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Thirteen species of fleas of the genus Geusibia Jordan, 1932 were included in a cladistic analysis based on morphological characters. The results support Geusibia as a monophyletic group within Ctenophyllus Wagner, 1927 (sensu lato) and there are five diagnostic characters that distinguish Geusibia from related genera of Ctenophyllus (s. l). There is no evidence to support a subgeneric classification...
A new species, Nycteridopsyllaquadrispina, found on the vespertilionid bat Ia io, is described from China. N. iae Beaucournu & Kock, 1992, a new record for China, was also found on the same host. The new species is distinguished by the presence of four spines on the genal comb and by the shape and chaetotaxy of the head.
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