McGugan et al. 2016. Journal of Chemical Ecology (doi:10.1007/s10886-016-0715-x) GC/MS files: Frog skin only. The ".raw" files can be opened by Waters MassLynx software. LC/MS files: Frog skin (same samples as run on GC/MS) and ant and mite samples isolated from those same frogs' stomachs. The ".d" files can be read by Bruker DataAnalysis software. XCMS output: Mass Spectrometry data was analyzed using XCMS. The output from this XCMS analysis is in "McGuganetal_2016_XCMSoutput.xlsx" and contains information on feature mass to charge ratio (m/z), retention times, statistical comparisons between frog populations using an ANOVA, and relative abundance measurements for each feature in each sample. Voucher Specimen ID Population CJ3809 Cristobal Colon CJ3810 Cristobal Colon CJ3811 Cristobal Colon CJ3812 Cristobal Colon CJ3815 Cristobal Colon CJ4066 Simon Bolivar CJ4069 Simon Bolivar CJ4073 Simon Bolivar CJ4074 Simon Bolivar CJ4076 Simon Bolivar CJ4091 Felfa CJ4093 Felfa CJ4095 Felfa CJ4096 Felfa CJ4097 Felfa Blank Methanol Blank