david.beadle:
Callibaetis pictus (Speckled Dun) - Lambton County, Ontario
david.beadle:
Ephemeroptera (Mayflies) - Toronto, Ontario
david.beadle:
Leucrocuta aphrodite (Stream Mayflies) - Nipissing District, Ontario
david.beadle:
Heptageniidae (Stream Mayflies) - Nipissing District, Ontario