Butterflies of Ontario - my website that focuses on Ontario
Butterflies of the Maritimes - my website that focuses on the Maritime Provinces
eButterfly - an interactive website where citizens can contribute their butterfly observations!
Butterflies of Canada - online version of this important reference work
Les papillons diurnes du Canada - french version of Butterflies of Canada
West Virginia White - group tracking/researching this threatened species
Leps Blog - Blog on Butterfly related topics
Sentinels on the Wing - comprehensive overview of Status and Conservation of Butterflies in Canada
Sparroworks Wildlife Co. - lots of great birding and wildlife related info
Monarch Teacher Network - workshops and resources on using Monarch butterflies in the classroom
Butterflies Beautiful - Butterfly kits for the Classroom
Lucy's Butterfly Farm - Butterfly kits
Gaia Nature - Butterflies for the Classroom
moths.ca - amazing moth images by Jim des Rivières
Larry Neily's Birding Ottawa - A great resource for finding spots to visit in the Ottawa-Gatineau region. Many of the area's "hotspots" are described, often with trailmaps and directions to trailheads
also see the links for Field Naturalists' clubs below - their sites typically feature info on hiking trails
Butterfly_obs - A yahoo group where members report their sightings for Eastern Ontario and West Quebec
Ontario Butterflies - A google group where members report their sightings for Southern Ontario
Mississippi Valley Field Naturalists - Lanark
Macnamara Field Naturalists' Club - Arnprior area
Pembroke Area Field Naturalists - page dedicated to Butterflies & Moths of Renfrew County
Quinte Field Naturalists - includes Prince Edward County
Willow Beach Field Naturalists - Port Hope/Cobourg area
Kawartha Field Naturalists - Lindsay/Fenelon Falls
Ontario Nature - this page provides links to clubs across Ontario
Toronto Entomological Association - lots of useful information for Ontario in general
Maritimes Butterfly Atlas - you have to dig a bit to get to the species pages, but there's some useful information about many species that we have in common.
British Columbia Butterfly Atlas - lots of excellent information
Butterflies of Nova Scotia - a similarly organized website covering many of the same species as this one.
Wisconsin Butterflies - a nicely constructed website covering many of the species we also have here in Ontario, but not all species featured on this website will be found here.
Massachusetts Butterfly Club - a website featuring a useful tool for comparing photos of different species side-by-side. Not all species featured on this website will be found in Ontario.
Butterflies of the Carolinas and Virginias - another site with features that are handy for Butterfly identification - in this case, when you place your cursor over the photograph, identification keys pop up. Not all species featured on this website will be found in our area.
Digital Atlas of Idaho ( Butterflies section ) - another site with some interesting tidbits of info, though there's less overlap between the western species and those here in the east.
Butterflies of the World Foundation - despite the name, seems to be centered on Oklahoma and surrounding states.