Revision of Genus Haplosporidium and Restoration of Genus Minchinia (Haplosporidia, Haplosporidiidae)*

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Abstract
SYNOPSIS. Genus Haplosporidium Lühe, 1900 (=Aplosporidium Caullery & Mesnil, 1899) now contains an incoherent group of about 25 species with spores of very diverse morphological types or with spores unknown. Therefore, such limited revision of the genus as present knowledge permits is proposed. H. scolopli (C. & M., 1899) Lühe, 1900, is selected from the two genosyntypes as type species. An essential generic character is that the anterior end of the spore opens like a lid to provide an orifice for emergence of the sporoplasm. The following nine species are rejected because their spores seem to lack the lid (operculum, clapet): H. mytilovum Field, 1924; H. gammari Van Ryckeghem, 1930; H. aulodrili Jírovec, 1940; H. ecdyonuris Weiser, 1947; H. bayeri Weiser, 1947; H. aselli Pflugfelder, 1948, H. tapetis Vilela, 1950; H. periplanetae Georgevitch, 1953; H. typographi Weiser, 1954. H. chitonis (Lankester, 1885) Debaisieux, 1919, must, in accordance with the law of priority, be put back into genus Minchinia which was created for it by Labbé in 1896 and erroneously suppressed by Debaisieux in 1919. Therefore, its correct name is M. chitonis (Lankester, 1885) Labbé, 1896, and genus Minchinia is restored. The type species of Haplosporidium and Minchinia, H. scolopli and M. chitonis, are deemed to have distinctive characters of generic rank which justify conserving both genera. Species with the lid lying over the orifice, rather than in it, and extending beyond the perimeter of the orifice are transferred from Haplosporidium to Minchinia. The latter then contains eight species: M. chitonis (Lankester, 1885) Labbé, 1896; M. limnodrili (Granata, 1913); M. nemertis (Debaisieux, 1919); M. cernosvitovi (Jírovec, 1936); M. dentali (Arvy, 1949); M. sp. (Sprague, 1954); M. pickfordae (Barrow, 1961); M. costalis (Wood and Andrews, 1962). Left in Haplosporidium, with reservation in the last two cases, are eight species: H. scolopli (C. & M., 1899) Lühe, 1900; H. heterocirri (C. & M., 1899) Lühe, 1900; H. vejdovskyi C. & M., 1905; H. marchouxi C. & M., 1905; H. potamillae C. & M., 1905; H. caulleryi Mercier & Poisson, 1922; H. ascidiarum Duboscq & Harrant, 1923; H. sp. Dehorne, 1935.