Fig. 4.

Non-metric multidimensional scaling (nMDS) plots based on the chemical composition of exogenous compounds present in hind legs of male Euglossa aff. viridissima. Ordination plots were computed based on a all volatile compounds, b all volatile compounds except the two most dissimilar between U.S. and Mesoamerican populations (i.e., HNDB4, triclopyr BEE), c the 50 compounds with highest incidence across all populations, and d all volatile compounds coded as binary characters (presence/absence). Filled circles and triangles correspond to individuals from naturalized populations