Grasshoppers of the Andes: new Melanoplinae and Gomphocerinae taxa (Insecta, Orthoptera, Acrididae) from Huascarán National Park and Callejón de Huaylas, Ancash, Peru Author Cigliano, María Marta Author Pocco, Martina E. Museo de La Plata, División Entomología, Paseo del Bosque 1900, La Plata (Argentina) cigliano @ fcnym. unlp. edu. ar martinapocco @ fcnym. unlp. edu. ar Author Lange, Carlos E. Comisión de Investigaciones Científicas (CIC) de la provincia de Buenos Aires, CCT La Plata, CEPAVE, CONICET-UNLP, calle 2 # 584,1900, La Plata (Argentina) carlosl @ cepave. edu. ar text Zoosystema 2011 2011-12-31 33 4 523 544 http://dx.doi.org/10.5252/z2011n4a5 journal article 10.5252/z2011n4a5 1638-9387 5166897 Orphulella chumpi n. sp. ( Figs 8 ; 10 ) TYPE MATERIAL . — Peru . Ancash , 19 km S from Conococha on road to Barranca, 3275 m , 10°08’59.1”S , 77°21’42.8”W , 22.II-02.III.2008 , Cigliano & Lange, holotype ♂ ( MLPA ). — Ancash , Callejón de Huaylas, 7 km S from Huaraz, 3182 m , 09°36’17.5’’S , 77°30’33.8’’W , 23.II.2008 , Cigliano & Lange, allotype ♀ ( MLPA ). PARATYPES . — Ancash , Callejón de Huaylas , 7 km S of Huaraz , 3182 m , 09°36’17.5’’S 77°30’33.8’’W , 23.II.2008 , Cigliano & Lange , 1 ♀ ( MLPA ) ; 1 ♀ ( MNHN ) . ETYMOLOGY. — “Chumpi” means brown in native Quechua language and it refers to the general body colour. DISTRIBUTION. — Peru , Ancash ( Fig. 10 ). HABITAT. — As with most species of the genus, Orphulella chumpi n. sp. is found in grassy areas in the valley of “Callejón de Huaylas”. DIAGNOSIS. — Similar to Orphulella fluvialis , from which it differs mainly in the following features: hind femora with stridulatory pegs (without stridulatory pegs in O. fluvialis ), lateral carinae of pronotal disk distinct in central part (usually indistinct in O. fluvialis ) and cut by one sulcus (cut by two or three sulci in O. fluvialis ); posterior margin of pronotum slightly angulate (rounded in O. fluvialis ). DESCRIPTION Males Body colour light brown on top, brown-gray on sides and brown ventrally. Hind femora with few dark markings on the outer faces.Hind knees dark brown. Hind tibia brown. Lateral foveolae of the fastigium barely visible from above.Antennae short and slightly ensiform, light brown proximally and dark brown distally.Pronotum with a black band on lateral lobes, just beneath the lateral carinae ( Fig. 8A ). Posterior margin of pronotal disk angulate, slightly rounded. Mid-longitudinal carina on pronotum prominent and cream colour; lateral carinae distinct throughout their length, nearly parallel on the prozona, constricted in center, diverging on the metazona and cut by one transverse sulcus( Fig.8C ). Hind femora in males with stridulatory pegs.Wing length barely reaching the end of the abdomen ( Fig.8A ).Like other gomphocerines, species in the genus Orphulella do not show diagnostic characters in the phallic complex ( Fig. 8E, F ). FIG. 7. — Huaylasacris maxicerci n. gen, n. sp.: A , male habitus, lateral view; B , female habitus, lateral view; C , D , endophallic plates, cingulum and aedeagal valves with sheath, lateral and dorsal views; E , epiphallus, dorsal view. Scale bars: 5 mm. FIG. 8. — Orphulella chumpi n. sp. : A , male habitus, lateral view; B , female habitus, lateral view; C , male head and pronotum, dorsal view; D , female head and pronotum, dorsal view; E , F , phallic complex, lateral and dorsal views. Scale bars: 5 mm. A FIG. 9. — Trimerotropis andeana Rehn, 1939 : A , male habitus, lateral view; B , female habitus, lateral view; C , D , endophallic plates, cingulum and aedeagal valves, lateral and dorsal views; E , epiphallus, dorsal view. Scale bars: 5 mm. FIG. 10. — Geographic distribution of species collected in this study: Huaylasacris maxicerci n. gen., n. sp. (□); Maeacris ayasqa n. sp. (■); M. chilikuti n. sp. (△); M. saytu n. sp. (▲); Orphulella chumpi n. sp. (☆); Pediella ancashensis Cigliano, Amédégnato,Pocco & Lange, 2010 (★); Trimerotropis andeana Rehn, 1939 (◇); Tiyantiyana sunipenis n. gen., n. sp. (◆). Measurements (in mm): body length to end of hind femur: 11; hind femur length: 6.8. Females ( Fig. 8B, D ) Similar to males, with body dorsally light brown or pale green and brown on sides. One female with sides of body and abdomen somewhat dark mottled and with two black stripes on top of head. Measurements (in mm):body length to end of hind femur: 16.6 (15-18); hind femur length: 6.8. REMARKS A modified key to the South American species of Orphulella based on Otte’s key (1979) including the new species O. chumpi was added to OSF.