A new Compsodactylus Fuhrmann (Coleoptera: Scarabaeidae: Melolonthinae) from Peru Author Figueroa, Luis Departamento de Entomología, Museo de Historia Natural, Universidad Nacional Mayor de San Marcos, Av. Arenales 1256 Jesús María, Lima 14, Perú. & Bosque Llaqta, Av. Confraternidad Internacional Este Nº 364, Huaraz, Perú Author Neita-Moreno, Jhon César Instituto de Investigaciones de Recursos Biológicos Alexander von Humboldt. Claustro de San Agustín, Villa de Leyva, Boyacá, Colombia text Zootaxa 2019 2019-02-26 4560 3 587 591 journal article 21234 10.11646/zootaxa.4560.3.12 e1c7a0c0-f975-4b96-9bb4-8bef87d84860 1175-5326 3993466 FC4CC45F-8261-4FFA-82EC-A27AC0301944 Compsodactylus vallejoi Figueroa & Neita-Moreno , new species ( Figs. 1–2 , 4–5, 7–8, 10 , 14–19 ) Type material . Holotype and allotype labeled: “ PERÚ . LL. [ La Libertad Departament] Pataz, // Unidad Minera Santa // María. Rio Hualanga // 7 o 46’37.21”S / 77 o 36’46.3 // 5”W 1785m 07.iii.17[2017] // P. Ancajima ” both with red labels. Three male paratypes with same data as the holotype, and one female paratype labeled: “ PERÚ . LL. [ La Libertad Departament] Pataz, // Unidad Minera Santa // María. Rio Hualanga // 7 o 45’45.23”S / 77 o 38’30.2// 4’’W 1413m 04.iii.17[2017] // P. Ancajima ”; paratypes with yellow labels. The holotype, allotype, and two paratypes (both males) are deposited at the Museo de Historia Natural de la Universidad Nacional Mayor de San Marcos ( MUSM ), Lima , Peru . Two paratypes (male and female) are deposited in the Snow Entomological Collection , University of Kansas ( SEMC ), Lawrence, Kansas , United States of America . Description . Holotype . Male ( Figs. 1–2 ). Length 6.9 mm , width 3.4 mm at middle of elytra. Head black; pronotum black with lateral margins and posterior third brownish testaceous ( Figs. 1–2 ); elytra testaceous with black margins; scutellum testaceous; femur brownish testaceous; protibia black, laterodistally transitioning to brown; mesotibia brownish black, dorsally transitioning to testaceous; metatibia brownish testaceus with dark maculae. Head: frons and clypeus with denticle-like setae, epistomal suture indistinct, interocular distance about 5.7 times as wide as width of eye in dorsal view. Pronotum: with long setae ( Fig. 1 ). Elytra: anterior margin of scutellum 0.4 times as wide as length of anterior margin of elytra, elytral striae distinctly punctate. Leg: protibia bidentate; protarsomere 1 widened distally ( Fig. 7 ), 2.3 times as long as protarsomere II; protarsal claws with anterior tooth narrower and longer than internal tooth; metafemur enlarged with some long, erecte setae ( Fig. 7 ); metatibial apex enlarged, distally forming an obtuse projection. Pygidium glabrous or sparsely setose, setae short and slender. Parameres: simple and enlarged ( Figs. 14–16 ). Allotype . Female. Length 6.8 mm , width 3.5 mm at middle of elytra. Coloration similar to holotype , except pronotum black and with only the posterior margin brownish testaceous; protarsomere 1 thin ( Fig. 5 ), 1.3 times as long as protarsomere 2; metafemur only slightly enlarged without long, erect setae, and without enlarged metatibial apex ( Fig. 8 ). Variation. Males: length 5.8–6.4 mm , width at middle of elytra 3.0– 3.3 mm . Females: the paratype is slightly larger than the allotype (length 7.3 mm , width 3.7 mm at middle of elytra) and the pronotum is uniformly black. Diagnosis. In the Fuhrmann (2012) key to Compsodactylus species, C . vallejoi will key out to couplet 2 based on the character states: body not dorsoventrally flattened, posterior area of clypeus with denticle-like setae, elytral striae strongly punctate with C. martinezi and C. scabrosus . Compsodactylus vallejoi differs from the other species in the genus by having protarsomere 1 of males enlarged ( Fig. 4 ). Compsodactylus vallejoi is similar to C . martinezi as both species have the metafemur of both sexes slightly enlarged ( Figs. 6–7 ) and both species with a gonostyle ( Figs. 13, 16 ). Compsodactylus vallejoi is distinguished by the black head without metallic reflections ( C . martinezi has a black head with metallic green reflections), the pronotum is black with margins brownish testaceous ( C. martinezi has a black pronotum with metallic green reflections), and elytra without metallic green reflections (elytra have metallic green reflections in C. martinezi ). Finally, the metafemur of the male of C . vallejoi lacks an apical tooth ( Fig. 7 ), which is present in C. martinezi ( Fig. 6 ). The male and female genitalia ( Figs. 11–16 ) are diagnostic (see Fuhmrann 2012: Figs. 70–71, 73–75). Distribution. Specimens were collected in two locations, at approximately 3 km apart along the Hualanga River, which is a tributary of the Marañón River ( Fig. 17–19 ). It is an area that corresponds to a dry inter-Andean forest, which depends strictly on seasonal rains, as well as moisture from the Hualanga River. FIGURES 1–2. Compsodactylus vallejoi holotype. 1 , Dorsal habitus; 2 , lateral habitus. FIGURES 3–10. Compsodactylus martinezi and C. vallejoi leg characters. 3 , Compsodactylus martinezi prothoracic legs (dorsal); 4 , C. vallejoi prothoracic legs (dorsal); 5 , C. vallejoi prothoracic legs (dorsal); 6 , C. martinezi metafemur (dorsal); 7 , C. vallejoi metafemur (dorsal); 8 , C. vallejoi metafemur (dorsal); 9 , C. martinezi apex of metatibia; 10 , C. vallejoi apex of metatibia. FIGURES 11–16. Compsodactylus martinezi and C. vallejoi genitalic characters. 11, Compsodactylus martinezi phallobase and parameres (lateral); 12, C. martinezi parameres (frontal); 13, C. martinezi female genital plates; 14 , C. vallejoi phallobase and parameres (lateral); 15 , C. vallejoi parameres (frontal); 16 , C. vallejoi female genital plates. FIGURES 17–19. Compsodactylus vallejoi . 17 , distribution; 18–19 , habitat. Etymology. The specific name vallejoi is in honor of the great poet and writer Cesar Vallejo, born in La Libertad Department.