Revision of ground beetles of American genus Cychrus and four subgenera of genus Scaphinotus (Coleoptera, Carabidae). Bulletin of the AMNH ; v. 152, article 2

Abstract

"The present paper is a revision of the subgenera Neocychrus, Stenocantharus, Pseudonomaretus, and Nomaretus of the genus Scaphinotus, and of the American species of the genus Cychrus. The following nomenclatural changes are made: Scaphinotus (Stenocantharus) angusticollis Mannerheim (1824), Scaphinotus (Stenocantharus) velutinus Ménétriés (1844), Scaphinotus (Pseudonomaretus) relictus Horn (1881), and Scaphinotus (Pseudonomaretus) regularis LeConte 91884) are considered to be valid species. Scaphinotus (Pemphus) longipes Casey (1897) is reduced to a junior synonym of Scaphinotus (Stenocantharus) velutinus Ménétriés (1844). The genitalia of both males and females of each species were studied. Some new localities have been added, and maps of distribution, keys, and illustrations are presented"--P. 53.