Systematics and distributions of the genera Cyrtusa Erichson, Ecarinosphaerula Hatch, Isoplastus Horn, Liocyrtusa Daffner, Lionothus Brown, and Zeadolopus Broun of the United States and Canada (Coleoptera: Leiodidae: Leiodinae: Leiodini) Author Peck, Stewart B. Author Cook, Joyce text Insecta Mundi 2013 2013-06-28 2013 310 1 32 journal article 4974 10.5281/zenodo.5193714 8df27694-d6a3-43d8-8a92-a085ef706e26 1942-1354 5193714 1CC5FBEF-1373-444C-AA1C-0E80445A7B6E The Cyrtusa genus-group The Cyrtusa genus group is defined as Leiodini having a mesosternum that rises vertically between the mesocoxae ( Brown 1937a: 158 ; Newton 1998: 86 ; Peck 2001: 252 ). In the continental United States and Canada the “ Cyrtusa genus group” is composed of the genera Anogdus LeConte , Cyrtusa Erichson , Isoplastus Horn , Liocyrtusa Daffner , Lionothus Brown , and Zeadolopus Broun. This is in contrast to members of the “ Leiodes genus-group” that have the anterior margin of the mesosternum lying obliquely between the mesocoxae, and whose North American members are Ecarinosphaerula Hatch and Leiodes Latreille.