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Chironomid midges have been known to include parthenogenetic species for over a century. One of these species,Paratanytarsus grimmii(Schneider), cited under several different names here shown to be junior synonyms, has attained some notoriety as a pest. Its occurrence as a supposedly paedogenetic (actually pharate adult parthenogenetic) inhabitant of water distribution systems is discussed and related to its more usual occurrence in a variety of small water bodies including aquaria. New synonymy is proposed and a lectotype designated.
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Langton et al. (1988) studied this question.
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