The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
Hilty, J. Editor. 2015. Insect Visitors of Illinois Wildflowers. World Wide Web electronic publication. illinoiswildflowers.info, version (07/2015)
See: Abbreviations for Insect Activities, Abbreviations for Scientific Observers, References for behavioral observations
- Hodges, Ronald W., et al., eds. 1983. Check List of the Lepidoptera of America North of Mexico. xxiv + 284
- Opler, Paul A. 1999. A Field Guide to Western Butterflies, Second Edition. xiv + 540
- Pelham, Jonathan P. 2008. A catalogue of the butterflies of the United States and Canada with a complete bibliography of the descriptive and systematic literature. Journal of Research on the Lepidoptera, vol. 40. xiv + 658
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