42 



421 



421 



421 



(0) 



(0) 



(0) 



(0) 



FIELD E; Taxonomy Code 

 Columns 18, 19, ZQ, 21, 

 22, 23, 24, and 25 



Distomata*, a suborder of order Prosostomata. Not recognized in the scheme used 



here in which "distome" Digenea are in each of the five orders recognized by 



Symbols 421, 422, 423, 424, and 425, except that the Strigeata, Symbol 422, have 



ordinarily been considered separate from "Distomata". A reference to a "distome 



trematode" can be coded only as Symbol 42. 

 Monostomata*, a suborder of order Prosostomata. Not recognized in the scheme used 



for code symbols here. Examples of "monostome" Digenea are in the superfamily 



Notocotyloidea, Symbol 421. 

 Amphistomata*, a suborder of order Prosostomata. Not recognized in this scheme in 



which "amphistome" families are included under superfamily Paramphistomatoidea, 



Symbol 421. 

 Fascioloidea, superfamily of suborder Distomata. The superfamily Fascioloidea is 



not recognized in this scheme in which its families are included in the superfamily 



Echinostamatoidea, Symbol 421. 

 Echinostomida, order of superorder Anepitheliocystidia 

 Echinostomata, suborder of superorder Echinostomida 

 Echinostomatoidea, superfamily of suborder Echinostomata 

 Echinostomatidae, family of superfamily Echinostomatoidea 



Fasciolidae, family of superfamily Echinostomatoidea (or of superfamily Fascioloidea) 

 Fasciola hepatica 

 Liver fluke 



Paramphistomata, suborder of order Echinostomida 

 Paramphistomatoidea, superfamily of suborder Paramphistomata 

 Notocotyloidea, superfamily of suborder Paramphistomata 

 Strigeatoidea, order of superorder Anepitheliocystidia 

 Strigeata, a suborder of order Strigeatoidea 

 Strigeata, a suborder of order Prosostomata. (Equivalent to Strigeata as a suborder of 



order Strigeatoidea, Symbol 422. ) 

 Schistosomatoidea, superfamily of suborder Strigeata 

 Schistosomatidae, family of superfamily Schistosomatoidea 

 Schistosoma mansoni 

 Schistosoma japonicum 

 Schistosoma haematobium 

 Schistosomatium douthitti 



Brachylaimata, suborder of order Strigeatoidea 

 Bucephaloidea, superfamily of suborder Brachylaimata 

 Gasterostomata, suborder of order Digenea. The suborder accommodated the single 



family Bucephalidae which is considered in this scheme as a member of order 



Strigeatoidea, Symbol 422. 

 Gasterostomata, order of subclass Digenea. (Equivalent to Gasterostomata as a 



suborder of order Digenea. ) 

 Renicolida, order of superorder Anepitheliocystidia 

 Epitheliocystidia, superorder of subclass Digenea 

 Opisthorchiida, order of superorder Epitheliocystidia 

 Opisthorchiata, suborder of order Opisthorchiida 

 Opisthorchioidea, superfamily of suborder Opisthorchiata 

 Opisthorchioidea, superfamily of suborder Distomata. (Distomata is not recognized 



in this scheme. ) (Equivalent to Opisthorchioidea, Symbol 424, superfamily of 

 suborder Opisthorchiata. ) 

 Opisthorchiidae, family of superfamily Opisthorchioidea 

 Clonorchis sinensis 

 Heterophyes heterophyes 

 Plagiorchlida, order of superorder Epitheliocystidia 



The terms, monostome, amphistome, distome, holostome, echinostome, etc. , are commonly used 

 as convenient designations of the distinctive forms of adult digenetic trematodes. However, this 

 characteristic of the adult has long been abandoned as a major or strict taxonomic criterion and the 

 groups designated as Monostomata, Amphistomata, and Distomata are therefore no longer generally 

 accepted as valid. Any of these designations must be coded by the symbol for its nearest equivalent, 

 as indicated in the list above. 



422 



- 31 



