oa African Entomology - The immature stages and phylogenetic position of Nilodosis Kieffer, an Afrotropical genus of Chironomini (Diptera: Chironominae)



The immature stages of Nilodosis fusca Kieffer, the type species of the Afrotropical genus Nilodosis Kieffer, are recorded for the first time and complete diagnoses are provided. The larva, pupa and female of N. fusca are descriptionbed and illustrated, and the male hypopygia are redescriptionbed. The second known species, N. grisea Freeman, is redescriptionbed and illustrated from the male adult, the only known stage, and its congenericity is discussed. A phylogenetic position for Nilodosis close to the South American! Australian Fissimentum Cranston & Nolte is postulated, and the consequences for recognition and differentiation are discussed. This study provisionally associates Nilodosis with previously reported but unallocated larvae, providing some inference to their ecology.


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