Pearl Crescent (Phyciodes tharos)
Male - Manion Corners, ON 2013/07/12
Male - Manion Corners, ON 2010/08/20
Almonte, ON 2013/09/12 (mating pair of Calico morphs - female on the right)
Female - Manion Corners, ON 2013/07/12
Member of Family: Nymphalidae
French common name: Croissant perlé
The Pearl and Northern Crescents were declared separate species relatively recently, and there is still some question as to whether there are additional species in this complex. In any case, distinguishing them is problematic, as everyone seems to use slightly different criteria to tell them apart. As such, my identifications here should be taken with a grain of salt.
The normal form of the Pearl Crescent is shown at top left. At bottom left, the image shows what we call the "Calico" morph (aka "Marcia form"). All Crescent species produce this form early and late in the season. It is characterized by a pattern of cream, orange, and reddish-brown patches (which is why I coined the term Calico for this form).
To see where this butterfly has been reported, visit: The Ontario Butterfly Atlas Online
For more info on this species, visit the Butterflies of Canada ( en français )