Genus Mexicoiulus Verhoeff, 1926

Mexicoiulus Verhoeff, 1926:65, 66–67. Jeekel, 1971:166. Hoffman, 1999:158.

Type species. M. dampfi Verhoeff, 1926, by monotypy.

Potential diagnostic features (based on Verhoeff 1926). Posterior gonopod without anterior branch, with one caudal projection bending strongly subanteriad distally; solenomere falcate.

Remarks. Loomis (1968a) placed Mexicoiulus in synonymy under Parajulus on the advice of N. B. Causey, and Hoffman (1980) maintained this status. However, Hoffman (1999) resurrected the taxon and stated that prior synonymies were incorrect; I concur with this action.

Based on similarities to aspects of Verhoeff's illustrations (1926:70, figs. 9–10), I tentatively group " P." stylifer, " P." r. rosanus Chamberlin, 1943, and " P." rosanus gyratus Loomis, 1971, with M. dampfi, but I retain them in " Parajulus " and do not formalize combination with Mexicoiulus .