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Species Diplotaxis schaefferi

Diplotaxis schaefferi Fall, 1909 - Diplotaxis schaefferi Diplotaxis schaefferi Fall, 1909 - Diplotaxis schaefferi Diplotaxis schaefferi Fall - Diplotaxis schaefferi
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
Superfamily Scarabaeoidea (Scarab, Stag and Bess Beetles)
Family Scarabaeidae (Scarab Beetles)
Subfamily Melolonthinae (May Beetles and Junebugs)
Tribe Diplotaxini
Genus Diplotaxis
Species schaefferi (Diplotaxis schaefferi)
Explanation of Names
Diplotaxis schaefferi Fall, 1909
Charles Schaeffer (1860-1934) provided 4 spmns to Fall.
Size
7.5-8 mm (1)
Identification
Per Vaurie (1960): Small (7.5 to 8 mm), pronotum flat, narrow; elytra so densely and irregularly punctured that costae and intervals are confused, not distinct (only three specimens examined) (1)
Par Fall (1909): In the male the tarsal claws are relatively longer and more slender than in any other species known to me except D. macronycha. The eyes are also noticeably larger and the hind thighs more slender in the male. The irregularity of punctuation of the elytral costae is a very exceptional character and is so marked on the second costa as to greatly obscure it. (Fall, 1909)
Range
endemic to the Edwards Plateau of c. TX (2) (known from four counties: Comal, Llano, Mason, Medina)
Remarks
Type Locality: New Braunfels, Comal Co., Texas. Vaurie (1960) added one spmn from Llano County. (1) Riley & Wolfe (2003) examined specimens from Mason and Medina counties. (2) TAMUIC has 23 spmns, most all determined by McCleve in 1996, 18 spmns are from Mason Co. and 5 spmns from Medina Co. (3)
See Also
Similar in some characters (color, shape, long tarsi, short labrum, flat mentum) to many species of the trapezifera group, but lacking the hairs on the clypeus that characterize that group. Resembles also pinalica (misella group) but differs by having the front angles of the clypeus rounded, not acute (they are also rounded in females of pinalica), a differently shaped pronotum (sides widest at, not behind, the middle and front angles not drawn forward), the eyes not sunk but level with the head, and the elytral costae virtually obscured by the dense maze of punctures. (1)
Print References
Fall, H.C. 1909. Revision of the species of Diplotaxis of the United States. Transactions of the American entomological Society 35: 1-97. (Full PDF)
Riley, E.G. & C.S. Wolfe. 2003. An annotated checklist of the Scarabaeoidea of Texas. Southwestern Entomologist, Supplement, no. 26. 37 pp. (2)
Vaurie, P. 1960. A revision of the genus Diplotaxis (Coleoptera, Scarabaeidae, Melolonthinae). Part 2. Bulletin of the American Museum of Natural History 120: 161-434.
Works Cited
1.A revision of the genus Diplotaxis (Coleoptera, Scarabaeidae, Melolonthinae), Parts 1 and 2.
Patricia Vaurie. Bulletin of the American Museum of Natural History.
2.An annotated checklist of the Scarabaeoidea of Texas.
Edward G. Riley & Charles S. Wolfe. 2003. Southwestern Entomologist, Supplement. 37 pp.
3.Texas A&M University Insect Collection (TAMUIC)