Philorhizus Hope, 1838

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 805-806

Genus Philorhizus Hope, 1838

Philorhizus Hope, 1838: 63. Type species: Carabus fasciatus Paykull, 1790 (= Carabus sigma Rossi, 1790) by original designation. Etymology (original). Anagram of the generic name Risophilus (as Rizophilus ), derived from the Greek philos (beloved) and rhiza (root) [masculine].

Dromiolus Reitter, 1905: 230, 235. Type species: Dromius nigriventris Thomson, 1857 (= Dromius notatus Stephens, 1827) by original designation. Etymology. From the generic name Dromius [q.v.] and the Latin suffix - olus (diminutive) [masculine].

Similidromius Mateu, 1953: 140. Type species: Dromius elliptipennis Wollaston, 1864 by monotypy. Synonymy established by Machado (1992: 519). Etymology. From the Latin adjective similis, - e (like) and the generic name Dromius [q.v.], alluding to the resemblance of the species in the hands of Mateu to those of Dromius [masculine].

Diversity.

About 50 species (Lorenz 2005: 477) in the Nearctic (two species, one of them adventive), Oriental (two species), Palaearctic (about 35 species, 15 of them endemic to the Canary and Madeira Islands), and Afrotropical (11 species) Regions.

Identification.

Bousquet (2004b: 49-51) commented on the structural differences between the two species found in North America.