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Validity of Homalodisca and of H. vitripennis as the Name for Glassy-Winged Sharpshooter (Hemiptera: Cicadellidae: Cicadellinae)

Authors: Takiya, Daniela M.; McKamey, Stuart H.; Cavichioli, Rodney R.

Source: Annals of the Entomological Society of America, Volume 99, Number 4, July 2006 , pp. 648-655(8)

Abstract:

A male of Tettigonia vitripennis Germar—deposited in the recently rediscovered Germar Hemiptera collection, in the Ivan Franko National University (Ukraine)—is designated as the lectotype and assumed to be erroneously labeled as from Brazil. Homalodisca vitripennis is considered a senior synonym of Tettigonia coagulata syn. nov. and therefore should be used as the scientific name for the glassy-winged sharpshooter, a major vector of the bacterial Pierce's disease of grapes, phony peach disease, plum leaf scald, and oleander leaf scorch in southern United States and northern Mexico. The previously designated type species of Homalodisca Stål, Cicada triquetra F., was found to be mistaken by Stål for C. triangularis F., which is herein fixed as the new type species of this economically important genus. Propetes triquetra comb. nov., previously known only from an unknown locality in South America, is newly recorded from Brazil (Mato Grosso and Pará states).RESUMO: Um espécime macho de Tettigonia vitripennis Germar—depositado na coleção de Hemiptera de Germar previamente considerada perdida, mas recentemente localizada na Universidade Nacional de Ivan Franko (Ucrânia)—é aqui designado como lectótipo e considerado erroneamente etiquetado como coletado no Brasil. Homalodisca vitripennis é considerada o sinônimo sênior de Tettigonia coagulata syn. nov., consequentemente tal nome científico deve ser utilizado para designar a “glassy-winged sharpshooter” [ = cigarrinha de asas vítreas], o principal vetor de doenças bacterianas de uvas, pêssegos, ameixas e Nerium oleander (L.) no sul dos Estados Unidos e norte do México. A espécie-tipo de Homalodisca Stål designada previamente, Cicada triquetra F., foi identificada errôneamente por Stål pela espécie C. triangularis F., a qual é aqui fixada como a nova espécie-tipo desse gênero. Propetes triquetra comb. nov., conhecida previamente somente de uma localidade não especificada na América do Sul, é aqui registrada pela primeira vez para o Brasil (Mato Grosso e Pará).

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