Uchuca Giglio-Tos, Dectinomima Caudell and Their Allies (Orthoptera: Tettigoniidae: Conocephalinae)

This paper addresses the phylogenetic relationships of the tettigoniid genera Dectinomima Caudell and Uchuca Giglio-Tos. A new species is named of Dectinomima and the genus redescribed. Males of this genus present the odd characteristic of a stridulatory file with extreme tooth density: > 600 tee...

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Bibliographic Details
Published in:Transactions of the American Entomological Society (1890) 2003-12, Vol.129 (3/4), p.503-537
Main Authors: Montealegre-Z, Fernando, Morris, Glenn K.
Format: Article
Language:English
Subjects:
Dectinomima
Female animals
Femur
Genitalia
Holotypes
Legs
Male animals
Ovipositor
Paratypes
Scrapers
Tettigoniidae
Tibia
Uchuca
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Summary:This paper addresses the phylogenetic relationships of the tettigoniid genera Dectinomima Caudell and Uchuca Giglio-Tos. A new species is named of Dectinomima and the genus redescribed. Males of this genus present the odd characteristic of a stridulatory file with extreme tooth density: > 600 teeth. Four new species of Uchuca are described, all alate. In four the vestigial file of the right tegmen is well developed; the functional file in two species terminates suddenly, well short of the wing base, something not seen before in a katydid. This paper contains a revision of the genus Dectinomima, with description of the male of D. jenningsi and of a new species: D. sagittata. Based on the male genitalia, Dectinomima differs considerably from Uchuca. Both genera appear to be closely related monophyletic groups, as previously thought, but they are members of a larger generic complex, incorporating the genus Paranelytra and several undescribed genera from the New World. A complete analysis of their calling songs accompanies detailed descriptions of two of the new Uchuca spp. These acoustic signals are ultrasonic and present considerable interspecific variation in quality factor (Q).
ISSN:0002-8320