Pygidiopsis spp

From Dog
Adult Pygidiopsis summa[1]

Pygidiopsis spp are parasitic intestinal trematode of dogs found throughout Asia, Europe and Egypt[2].

Species which have been reported in dogs include:

  • Pygidiopsis summa
  • Pgyidiopsis genata
  • pygidiopsis spindalis

There have been no reported cases of clinical symptoms associated with infection in dogs, although in humans, enteritis and pancreatitis have occurred[3].

Dogs become infected with Pygidiopsis by eating raw fish[4].

Treatment would be effective empirically with oral doses of praziquantel at 5 mg/kg on a monthly basis.


  1. Chai JY et al (2002) Surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adult flukes. Korean J Parasitol 40(3):107-112
  2. Shin EH et al (2009) Intestinal helminth infections in feral cats and a raccoon dog on Aphaedo Island, Shinan-gun, with a special note on Gymnophalloides seoi infection in cats. Korean J Parasitol 47(2):189-191
  3. Kim DG et al (2006) Heterophyid metacercarial infections in brackish water fishes from Jinju-man (Bay), Kyongsangnam-do, Korea. Korean J Parasitol 44(1):7-13
  4. Bowman, DD (2003) Feline clinical parasitology. Iowa University Press, Iowa. pp:118-119