Effects of Abiotic Factors on the Geographic Distribution of Body Size Variation and Chromosomal Polymorphisms in Two Neotropical Grasshopper Species (Dichroplus: Melanoplinae: Acrididae)

Table 3

Mean body length in mm (BL) and coefficients of variation (CV) in selected marginal and central populations of two species of grasshoppers. LAT: latitude in decimal degrees; ALT: altitude in metres above sea level.

Species	Population	LAT	ALT	Male BL/CV	Female BL/CV
D. pratensis	Volcán	23.92	2574	22.36/5.56	24.34/4.69
	Estación Mazán	28.73	646	23.83/4.56	26.48/5.71
	Don Tomás	36.68	175	24.24/4.00	25.41/3.51
	Olavarría	36.92	162	22.57/3.95	24.34/4.30
	Diadema Argentina	45.78	326	19.29/5.86	22.18/6.21
	Villa Rada Tilly	45.95	0	18.21/6.33	23.17/6.37
D. vittatus	Huacalera	23.43	2758	17.30/4.05	21.66/6.09
	Santiago del Estero	26.02	174	21.62/4.38	24.83/3.71
	Valle Fértil	30.63	828	18.55/4.64	24.68/2.35
	Villa del Rosario	31.57	248	19.19/3.65	26.08/3.26
	Toay	36.57	174	16.77/7.69	20.76/2.89
	Playa Unión	43.07	36	16.43/5.78	20.26/8.29