Published online by Cambridge University Press: 31 May 2012
In a previous paper I discussed the character of the female genitalia of the genus Hydriomena in general and more particularly in connection with the glaucata-crokeri group. In the present paper I offer further notes on certain other species of the genus which I have lumped roughly into the ruberata group. All these species show in the male genitalia a deep excavation between the forks of the uncus; each fork tends to broaden toward its apex which is evenly rounded and not bent downward nor pointed.
* Contribution No. 2303, Division of Entomology, Science Service, Department of Agriculture, Ottawa.