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Rhagovelia of Madagascar and adjacent Indian Ocean islands (Heteroptera: Veliidae), Part 2: Revision of the tesari species group

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Riffle bugs in the genus Rhagovelia have diversified extensively on the island of Madagascar. The current paper defines and segregates a distinct set of species within this endemic assemblage as the tesari species-group, containing the previously described species R. tesari Hoberlandt, R. adrienneaebrasili Poisson, R. hovana Hoberlandt, R. abalienata Hoberlandt, R. tsaratananae Poisson, and R. mohelii Poisson (originally described as a subspecies of R. tesari but here raised to full species status), as well as the following 13 new species described herein: R. aquacola n. sp., R. ambra n. sp., and R. sahabe n. sp. from northern Madagascar; R. mandraka n. sp., R. faratsihoi n. sp., and R. wenzeli n. sp. from central Madagascar; R. enckelli n. sp., R. takona n. sp., R. manga n. sp., R. brincki n. sp., and R. sandoka n. sp. from eastern Madagascar; R. andringitrae n. sp. from south-central Madagascar; and R. mondena n. sp. from southeastern Madagascar. Rhagovelia tesari flavomarginataHoberlandt 1951 is synonymized under R. adrienneaebrasiliPoisson 1945. Figures of key morphological characters, including male parameres are provided for all species, accompanied by distribution maps.


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