Cubocephalus Ratzeburg 1848

Genus Cubocephalus Ratzeburg, 1848 Cubocephalus Ratzeburg, 1848: 121. Type species: Cryptus fortipes Gravenhorst, 1829 (= Ichneumon distinctor Thunberg, 1822). Monotypic. Ecporthetor Förster, 1869: 184. Type species: Cryptus fortipes Gravenhorst, 1829 (= Ichneumon distinctor Thunberg, 1822). Designated by Ashmead (1900). Pammachus Förster, 1869: 185. Type species: Stenocryptus nigriventris Thomson, 1874. Designated by Viereck (1914). Chaeretymma Förster, 1869: 187. Type species: Cryptus anatorius Gravenhorst, 1829. Included by Schmiedeknecht (1890). Stenocryptus Thomson, 1873: 520. Type species: Stenocryptus nigriventris Thomson, 1874. Original designation. Microcryptus Thomson, 1873: 520. Type species: Cryptus erythrinus Gravenhorst, 1829 (= Ichneumon sperator Müller, 1776). Monotypic. Planocryptus Heinrich, 1949: 35. Type species: Planocryptus mirabilis Heinrich, 1949. Original designation. Four species, C. anatorius (Gravenhorst, 1829), C. associator (Thunberg, 1822), C. atrator (Walker, 1874), and C. nigriventris (Thomson, 1874), have been recorded from Japan. The generic border of this genus and Parmortha is problematic, and the separation of both genera are difficult in the species has intermediate characteristics. Although Townes (1970) separated both genera by the width of areolet, the convergent or parallel conditions of areolet, and the width of clypeus, all of them are somewhat overlapped both genera. In this study, I add two generic borders of them based on the ratio of length of areolet and vein 2m-cu and the length of FL I (see below key). In this study, I newly describe six new species below and provide the key to Japanese species of Cubocephalus and Parmortha as a single key below.