Eustrophopsis Champion, 1889

Pollock, Darren, 2008, Review of the Canadian Eustrophinae (Coleoptera, Tetratomidae), ZooKeys 2 (2), pp. 261-290 : 276-277

Eustrophopsis Champion, 1889

Eustrophopsis Champion, 1889: 77 .— Type species: Orchesia quindecimmaculatus Laporte, 1840 ; Champion, 1915: 138; Champion, 1916: 1, 138; Csiki, 1924: 7; Blackwelder, 1945: 494; Nikitsky, 1998: 58; Young and Pollock, 2002: 416.

Eustrophinus Seidlitz, 1898: 438 , 440.— Type species: Mycetophagus bicolor Fabricius, 1798 ; Champion, 1916: 3; Leng, 1920: 238; Leng and Mutchler, 1933: 36; Csiki, 1924: 8; Blackwelder, 1945: 495; Hatch, 1965: 66; Poole and Gentili, 1996: 299; LeSage, 1991: 246; Nikitsky, 1998: 58; Young and Pollock, 2002: 416.

Eustrophus Champion, 1889: 75 , nec. Illiger, 1802.

Champion (1889) erected Eustrophopsis to include species of “Eustrophi” that exhibited a deeply emarginate prosternal process to receive a sharply keeled mesosternum. Seidlitz (1898) included in Eustrophinus , species that lacked this emarginate prosternal process and keeled mesosternum. However, according to Nikitsky (1998), who has studied this group extensively, these characters exhibit a graded transition without a distinct morphological gap. Th erefore, he sunk the name Eustrophinus as a junior synonym of Eustrophopsis Champion.

Eustrophopsis is the most diverse genus of Eustrophinae , with approximately 55 species known from Afrotropical, Neotropical and Nearctic regions. Nikitsky (1998: 58) stated that it is “remarkable that Eustrophopsis seems to be absent both from the Oriental Region and Palearctic. It may be so that it is replaced there by species of the genera Holostrophus and Synstrophus unknown from the Neotropical and Afrotropical regions”.