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-The cuticular hydrocarbons of four groups of grasshoppers were identified and quantified by capillary column gas-liquid chromatography (GLC) and GLC-mass spectrometry (GLC-MS), including samples of: 1) a modern species, M. sanguinipes (Fabricius), 2) a morphologically similar extinct species, M. spretus Walsh, 3) 650year old fragments recovered from a receding glacier in southwestern Montana, and 4) 140-year old whole bodies from a glacier in northwestern Wyoming. Quantitative data from 20 n-alkanes and methyland dimethyl-branched alkanes were compared using discriminant analysis, which showed differences in cuticular hydrocarbon patterns between the putative species M. sanguinipes and M. spretus. The resulting discriminant model classified the glacially preserved whole bodies as M. spretus, but the identity of the fragments remains ambiguous [

journal of orthoptera research

Cuticular Hydrocarbons of Glacially-Preserved Melanoplus (Orthoptera: Acrididae): Identification and Comparison with Hydrocarbons of M. sanguinipes and M. spretus