oa African Entomology - Labiobaetis Novikova & Kluge (Ephemeroptera: Baetidae) from the Afrotropical Region
Labiobaetis Novikova & Kluge is recorded from the Afrotropical Region for the first time. Six new species are descriptionbed: Labiobaetis aquacidus (South Africa and Kenya), L. fabulosus (Madagascar), L. masai (Kenya), L. nadineae (South Africa), L. piscis (South Africa) and L. plumbago (Madagascar). Eight species previously assigned to the genera Baetis Leach, Cymulabaetis McCafferty & Waltz or Pseudocloeon Klapalek are transferred to Labiobaetis: L. balcanicus (Miiller-Liebenau & Soldan), L. boussoulius (Gillies), L. cleopatrae (Thomas & Soldan), L. elouardi (Gillies), L. insolitus (Kopelke), L. kalengoensis (Kopelke), L. mtonis (Gillies), and L. vinosus (Barnard). The last species is redescriptionbed from many additional specimens from South Africa. The wider range of morphological variation and gradation now apparent from the study of Afrotropical species of Labiobaetis indicates that Cymulabaetis is no longer sustainable as a separate genus and is placed as a junior synonym of Labiobaetis. Labiobaetis is distinguished within the Baetis complex of genera by the presence of a distomedial constriction or concavity on maxillary palp segment 2 in the larvae. Most species also possess a distolateral notch on the antennal scapes.
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