Scirtothrips species (Thysanoptera: Thripidae) described from Mangifera indica (Anacardiaceae) in Mexico
Keywords:
new synonyms, Scirtothrips citri, quarantineAbstract
A series of 15 species described from specimens collected from the leaves of mango trees at a single site in Mexico are newly placed as synonyms of the California citrus thrips, Scirtothrips citri (Moulton) (Thysanoptera: Thripidae). These species were originally discriminated based on differences in the precise placement of setae in the median area of the pronotum, and this chaetotaxy is here recognized as variable within populations of this thrips from various sites in California and Mexico. Preliminary results from molecular analysis of 2 genes, CO1 and 28S-D2, indicate that there is variation at the molecular level between populations of S. citri. However, this variation is not sufficient to support new species designations, and no consistent morphological divergence between these populations was detected.
Resumen
Una serie de 15 especies descritas de especimenes recolectadas sobre hojas de árboles de mango en un solo sitio en México han sido recientemente colocadas como sinónimos deltrips de los cítricos de California, Scirtothrips citri (Moulton) (Thysanoptera: Thripidae). Estas especies fueron descriminadas originalmente basado en las diferencias en la colocación precisa de las setas en la zona media del pronoto y esta quetotaxia está aquí reconocida como variable dentro de las poblaciones de este trips de varios sitios en California y México. Los resultados preliminares de análisis molecular de 2 genes, CO1 y 28S-D2, indican que hay una variación en el nivel molecular entre las poblaciones de S. citri. Sin embargo, esta variación no es suficiente para soportar las nuevas designaciones de especies, y no se detectó ninguna divergencia morfológica consistente entre estas poblaciones.
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