Papilio multicaudata, the two-tailed swallowtail, is a species of the family Papilionidae found in western North America from British Columbia to Central America.
Euchloe ausonides, the large marble or creamy marblewing, is a species of butterfly that occurs in western North America. It lays eggs on the terminal flower buds of a variety of plants in the mustard family, including introduced Eurasian species, and the larvae feed on the buds, flowers and fruit of these plants. In California, it has witnessed population declines since the 1980s, especially in the Central Valley and the Bay Area, and in Washington, its subspecies the island marble butterfly is a candidate for listing under the Endangered Species Act.
The bonytail chub or bonytail is a cyprinid freshwater fish native to the Colorado River basin of Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming in the southwestern United States; it has been extirpated from the part of the basin in Mexico. It was once abundant and widespread in the basin, its numbers and range have declined to the point where it has been listed as endangered since 1980 (ESA) and 1986 (IUCN), a fate shared by the other large Colorado basin endemic fish species like the Colorado pikeminnow, humpback chub, and razorback sucker. It is now the rarest of the endemic big-river fishes of the Colorado River. There are 20 species in the genus Gila, seven of which are found in Arizona.
Pine Hill Ecological Reserve is a nature reserve of 403 acres (1.63 km2) located due east of Folsom Lake in the Sierra Nevada foothills, in El Dorado County, California. The reserve was established in 1979, and is managed by the Bureau of Land Management.
Cecropterus is a genus of skippers in the family Hesperiidae, within which it is placed in subtribe Eudamina. It has three subgenera: Cecropterus, Thorybes and Murgaria.
Nitrophila mohavensis is a rare species of flowering plant in the family Amaranthaceae known by the common name Amargosa niterwort. It is endemic to Nye County in southwestern Nevada and Inyo County, in eastern California.
The Audubon Kern River Preserve is a riparian nature reserve owned by the National Audubon Society in the US state of California, near Weldon in Kern County.
Puccinellia parishii is an uncommon species of grass known by the common names bog alkaligrass and Parish's alkali grass. It is native to the western United States, where it is known from a few locations in Arizona and New Mexico, and one occurrence each in California and Colorado.
Polites sabuleti, the sandhill skipper or saltgrass skipper, is a butterfly in the family Hesperiidae. It is found from southern British Columbia and eastern Washington, south through California and northern Arizona to Baja California and east to south-eastern Wyoming, central Colorado, and north-eastern New Mexico. It is an introduced species in Hawaii.
Neophasia menapia, the pine white, is a butterfly in the family Pieridae. It is found in the western United States and in southern British Columbia, Canada.
Polites mardon, the Mardon skipper, is a butterfly native to the United States northwest coast.
Ochlodes sylvanoides, the woodland skipper, is a butterfly of the family Hesperiidae. It is found in North America from British Columbia south to southern California, east to Montana, Colorado and Arizona.
Euphilotes battoides, the square-spotted blue or buckwheat blue, is a species of butterfly of the family Lycaenidae.
Callophrys polios, the hoary elfin, is a butterfly of the family Lycaenidae. It has a very local distribution in the United States from Maine south to New Jersey and in the Appalachian Mountains to Virginia, west across the Great Lakes states and the southern prairie provinces and north to Alaska. Along the Pacific Coast it is found to northern California and in the Rocky Mountains south to northern New Mexico. It is listed as a species of special concern and believed extirpated in the US state of Connecticut.
Satyrium saepium, the hedgerow hairstreak, is a butterfly of the family Lycaenidae. It is found in western North America, from British Columbia south through California into Baja California and east through northern Arizona to northern New Mexico, Colorado and Montana.
Speyeria egleis, commonly known as the Great Basin fritillary or egleis fritillary, is a butterfly of the family Nymphalidae. It is found in North America, where it has been recorded from North Dakota southwest through Oregon to California and south to Colorado. The habitat consists of mountain meadows, forest openings and exposed rocky ridges.
Euphilotes enoptes, the dotted blue, is a species of blue (Polyommatinae) butterfly in the family Lycaenidae. It is found in North America.
Ochlodes yuma, the Yuma skipper, is a species of grass skipper in the butterfly family Hesperiidae.
Hesperia lindseyi, known generally as Lindsey's skipper, is a species of grass skipper in the butterfly family Hesperiidae. Other common names include the Lindsey's branded skipper and lost-egg skipper. It is found in North America.
Euphilotes bernardino, the Bernardino blue, is a butterfly in the family Lycaenidae. The species was first described by William Barnes and James Halliday McDunnough in 1916. It is found in North America.
