oa Journal of the Entomological Society of Southern Africa - Trypetid flies (Diptera) associated with the Calendulae, plants of the family Compositae in South Africa. I. A bio-taxonomic study of the genus Mesoclanis
Since a species is a population, it can only be fully understood by a study of its morphology, taxonomy and biology. For this, however, much material and data are needed, but it may be years before these are available. When the genus Mesoclanis was erected, a rather detailed descriptionption was given, so that the salient characters may have been somewhat obscured. Authors seem to have misinterpreted it, going so far as to place Paroxyna, an older genus, as a sub-genus of it. The grouping of the species as a bio-taxonomic entity has apparently been ignored. The accumulation of more material and data has tended on the whole to complicate the position.
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