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New genera and new species of Acrometopini (Orthoptera: Tettigonioidea Phaneropterinae) from East Africa and a review of all known stridulatory organs, songs and karyotypes of the tribe

In: Insect Systematics & Evolution
Authors:
Claudia Hemp Biodiversity and Climate Research Centre (BiK-F), Senckenberganlage 25, 60325 Frankfurt (Main), Germany

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Klaus-Gerhard Heller Magdeburg, Germany

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Elżbieta Warchałowska-Śliwa Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Kraków, Poland

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Beata Grzywacz Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Kraków, Poland

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Andreas Hemp Department of Plant Systematics, University of Bayreuth, Bayreuth, Germany

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Two new genera of East African Acrometopini are erected: the monotypic Peronurella n. gen. with P. centralis n. sp. from Miombo woodlands in central Tanzania, and Tenerasphaga n. gen. for a morphological uniform group of species formerly included in Horatosphaga, T. chyuluensis n. sp., T. mbulu n. sp. T. nanyuki, T. nuda n. comb, T. meruensis n. comb, T. tenera n. comb and T. bazeletae n. comb. Additional species are described in the genera Altihoratosphaga, Lamecosoma and Peronura. Keys to African genera of Acrometopini and species of the genus Tenerasphaga are provided. We review the male calling songs and the morphology of the acoustical apparatus and discuss how the morphology of the stridulatory files explains the complicated song patterns and elements. All Acrometopini species showed a plesiomorphic karyotype with a diploid chromosome number of 2n = 31 and a X0 sex chromosome system in males.

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