara Huasi , Yunga de la Siberia , 17 ° 49 ' 20 ''S 64 ° 42 ' 31 ''W , 27 -I- 1999 , 2400 m , Yungas ex. hand collecting, trail, 99 - 0 0 2 , F. Génier ( 1 male CMNC , 1 male MXAL ). Natural history . Specimens were collected during daylight hours on leaves of unidentified plants in wet elfin forest in January ( 4 ) at elevations of 2100–2400 m . Remarks. The combination of colors, absence of dorsal setae, proportions of antennal parts, and shape of parameres and female genital plates aid to distinguish M. yunganus from other species.