The species of the genus Dirofilaria, Railliet & Henry, 1911.

Some authors divide the genus Dirofilaria into two subgenera. The subgenus Dirofilaria consists of 5 apparently valid species (D. ailure, D. freitasi, D. immitis, D. lutrae, D. spectans) and 7 species of questionable validity (D. fausti, D. indica, D. louisianensis, D. magalhaesi, D. nasuae, D. pongoi, D. spirocauda). The subgenus Nochtiella consists of 22 apparently valid species (D. acutiuscula, D. bonnei, D. cancrivori, D. corynodes, D. genettae, D. granulosa, D. incrassata, D. linstowi, D. macacae, D. macrodemos, D. magnilarvatum, D. minor, D. pagumae, D. panamensis, D. repens, D. sachsi, D. striata, D. subdermata, D. sudanensis, D. tawila, D. tenuis, D. ursi) and 8 species of questionable validity (D. aethiops, D. andersoni, D. conjunctivae, D. desportesi, D. hystrix, D. schoutedeni, D. spinosa, D. subcutanea). Actually, 10 species of the genus Dirofilaria (D. asymmetrica, D. digitala, D. kuelzii, D. ochmanni, D. pauliani, D. roemeri, D. scapiceps, D. timidi, D. uniformis, D. websteri) are attributed to other genus.