| author | date | title | journal / publication | Sluys R, Kawakatsu M, & Ponce de León R | 2005 | abs. | Morphological stasis in an old and widespread group of species: Contribution to the taxonomy and biogeography of the genus Girardia (Platyhelminthes, Tricladida, Paludicola) | Studies on Neotropical Fauna and Environment, 40(2):155-180 | 
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| Girardia tigrina (Girard, 1850) | [with synonyms] | w | latest taxonomic authority | 175-177 | 
| Girardia avertiginis Sluys, 2005 | w | primary taxonomic authority (describer) | 159-161; Figs 5-8 | |
| Girardia bursalacertosa Sluys, 2005 | w | primary taxonomic authority (describer) | 161-163; Figs 9-12 | |
| Girardia capacivasa Sluys & Kawakatsu, 2005 | w | primary taxonomic authority (describer) | 163-165; Figs 13-16 | |
| Girardia jugosa Sluys, 2005 | w | primary taxonomic authority (describer) | 170-173; Figs 27-28 | |
| Girardia andina (Borelli, 1895) | [with synonyms] | w | latest taxonomic authority | 157-159; Fig 4 | 
| Dugesiidae Girardia Ball, 1974 | w | other taxonomic work | 156 | |
| Romankenkius patagonicus (Borelli, 1901) | [with synonyms] | w | latest taxonomic authority | 177-178; Figs 31-33 | 
| Girardia anceps (Kenk, 1930) | [with synonyms] | w | latest taxonomic authority | 156-157; figs 1-3 | 
| Girardia chilla (Marcus, 1954) | [with synonyms] | w | latest taxonomic authority | 165-168; Figs 17-21 | 
| Girardia dorotocephala (Woodworth, 1897) | w | latest taxonomic authority | 168-170; Fig 22 | |
| Girardia paramensis (Fuhrmann, 1914) | [with synonyms] | w | latest taxonomic authority | 173-175; Figs 29-30 | 
| Girardia festai (Borelli, 1898) | [with synonyms] | w | latest taxonomic authority | 168-171; Figs 23-26 | 
| Romankenkius michaelseni (Bohmig, 1902) | w | latest taxonomic authority | 155-180 |