DIGENETIC TREMATODES 51 



Morphology: Macy and Moore (1958) redescribed and figured the worm from 

 material in Oregon. 



Biology: Xiphidiocercariae develop in Lymnaea bulminoides, encyst in the sporo- 

 cyst or in various species of insect, and develop to maturity in the hamster 

 (experimentally) (Macy and Moore, 1958). Adults have been found in 

 shrews in both Montana and Alaska, but apparently not in the area included 

 in this checklist. 



Plagiorchis proximus Barker, 1915 



Host: Ondatra zibethica B.C. Knight, 1951 



Reported only from Miistela vison from other areas by Barker (1915). 



Plagiorchis vespeitilionis parorchis Macy, 1960 



Synonyms : Fasciola vcspcrtUionis MiJller, 1784 

 Distoma vcspcrtUionis of Zeder, 1803 

 D. lima Rudolphi, 1809 

 Lepoderma vcspertilionis of Looss, 1899 

 Plagiorchis vespertilionis (Miiller, 1784) Braun, 1900 



Hosts : Myotis lucifugiis alascensis Wash. Macy, 1960 



Mus musculus (experimental) Macy, 1956 



Lymnaea stagnalis Wash. Macy, 1956 



Ephemerid larvae (experimental) 

 Trichopterous larvae (experimental) 

 Dragon fly nj-mphs (experimental) 

 Cidcx mosquito larvae (experimental) 



Biologj- : Xiphidiocercariae develop in Lymnaea stagnalis, encyst experimentally 

 in four different sorts of immature insects, and develop experimentally in 

 w^hite mice. Macy (1960) decided that this form was a subspecies of the 

 widely distributed Plagiorchis vespertilionis instead of a separate species as 

 he had indicated in an abstract (Macy, 1956). 



Telorchis corti Stunkard, 1915 



Synonyms: Telorchis linstowi Goldberger, 1911, nee Stossich, 1890 

 Telorchis lobosus Stunkard, 1915 

 Telorchis insculpti MacCallum, 1918 

 Telorchis guttati MacCallum, 1918 

 Telorchis chelopi MacCalluin, 1918 

 Telorchis pallidus MacCallum, 1918 

 Telorchis angustus MacCalum, 1821, nee Stafford, 1900 

 Cercorchis corti (Stunkard, 1915) Perkins, 1928 

 Telorchis stenoura Ingles, 1930 

 Cercorchis texanus Harwood, 1932 

 Cercorchis mcditis McMulIen, 1934, ncc Stunkard, 1915 



Above synonymy after Wharton, 1940. 



