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Any small leaping thysanurous insect of the genus Podura and related genera; a springtail. Podura scale (Zoöl.), one of the minute scales with which the body of a podura is covered. They are used as test objects for the microscope.

The division of Thysanura which includes Podura, and allied forms.

The caudal spring used by Podura and related insects for leaping. See Collembola.

Any species of Podura or allied genera. -- a.

1. -- Snow cock (Zoöl.), the snow pheasant. -- Snow flea (Zoöl.), a small black leaping poduran (Achorutes nivicola) often found in winter on the snow in vast numbers. -- Snow flood, a flood from melted snow. -- Snow flower (Bot.), the fringe tree. -- Snow fly, or Snow insect (Zoöl.), any one of several species of…

like a spring, thus enabling them to leap to a considerable distance. See Collembola, and Podura.

ristletails, and the Collembola, or springtails. Called also Thysanoura. See Lepisma, and Podura.