Amphibian parasitism by the Leech Desserobdella picta at a small pasture pond in northwest Arkansas

The leech Desserobdella picta was found on amphibian hosts in a small pond in Washington County, Northwest Arkansas, from February through May 1996. I n addition to occurrence of D. picta, we recorded anatomical position of le ech attachment on amphibians. We found D, picta on six species of amphibian s, including four anurans and two salamanders, with the first documented re port of the host Rana utricularia (adults and tadpoles). Desserobdella pict a showed a strong preference for adult Bufo americanus with greatest attach ment in the axillary region of the front limb. Adult B. americanus may not only be the preferred host of adult D. picta but also might influence dispe rsal of this leech.