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Revision of the genus Letana Walker, 1869 (Grylloptera: Tettigonioidea: Phaneropteridae)

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image of Insect Systematics & Evolution

The Oriental genus Letana is fully revised. 22 species are recognised. Male and female abdominal terminalia, the phallus sclerite and the stridulatory apparatus of males are introduced as useful diagnostic characters. Keys for males and females to the species are included. L. brunneri (Krausze, 1904) and L. melanotis Bey-Bienko, 1956 become new synonyms of L. rubescens (StÅl, 1861). Nine new species are described: L. infurcata sp. n., L. bulbosa sp. n., L. megastridula sp. n., L. intermedia sp. n., L. bilobata sp. n., L. magna sp. n., L. digitata sp. n., L. emanueli sp. n., and L. gracilis sp. n. First descriptions are given for the female of L. recticercis Chopard & Dreux and for the male of L. serricauda Ingrisch. The relations between the species are discussed on basis of the phallus sclerite. Faunistic data and distribution maps are added.

Affiliations: 1: Entomologisches Institut, ETH-Zentrum, 8092 Zürich, Switzerland


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