Curiously, H. affinis may also parasitize rodents in the Neotropics. Ferris (1921, 195l), Johnson (1972a), and Castro (1979) stated that sucking lice morphologically indistinguishable or very similar to European H. affinis have been collected from South American sigmodontine rodents. This would appear to represent a zoogeographical anomaly, but may only reflect inadequate study of the Neotropical samples. Closer scrutiny of those lice is necessary to determine whether or not they represent species different from H. affinis. Some of the Neotropical material previously assigned to H. affinis is now recognized as H. argentina. The species of Apodemus parasitized by H. affinis fall into two monophyletic groups. Some systematists contend that flavicollis and sylvaticus should be in the genus Sylvaemus, and speciosus, agrarius, and chevrieri in the genus Apodemus (Musser and Carleton, 1993: 569). [ex. Durden, L. A., Musser, G. G. 1994. Bulletin of the American Museum of Natural History 218: 1-90]
Rhynchota, Species 10
Taxon Citation Remarks:
Citation information points to the most recent interpretation of the taxon name (not the original, which is absent from the sucking louse checklist).