Abstract

The Western Australian endemic humicolous beetle genus Tympallopatrum Perkins is revised. A key to the four known species is given. Three new species are described: T. aureolum (12 km W. Walpole, Walpole National Park, Mt. Clare), T. callosum (Beedelup National Park, 20 km W. Pemberton), and T. curvicostum (Porongurup National Park, Bolganup Creek). These rare, markedly sculptured beetles were collected from litter and/or fungi, or by pyrethrin fogging of bark, usually near streams or moist habitats. High resolution digital images of the holotypes are presented (online version in color), male genitalia are illustrated, and geographic distributions are mapped.

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