Diactis Loomis, 1937

Shelley, Rowland M. & Richart, Casey H., 2014, Tynommatidae, n. stat., a family of western North American millipeds: Hypotheses on origins and affinities; tribal elevations; rediagnoses of Diactis Loomis, 1937, and Florea and Caliactis, both Shelley, 1996; and description of D. hedini, n. sp. (Callipodida: Schizopetalidea), Insecta Mundi 2014 (340), pp. 1-19 : 5

Genus Diactis Loomis, 1937

Diactis Loomis, 1937:110–111 . Chamberlin and Hoffman, 1958:112. Buckett, 1964:14. Jeekel, 1971:97. Hoffman, 1980:121; 1999:203. Shelley, 1996:40–41; 2002a:106. Stoev et al. 2008:37.

Etiron Chamberlin, 1941:21 . Chamberlin and Hoffman, 1958:113. Buckett, 1964:15. Jeekel, 1971:98.

Type-species. D. soleata Loomis, 1937 , by original designation.

Diagnosis (adapted from that of Shelley [1996]). Telopodal stem sublinear to gently curved, with either subbasal prefemoral process or process ‘B’, apparent homologue, arising distad; tibiotarsus slender and gently curved, either distalmost projection, coaxial and subcontinuous with stem, or shorter than solenomere branch and subperpendicular to stem; solenomere branch redivided, process ‘A’ present and variably long, either perpendicular to stem and longer than tibiotarsus or coaxial with latter and directed distad to form distalmost projection, solenomere longer than process ‘A’; process ‘B’, apparently representing relocated prefemoral process, variable in both position and configuration, either arising basally from solenomere branch or from telopodal stem at level of, or proximal to, latter.

Species. Eight are known in addition to D. hedini – D. soleata , frondifera , and triangula , all by Loomis (1937); and D. amniscela , cupola, jacinto, procera, and strumella, all by Shelley (1996) – but more surely exist within the subfamilial range area.

Distribution. Same as that of the subfamily.