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Crassabwa : a new genus of small minnow mayflies (Ephemeroptera : Baetidae) from Africa

Published online by Cambridge University Press:  01 February 2009

C. R. Lugo-Ortiz  and
W. P. McCafferty
C. R. Lugo-Ortiz
Affiliation:
Department of Entomology, Purdue University, West Lafayette, IN 47907 USA
W. P. McCafferty
Affiliation:
Department of Entomology, Purdue University, West Lafayette, IN 47907 USA
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Abstract

Crassabwa Lugo-Ortiz & McCafferty (Ephemeroptera : Baetidae), n. gen., is erected for a small monophyletic group of distinctive Afrotropical species previously assigned to Afroptilum Gillies and Centroptilum Eaton, including C. badia (Kopelke), n. comb., C. flava (Crass), n. comb. (type species), C. loweae (Kimmins), n. comb., and C. vitrea (Navás), n. comb. Larvae of Crassabwa are distinguished by possessing a thumb-like distomedial process on labial palp segment 2, a proximal arc of setae on the tibiae, two enlarged subapical denticles in the tarsal claws, and seven gill pairs with posteriorly oriented tracheae and anterodistal marginal serration. Adults are distinguished by possessing hindwings with two longitudinal veins and an elongate, acute costal process, and a robust segment 3 of the male genital forceps. The larval stage of C. flava is redescribed, and new figures are provided to illustrate previously overlooked characters.

Keywords

ephemeropterabaetidaecrassabwa badiac. flavac. loweaec. vitreanew genusnew combinationsAfricaephemeropterabaetidaecrassabwa badiac. flavac. loweaec. vitreagenre nouveaucombinaisons nouvellesAfrique
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 32 , Issue 4 , December 1996 , pp. 235 - 240
Copyright
© Université Paul Sabatier, 1996

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