Appendix A: The number of ant workers foraging on Ferocactus wislizeni plants during AprilJune 2003 and JulySeptember 2003.
Ecological Archives E087-053-A1.Appendix B: Summary data distinguishing four ant species that visit the extrafloral nectaries of Ferocactus wislizeni, and reproduction on plants typically tended by those ants.
Ecological Archives E087-053-A2.
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