|This species is often called Large Marble because it tends to be larger than other Euchloexbutterflies, although it is moderately small, a little bit over an inch wingspan. The underside is a marbled greenish and cream color. This one was found in the Chugach range foothills, on the McHugh Creek Trail. There was a courting pair struggling in gusty winds but I was able to photograph only this one, which I believe is the female. The males have less pigment on the forewings and lack the yellow color on the hindwings. This is a western species that ranges from Alaska south to northern New Mexico.
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of butterfly by clicking here and here.