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Tesarius Rakovic 1981
Tesarius Rakovic 1981: 27.

Tesarius caelatus (LeConte)
Photo by Paul Skelley.


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Type species. Phycochus sulcipennis Lea 1904: 89, by original designation.

Diagnosis. Body length 2.8-3.6 mm, globose, dark reddish-brown to black, dorsal surfaces glabrous. Head surface granulate, frontal suture present, often indistinct, eyes greatly reduced. Clypeus rounded each side of median emargination. Pronotum with vestiges of 3 transverse grooves, some indicated by irregular rows of punctures. Elytra shortened, rounded, base margined; intervals flattened to moderately convex, interval 10 present well into apical quarter of elytra. Metafemur robust. Metatibia curved, greatly widened at apex; with complete median transverse carina prominent. Metatarsi shortened; basal segment triangular. Hind wing reduced to strap.
Distribution. Western North America and Tasmania, introduced into England (Johnson 1975), Chile (Skelley 2001), New Zealand (Stebnicka 2001).
Composition. Worldwide, Tesarius contains 5 species, 4 of which occur in the New World.

Tesarius caelatus
(LeConte 1857: 42) [Aegialia], W-N.Amer.; N. Zeal., UK and Chile (introduced, Stebnicka 2001, Johnson 1975, Skelley 2001).
Tesarius doyeni (Cartwright 1977: 281) [Psammodius], CA-USA.
Tesarius mcclayi (Cartwright 1955: 448) [Psammodius], CA-USA.
Tesarius oregonensis (Cartwright 1955: 445) [Psammodius], CA to WA-USA.
Life History. Adults are sifted from sand dunes, both inland and coastal in the western US.
Larvae. The larva of T. oregonensis has been described in Ritcher (1966).

Rakovic, M. 1984. A review of the genus Tesarius Rakovic (Coleoptera, Scarabaeidae, Aphodiinae). Acta Entomologica Bohemoslovaca 81: 448-452.
Ritcher, P.O. 1966. White grubs and their allies: A study of North American scarabaeoid larvae. Oregon State University Press, Corvallis, Oregon. Studies in Entomology 4: 219 pp.

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Author: Paul Skelley

Generated on: 09/MAY/08.....Last modified: 09/MAY/08
University of Nebraska State Museum - Division of Entomology