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A NEW GENUS AND SPECIES OF ASTERACEAE-INHABITING APHID (HEMIPTERA: APHIDIDAE) FROM COSTA RICA AND MEXICO

M. Pilar Mier Durante, Nicolás Pérez Hidalgo, David Martínez-Torres, Sergio García-Tejero, Rebeca Peña Martínez and Juan M. Nieto Nafría
The Florida Entomologist
Vol. 96, No. 2 (June, 2013), pp. 323-331
Stable URL: http://www.jstor.org/stable/23609315
Page Count: 9
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A NEW GENUS AND SPECIES OF ASTERACEAE-INHABITING APHID (HEMIPTERA: APHIDIDAE) FROM COSTA RICA AND MEXICO
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Abstract

Ucrimyzus villalobosi Mier Durante & Pérez Hidalgo gen. n., sp. n. (Hemiptera: Aphididae: Macrosiphini) are described from apterous and alate viviparous females collected on species of genera Bidens, Schkuhria, Senecio and Stevia (Asteraceae: Asteroideae) in Costa Rica and Mexico. Principal components analysis (PCA) was done to verify that the studied aphids belong to a single species regardless of their geographical origin or host plant. Molecular analyses were carried out on the sequences of a fragment of the mitochondrial gene encoding for cytochrome c oxidase subunit 1 (COI) and of a fragment of the nuclear gene encoding elongation factor 1α (EF1α). The taxonomic discussion takes into account the conclusions of the molecular analyses and the morphologic study compared with other genera of Macrosiphini. The identification keys by Blackman & Eastop (2006) to aphids living on each mentioned plant genus are modified to include the new species. Se describe Ucrimyzus villalobosi Mier Durante & Pérez Hidalgo gen. n., sp. n. (Hemiptera: Aphididae: Macrosiphini) a partir de hembras vivíparas ápteras y aladas recogidas en Costa Rica y México sobre plantas de los géneros Bidens, Schkuhria, Senecio y Stevia (Asteraceae: Asteroideae). El análisis de componentes principales de los especímenes asegura que son de la misma especie cualquiera que sea su origen geográfico o su planta hospedadora. Se han analizado sendos fragmentos del gen mitocondrial que codifica la subunidad 1 de la citocromo c oxidasa (COI) y del gen nuclear que codifica el factor de elongación 1 α (EF1α). La discusión taxonómica se ha basado en las conclusiones de los análisis moleculares y en el estudio morfológico comparado con géneros de Macrosiphini. Se modifican las claves de identificación de Blackman & Eastop para los pulgones que viven en los mencionados 4 géneros de plantas para incluir en ellas el nuevo género Ucrimyzus.

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