PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON 110(2):285-300. 1997. A new subgenus and four new species of Gliricola (Phthiraptera: Gyropidae) from Caribbean hutias (Rodentia: Capromyidae) Roger D. Price and Robert M. Timm (RDP) Department of Entomology, University of Minnesota, St. Paul, Minnesota 55108, U.S.A. (Current address) 4622 Kinkead Ave., Fort Smith, Arkansas 72903-1947, U.S.A.; (RMT) Natural History Museum and Department of Systematics & Ecology, University of Kansas, Lawrence, Kansas 66045-2454, U.S.A. (direct reprint requests to RMT). Abstract. — A new subgenus, Hutiaphilus (Phthiraptera: Gyropidae), is described for five previously named species of Gliricola (G armatus, G. capromydis, G. cubanus, G. ewingi, and G omahonyi) and four new species (G. rabbi, with the type host Geocapromys ingrahami; and G pinei, G schwartzi, and G wernecki, all with the type host Mysateles melanurus melanurus). We redescribe and illus-trate the previously described species, and provide a key for the identification of these nine species. The nine species of Hutiaphilus are restricted to the caviomorph rodent family Capromyidae, the West Indian hutias. This chewing louse-host as-sociation is parallel to other louse-host associations we have documented for ca-viomorph rodents in that there are two (and in one case, three) species of lice on each host species and typically two even on single host individuals. Hutiaphilus is a derived clade well supported by several synapomorphic features. Its position within the genus Gliricola suggests that the family Capromyidae may be nested within what is now recognized as the Neotropical family Echimyidae. Resumen. — Se describe Hutiaphilus, un nuevo subgenera de Gliricola (Phthir-aptera: Gyropidae). Se incluyen en Hutiaphilus cinco especies de Gliricola ya descritas (G armatus, G. capromydis, G cubanis, G ewingi y G omahonyi) y quatro especies nuevas (G. rabbi, con el hospedero tipico Geocapromys ingra-hami', y G. pinei, G schwartzi y G wernecki, las tres con el hospedador tipico Mysateles melanurus melanurus). Se redescriben las especies anteriormente des-critas, incluyendo ilustraciones. Ademas se presenta una clave de identificacion de las nueve especies, que se restringen a la familia de roedores caviomorfos Cap-romyidae, las jutias antillanas. Las relaciones piojo/hospededor de estas especies se aproximan a las que hemos documentado de otros roedores caviomorfos, por tener dos (y en un caso hasta tes) especies de piojos en cada especie hospededor, incluso en un solo individuo hospededor. Hutiaphilus es un clado derivido bien apoyado por varios caracteres sinapomorficos. Su position dentro del genero Glir-icola sugiere que la familia Capromyidae posiblemente se encuentre filogeneti-camente dentro de lo que actualmente se reconoce como la familia neotropical Echimyidae. The chewing louse genus Gliricola rodent families Capromyidae, Caviidae, and Mjoberg (Phthiraptera: Gyropidae) is re-Echimyidae — caviomorph rodents of the stricted in its distribution to the New World Caribbean islands and Central and South