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.