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FIRST OCCURRENCE OF THE APHID PARASITOID, APHELINUS BASILICUS (HYMENOPTERA: APHELINIDAE), ON APHIS GOSSYPII (HEMIPTERA: APHIDIDAE) COLOR FORMS IN INDIA

D. Lokeshwari, M. Hayat, N. K. Krishna Kumar, H. Manjunatha and R. Venugopalan
The Florida Entomologist
Vol. 97, No. 2 (March, 2014), pp. 809-813
Stable URL: http://www.jstor.org/stable/24362577
Page Count: 5
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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.
FIRST OCCURRENCE OF THE APHID PARASITOID, APHELINUS BASILICUS (HYMENOPTERA: APHELINIDAE), ON APHIS GOSSYPII (HEMIPTERA: APHIDIDAE) COLOR FORMS IN INDIA
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Abstract

An aphid parasitoid, Aphelinus basilicus Fatima & Hayat (Aphelinidae: Aphelininae) is described from material collected in Bengaluru, Karnataka for the first time. It was found to parasitize apterous viviparous females of the cotton aphid, Aphis gossypii (Glover) infesting Gossypium hirsutum (Malvaceae), during Jul, 2013. Field data indicated that the parasitoid, Aphelinus basilicus parasitized dark green forms (88%) of A. gossypii more frequently than pale green (24%) and yellow forms (2%) suggesting that the body color strongly influenced the host preference for foraging. The 3 color forms were differentially susceptible to selection by the parasitoid. Statistical analysis revealed that the parasitoid had an inherent preference for dark green forms (P < 0.05). Information on the parasitoid's distribution, diagnostic characters, host range and host preference are presented to ease the identification as well as to understand the fundamentals of host selection behavior of this species. This is a new distributional record of Aphelinus basilicus parasitizing color forms of A. gossypii associated with G. hirsutum in Karnataka, India. Se describe el parasitoide de áfidos, Aphelinus basilicus Fátima y Hayat (Aphelinidae: Aphelininae) de material recolectado por primera vez en Bangalore, Karnataka. Se encontró que las hembras parasitan la forma áptera vivípara de los áfidos del algodón, Aphis gossypii (Glover) infestando Gossypium hirsutum (Malvaceae) cultivado en la parcela experimental mantenida en el Instituto de Investigaciones Hortícolas de India, Bengaluru, durante julio del 2013. Los datos de campo indican que el parasitoide, Aphelinus basilicus parasitó a las formas de color verde oscuro (88%) de A. gossypii con más frecuencia que el verde pálido (24 %) y las formas de color amarillo (2%) que indica que el color influyó fuertemente la preferencia de hospedero en la búsqueda de alimento. Las 3 formas de color fueron diferencialmente susceptibles a la selección por parte del parasitoide. El análisis estadístico reveló que el parasitoide tenía una preferencia inherente a las formas de color verde oscuro (P < 0.05). Se presenta información sobre la distribución del parasitoide, caracteres diagnósticos, rango de huéspedes y la preferencia de hospedero para facilitar la identificación, así como para comprender los fundamentos del comportamiento de selección del hospedero de esta especie. Este es un nuevo registro de distribución de Aphelinus basilicus que parasita diferentes tonos de color de A. gossypii asociado con G. hirsutum en Karnataka.

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