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Interested in a 2022 BugGuide gathering in New Mexico?

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Previous events


Subfamily Theclinae - Hairstreaks

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A Field Guide to the Butterflies of North America, East of the Great Plains
By Alexander B. Klots
Houghton Mifflin Co., Boston. xvi + 349 pp., 1951
Published only a few years after the Lepidopterists' Society formed (1947), this field guide contained the first published reports of a number of new U.S. records.

Klots, A.B. 1951. A Field Guide to the Butterflies of North America, East of the Great Plains. Houghton Mifflin Co., Boston. xvi + 349 pp.

A new subgenus and species of Callophrys (s.l.) from the Southwestern United States (Lepidoptera: Lycaenidea)
By P.R. Ehrlich and H.K. Clench
Entomological News Philadelphia, Vol. 71, No. 6, pp. 137-141, 1960

Observations on the life history of Callophrys xami (Lycaenidae)
By J. Benjamin Ziegler & Tarsicio Escalante
Journal of the Lepidopterists' Society, 1964

A butterfly with olive green eyes discovered in the United States and the Neotropics (Lepidoptera, Lycaenidae, Eumaeini)
By Robert Robbins, Jeffrey Glassberg
ZooKeys, 2013
Volume 305, pp. 1-20

Complete article available for free on-line here.

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.

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