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Southern Mountain Yellow-legged Frog (Rana muscosa)
Amphibians Around Las Vegas, Wildlife Around Las Vegas
Mountain Yellow-legged Frog (Rana muscosa)

General Description: Southern Mountain Yellow-legged Frogs (Rana muscosa) are creatures of high alpine streams and ponds in the Sierra Nevada Mountains of California that are free of introduced trout. These are the only leopard frog in these high elevations, and they have yellow on the underside of the legs and belly.

Taxonomy: Family Ranidae: Brown Frogs.

Technical Description: Body size large (to 3 inches). Dorsum reddish brown with smalls light and dark spots. Ventral surface light with yellow wash. Dorsolateral folds weak to prominent. Toe tips dark.

Mountain Yellow-legged Frog (Rana muscosa)

Diet: Flying insects, especially grasshoppers.

Habitat: High alpine streams and ponds

Range: High elevations in the Sierra Nevada Mountains, also isolated population in southern California mountains.

Breeding: Breeds May to August, starting as soon as the ice melts.

Comments: These frogs are having a hard time because of loss of habitat. Wherever trout are present, these frogs disappear. Trout were widely introduced in the west by wildlife management agencies to promote fishing.

Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog in a shallow pond
Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog; note yellow wash and dark toe tips.
Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog
Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog
Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog tadpole.
Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog habitat is high alpine streams and lakes in the Sierra Nevada Mountains that are free of introduced trout. In this case, the pond is at an elevation over 10,000 feet and shallow enough to freeze solid during winter, preventing introduced trout from surviving here.
Mountain Yellow-legged Frog (Rana muscosa)

If you were a tasty flying insect, you'd better hope you never see this face! These guys like the little grasshoppers common in these alpine meadows.

Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog (Rana muscosa)
Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog (Rana muscosa)
Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog (Rana muscosa)
Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog (Rana muscosa)
Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog (Rana muscosa)
Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog (Rana muscosa)
Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog (Rana muscosa)
Mountain Yellow-legged Frog (Rana muscosa) Mountain Yellow-legged Frog (Rana muscosa)
Mountain Yellow-legged Frog (Rana muscosa)
Young frog hiding on the bottom of a rocky stream.
Mountain Yellow-legged Frog (Rana muscosa)
Young frog hiding on the bottom of a rocky stream.
Mountain Yellow-legged Frog (Rana muscosa)
Mountain Yellow-legged Frog tadpole
Mountain Yellow-legged Frog (Rana muscosa)
Mountain Yellow-legged Frog in a small stream

Note: All distances, elevations, and other facts are approximate.
copyright; Last updated 110807

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