Massachusetts Butterfly Club

A Chapter of the
North American Butterfly Association

Can You ID This Butterfly?

1. Mouse over the photo to see the species name.  
2. Click the photo to see the
species web page.  
3. Click here to see a new photo.

The Massachusetts Butterfly Club sponsors state-wide butterfly activities to promote education, conservation, interpretation, and fun! We invite people of all ages and levels of expertise to attend our meetings, programs, field trips, and butterfly counts and to become members of our club.

The Spring meeting of the Massachusetts Butterfly Club will be held at Broad Meadow Brook Conservation Center in Worcester, MA on Saturday, April 11, beginning at 5:30 pm. Festivities will include a pot-luck supper and a membersí slide show in which member photographers can each show their favorite 20 butterfly photos from the past season. More details on the program for the evening will be forthcoming, but for now, save the date:
         Saturday, April 11, at 5:30pm.

The Fall 2014 Mass Butterfly Club Fall Potluck Supper Meeting was held on Saturday, October 18th at the Massachusetts Audubon Society Broad Meadow Brook Conservation Center in Worcester.
Please click here to see a writeup and photographs taken at the meeting.
The Fall 2014 issue of Massachusetts Butterflies was handed out to all members who attended the meeting. It has been mailed to all other members.
If you are a member and have not received it, please send email to

The 7th annual Barbara J. Walker Butterfly Festival   was held Saturday, August 9th at the Massachusetts Audubon Society Broad Meadow Brook Conservation Center in Worcester.
Click here to see a write-up and a few pictures taken during the festival.

The Butterflies of Massachusetts by Sharon Stichter

Sharon Stichter's new website The Butterflies of Massachusetts, is available at!! This wonderful resource presents new information on the abundance and distribution of Massachusetts butterflies based directly on Massachusetts Butterfly Club sighting data. It also contains a wealth of historical background on each species, as well as conservation and management information!

Links to each species account on this new website will be available from our species photograph pages.

The Caterpillars of Massachusetts 2009 by Sam Jaffe

After a fantastic 2009 season spent seeking out and photographing many of our more spectacular caterpillars, Sam has combined his notes on Massachusetts' caterpillar life histories into a single document. Now, with the help of the Massachusetts Butterfly Club, these notes are available online, as a pdf, with accompanying thumbnail links to Sam's relevant photographs.

These notes should not be mistaken for an exhaustive resource, but the information provided regarding caterpillar location, hostplant, season, and behavior might be especially relevant to all Massachusetts butterfly and moth enthusiasts.

The update to the Checklist of Massachusetts Butterflies is here! See the description on the club publications page to view a sample page and learn how to order yours today!

Many thanks to Erik Nielsen for compiling the records and for creating the checklist and to Mark Fairbrother for maintaining our records!

We are delighted to announce the publication of

The Massachusetts Butterfly Club GUIDE TO GOOD BUTTERFLY SITES

From the Berkshires to the Cape and Islands, this GUIDE will lead you through twenty-six of the best butterfly-finding sites in the state. Written by well-known Massachusetts Butterfly Club field experts, this 142-page coil-bound book describes each site in detail, with original trail maps, sighting lists, directions, and hot tips!

Order yours today!

Sign up to get e-mail from Massachusetts butterfly enthusiasts!

If you wish to receive periodic e-mail messages about butterflies in Massachusetts and to report your own butterfly sightings, consider joining the MassLep list server. Butterfly watchers from around the state send messages listing the butterflies they see, describing butterfly behavior, posing questions, and answering them. Joining the list server is a great way to find out what's flying and to get to know others who share your interests!

Subscribe to MassLep
Browse Archives at

You may read the pre-Sept 2005 archived MassLep e-mail messages here.

If you have problems with subscribing or unsubscribing to the MassLep list server, send an email to the list server monitor.

This website is a work in progress.
Send your suggestions to our webmaster.