Abstract
The genus Eurhoptus LeConte, 1876 is revised for America north of Mexico. Eight species are recognized including E.pyriformis LeConte, 1876, E.sordidus (LeConte, 1876), E.curtus (Hamilton, 1893), resurrected name, and five new species as follows: E.rileyi new species (type locality, Texas, Hidalgo County, Bentsen Rio Grande State Park), E.imbricatus new species (type locality, Texas, Bandera County, Lost Maples State Natural Area), E.cariniventris new species (type locality, Texas, Bandera County, Lost Maples State Natural Area), E.occidentalis new species (type locality, Texas, Brewster County, Big Bend National Park), and E.aenigmaticus new species (type locality, Alabama, Winston County, Bankhead National Forest). Descriptions or redescriptions, and images of taxonomically important structures are presented for all species. A key to the eight species is included.
Highlights
The genus Eurhoptus was established by LeConte in 1876 for the species E. pyriformis LeConte, 1876
Blatchley and Leng (1916) noted the presence of a deep triangular polished impression on the first ventrite in E. pyriformis but did not notice the similar impression in A. sordidus LeConte, 1876, likely because specimens are often encrusted in dirt, and left this latter species in Acalles
One of these, referred to below as E. cariniventris n. sp., was not represented by molecular data, but appears justifiably distinct based on male genitalia
Summary
The genus Eurhoptus was established by LeConte in 1876 for the species E. pyriformis LeConte, 1876. 29 Mar 1974, litter (1, CWOB); Laurel Co.: Bald Rock Picnic Area (37.03, -84.22), C.E. Carlton, 4 Apr 1991, hardwood berlese (1, ASUIC); Whitley Co.: 1.6 km.
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