Cascade-mountains

Guides

Lasionycta caesia
Lasionycta caesia is a noctuid moth restricted to high-elevation alpine habitats in the Pacific Northwest. It was described in 2009 as part of a comprehensive revision of the genus Lasionycta. The species occurs exclusively in rocky alpine tundra near tree line in the Cascade Mountains of northern Washington and the British Columbia Coast Range, extending north to 58° latitude. Adults are active for a brief period from mid-July to mid-August.
noctuidae moth alpine pacific-northwest cascade-mountains nocturnal endemic high-elevation tundra
Oeneis nevadensis
Great Arctic, Nevada Arctic, great grayling, Felder's Arctic, Pacific Arctic
Oeneis nevadensis, commonly called the great Arctic, is the largest western Arctic butterfly with a wingspan of 5.1–6.3 cm. It is distinguished by its biennial life cycle, with adults appearing only in even-numbered years for most populations. The species occurs in high-elevation habitats of the Cascade Mountains from southern British Columbia to northern California, where it represents the southernmost range limit for this Arctic group in western North America.
butterfly Arctic biennial montane Cascade-Mountains satyrinae western-North-America fire-sensitive