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Genus Euphilotes

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Additional taxonomic refinements suggested by genomic analysis of butterflies.
By Zhang, J., Q. Cong, J. Shen, L. Song, P.A. Opler and N.V. Grishin
Taxonomic Report of the international Lepidoptera Survey 11(1): 1-25, 22 figs., 2023
Link to download - Zenoobo

Zhang, Jing, Qian Cong, Jinhui Shen, Leina Song, Paul Alexander Opler and Nikolay Vyacheslav Grishin. 2023. Additional taxonomic refinements suggested by genomic analysis of butterflies. Taxonomic Report of the International Lepidoptera Survey 11(1): 1-25, 22 figs.


Comparative analyses of genomic data reveal further insights into the phylogeny and taxonomic classification of butterflies presented here. As a result, 2 new subgenera and 2 new species of Hesperiidae are described: Borna Grishin, subgen.

Genomic evidence suggests further changes of butterfly names
By Zhang, J., Q. Cong, J. Shen, P.A. Opler, N.V. Grishin
Taxonomic Report of the International Lepidoptera Survey, 8(7): 1-41., 2020
Zhang, J., Q. Cong, J. Shen, P.A. Opler, N.V. Grishin, 2020. Genomic evidence suggests further changes of butterfly names. Taxonomic Report of the International Lepidoptera Survey, 8(7): 1-41.

Butterflies of Pennsylvania, a field guide
By James L. Monroe, David M. Wright
University of Pittsburgh Press
From the publishers page:

This work has all of the features that make field guides to a region's butterfly fauna useful to anyone with a serious interest in that fauna. . . . the book is a bargain and a must for anyone with an interest not just in Pennsylvania's fauna, but the northeast fauna as a whole.
News of the Lepidopterists' Society

Winner, 2017 National Outdoor Book Award


Though I am in the southeast, I own this field guide and find it very useful - Roy Cohutta Brown.

The Tent Caterpillars
By Terrence D. Fitzgerald
Cornell University Press, 1995
All aspects of the biology of tent caterpillars.

ISBN-13: 978-0801424564
ISBN-10: 0801424569

Butterflies of Oregon, Their Taxonomy, Distribution, and Biology
By Andrew D. Warren
C.P. Gillette Museum of Arthropod Diversity, Dept. of Bioagricultural Sciences and Pest Management, Colorado State University, 2005
408 pages

Book / paper is referenced extensively by other authors (Pyle, James, Nunnallee, etc.)
in their butterfly books about Cascadia / Pacific Northwest.

A Swift Guide to Butterflies of North America: Second Edition
By Jeffrey Glassberg
Princeton University Press, 2017
Publisher's Page
This is a revised second edition of the most detailed, comprehensive, and user-friendly photographic field guide to the butterflies of North America. Written by Jeffrey Glassberg, the pioneering authority on the field identification of butterflies, the guide covers all known species, beautifully illustrating them with 3,500 large, gorgeous color photographs—the very best images available. This second edition includes more than 500 new photos and updated text, maps, and species names. For most species, there are photographs of topsides and undersides, males and females, and variants. All text is embedded in the photographs, allowing swift access in the field, and arrows point to field marks, showing you exactly what to look for. Detailed, same-page range maps include information about the number of broods in each area and where strays have been recorded. Color text boxes highlight information about habitat, caterpillar food plants, abundance and flight period, and other interesting facts. Also included are a quick visual index and a caterpillar food plant index. The result is an ideal field guide that will enable you to identify almost every butterfly you see.

Butterflies of the Pacific Northwest
By Robert Michael Pyle, Caitlin C. LaBar
Timber Press, Inc., 2018
Publisher's Page
This book is an updated and revised version of The Butterflies of Cascadia.
A must-have for nature lovers in the Pacific Northwest Butterflies of the Pacific Northwest is an easy-to-use and beautifully illustrated field guide to more than 200 of the region’s most common and distinctive butterflies. Profiles include preferred common name for both genus and species, conservation status, the look and distinguishing traits of each butterfly, habitat and range, and much more. Additional information includes a brief introduction to how butterflies work and details on ecology and conservation.

Butterflies of Louisiana: A guide to identification and location
By Marks, C.
LSU Press, Baton Rouge, LA, 2018
Publisher's Page

Craig Marks. 2018. Butterflies of Louisiana: A Guide to Identification and Location. LSU Press, Baton Rouge, LA. 472 pgs.


Butterflies abound in every region of the Bayou State, and with this authoritative resource in hand, both the experienced and novice butterfly watcher can identify a frequent backyard visitor or pinpoint the haunts of a particular species. With a long flight season stretching from late February to early November, Louisiana offers an abundance of opportunities to observe the 154 native species of butterflies, whose habitats range from coastal prairies to swampland to northern piney woods.

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