Maeacris saytu, Cigliano & Pocco & Lange, 2011

Cigliano, María Marta, Pocco, Martina E. & Lange, Carlos E., 2011, Grasshoppers of the Andes: new Melanoplinae and Gomphocerinae taxa (Insecta, Orthoptera, Acrididae) from Huascarán National Park and Callejón de Huaylas, Ancash, Peru, Zoosystema 33 (4), pp. 523-544 : 533

Maeacris saytu n. sp.

( Figs 2 L-P; 6D-F; 10)

TYPE MATERIAL. — Peru. Ancash, 17 km N Conococha, 3947 m, 09°59’48.0”S, 77°20’11.8”W, 29.II.2008, Cigliano & Lange, holotype ♂, allotype ♀ ( MLPA).

PARATYPES. — Peru. Ancash, 17 km north of Conococha, 3947 m, 09°59’48.0”S, 77°20’11.8”W, 29.II.2008, Cigliano & Lange, 2 ♂♂, 1 ♀ ( MNHN), 3 ♂♂, 2 ♀♀ ( MLPA). — Ancash, Pque. Nac. Huascarán, Laguna Querococha, 4168 m, 09°43’06.3”S, 77°18’55.2”W, 15. V.2004, Cigliano & Lange, 1 ♂ ( MLPA). — Ancash, Pque. Nac. Huascarán, Sector Carpa, 5 km before Nevado Pastoruri, 4660 m, 09°53’00”S, 77°12’04.2”W, 14. V.2004, Cigliano & Lange, 1 ♂ ( MLPA).

TYPE LOCALITY. — Peru, Ancash, 17 km N Conococha, 3947 m, 09°59’48.0”S 77°20’11.8”W.

ETYMOLOGY. — “Sayt’u” means long, slender, rectangular shape in native Quechua language, and it refers to the shape of the valves of the aedeagus.

DISTRIBUTION AND HABITAT. — Same as described for Maeacris chilikuti n. sp. ( Fig. 10 ).

DIAGNOSIS. — Similar to Maeacris chilikuti n. sp. from which it is distinguished by characters of the phallic complex ( Figs 2 L-P; 6D-F).

DESCRIPTION

Males

Similar to those of Maeacris chilikuti n. sp. from which they can only be distinguished by the following characters of the phallic complex: aedeagal valves straight in lateral view ( Fig. 2L ), with blunt apex ( Fig. 2N ); arch of cingulum entire ( Fig. 2M ); sheath of aedeagus with longitudinal median excision without basal lobes.

Measurements (in mm): body length to apex of hind femur 10.75 (10-11); hind femur length: 5.8 (5.5-6).

Females

Similar to males but with fastigium more prominent; eyes subtrigonal; ovipositor valves long, slender, without pre-apical tooth.

Measurements (in mm): body length to apex of hind femur: 13.5 (13-14); hind femur length: 7.25 (7-7.5).

Figures

FIG. 2. — A-K, Maeacris chilikuti n. sp.; A, male habitus, lateral view; B, male head and pronotum, dorsal view; C, D, male distal abdominal segments, dorsal and lateral views; E, F, female head and pronotum, dorsal and lateral views; G-U, phallic complex of Maeacris, species as indicated;G, L, Q, endophallic plates,cingulum and aedeagal valves with sheath,lateral view;H, M, R, endophallic plates, cingulum and aedeagal valves with sheath, dorsal view; I, N, S, distal portion of aedeagus and aedeagal valves, ventral view; J, K, O, P, T, U, epiphallus, dorsal and lateral view. Scale bars: 1 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. (◆).