Batrachideinae (Orthoptera: Caelifera: Tetrigidae): an overview of the most diverse tetrigids of the Neotropical region Author Silva, Daniela Santos Martins Author Cadena-Castañeda, Oscar J. 0000-0001-5646-0602 ojccorthoptera@gmail.com Author Pereira, Marcelo Ribeiro 0000-0002-7317-3565 marcelo.ribeiropereira@gmail.com text Zootaxa 2021 2021-03-17 4946 1 1 84 journal article 7390 10.11646/zootaxa.4946.1.1 25461134-191d-419b-acc4-fdbb42da4b3e 1175-5326 4614393 EB6B2506-7330-4EFC-A1E9-4232FFFAEA17 10. Genus Rehnidium Grant, 1956 Rehnidium , as the most part of batrachideines, is a genus with wide distribution in South America ( Fig. 39 ) but poorly understood and few specimens known beyond the type’s species. After review of the Scaria (Cadena-Castañeda et al. , 2019), the genus Rehnidium currently has four species: Rehnidium mendosum Grant, 1956 (from Peru , Monson Valley, Tingo Maria) ( Fig. 28 ); Rehnidium necopinum Grant, 1956 (from Peru , Departamento del Cusco , Marcapata) ( Figs. 29 , 30 ); Rehnidium omnivagum Grant, 1956 (from Brazil , Mato Grosso , Santa Rosa de Descalvados) ( Figs. 31 , 32 ) and Rehnidium perexiguum Grant, 1956 ( Ecuador , Tungurahua , Baños) ( Fig. 33 ) ( Grant, 1956 , 1962 ; Cigliano et al. , 2021 ). Rehnidium is characterized by follow: protrusive frontal costa; antennae with 21 segments; wings reduced, apparently absent; anterior margin of the pronotum (lateral and dorsal view) hook-like (median carina sharply cristate); presence of lateral darkish perpendicular band from eyes to disc pronotal region and only brachpronotal specimens ( Grant, 1956 , 1962 ).