Isoplastus, Horn, 1880

Peck, Stewart B. & Cook, Joyce, 2013, 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), Insecta Mundi 2013 (310), pp. 1-32 : 7

Key to species of male Isoplastus of the continental United States and Canada

1. Paired apices of median lobe of aedeagus each divided at tip ( Fig. 2 ); parameres extending beyond apex of median lobe ( Fig. 2 ); widely distributed, including Florida ..... I. fossor Horn

– Paired apices of median lobe inwardly curved, not divided at tips ( Fig. 3 ); parameres reach apex of median lobe ( Fig. 3 ); Florida .................................... I. floridanus Peck and Cook , n. sp.

Figures

Figures 1–6. Aedeagi, dorsal, of Cyrtusa and Isoplastus species. 1) Cyrtusa subtestacea. 2) Isoplastus fossor. 3) I. floridanus. 4) L. luggeri. 5) L. nigriclavis. 6) L. stephani. Scale line = 0.3 mm.