Himasthla catoptrophori sp. n. (Trematoda : Echinostomatidae) from willets, Catoptrophorus semipalmatus (Charadriiformes : Scolopacidae), from the Galveston, Texas area Academic Article uri icon


  • During a study of digeneans of shore birds from the Galveston, Texas, area of the Gulf of Mexico, 40% (39 of 99) of willets, Catoptrophorus semipalmatus (Charadriiformes), were found to be infected with an undescribed species of Echinostomatidae (19 per infected host), Himasthla catoptrophori sp. n. The new species can be distinguished from others in the genus by the 40 collar spines, 2 more than the maximum reported previously. The new species most closely resembles H. californiensis and H. rhigedana, but in addition to having 2 more collar spines, H. catoptrophori sp. n. has a smaller ratio of the transverse diameter of the oral sucker to the acetabulum (1:2.0-2.1, as compared to 1:2.8 and 1:2.6-3.0, respectively). It is also smaller than H. californiensis, 18 mm in length as compared to 8 mm.

published proceedings


author list (cited authors)

  • Dronen, N. O., Badley, J. E., & Wardle, W. J.

complete list of authors

  • Dronen, NO||Badley, JE||Wardle, WJ

publication date

  • January 1998