title: Two new species of Melanoplus Stål, 1873 (Orthoptera: Acrididae: Melanoplinae) from northeastern Mexico.
abstract: Two new species of the genus Melanoplus Stål 1873 are described. M. trachodes n. sp., and M. parvus n. sp., both of which are endemic to the cool-temperate mountains of the Eastern Sierra Madre (ESM) in northeastern Mexico. Their habitat represents a transition zone between the ESM and the semiarid High Plateau Biogeographic provinces. This transition zone is characterized by an elevation range from 1,900 to 3,400 m and unique ecological conditions, which give rise to a considerable number of endemisms.
authors: Instituto Tecnológico de Cd. Victoria. Blvd. Emilio Portes Gil No. 1301. Ciudad Victoria, Tainaulipas. Mexico. 87010. ludivinab@yahoo.com
authors: Ludivina
authors: L
authors: Barrientos-Lozano
authors: Aurora Y
authors: AY
authors: Rocha-Sánchez
authors: Jorge V
authors: JV
authors: Horta-Vega
mesh_terms: D063147:Animal Distribution; D000818:Animals; D005260:Female; D008297:Male; D008800:Mexico; D009987:Orthoptera / Q000033:anatomy & histology* / Q000145:classification* / Q000502:physiology; D013045:Species Specificity