'n Taksonomiese studie van die erythraeoidea en calyptostomatoidea [acari, parasitenini] van die Ethiopiese wyk
Van Huyssteen, Johan Abraham
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A revision of the systematics of the Erythraeoidea and Calyptostomatoidea is given in an effort to clarify the position of the different genera and the higher taxons to such an extent that any revision of these two superfamilies in the future will fit into this framework. A complete control list of species is not attempted: first, because it is doubtful whether this can be achieved for some of the regions, unless the type material were accessible, or, in cases where the original material has for some or other reason been lost fresh material from the same habitat could be obtained. Secondly, the earlier descriptions of the Erythraeoidea and Calyptostomatoidea (for all the continents) are so incomplete that it is difficult, or well nigh impossible, to place the different species in their correct genera with any degree of certainty. Another factor is the in= accessibility of important overseas collections, viz. that of Berlese in Florence. A fourth problem of nomenclature is encountered with certain ill-defined taxons, viz. that of Oudeman 1s in his last publication on the Erythraeoidea (1941), in which he attempted to erect new taxons for certain unrecognisable descriptions made in byegone days, eg. by Hermann (1804) and Koch (1837). The recommendations and decisions of the International Commission of Zoological Nomenclature and other recent proposals are used as guidance .