Report of Homoeocerus variabilis (Hemiptera: Coreidae) on Khejri (Prosopis cineraria) in Rajasthan, India: Incidence and Morphometric Analysis
Abstract
An infestation of Homoeocerus variabilis Dallas (Hemiptera: Coreidae) on khejri, Prosopis cineraria, was first noticed in 2010 at the Experimental Farm of Central Institute for Arid Horticulture and other fields of Bikaner district, Rajasthan, India. The maximum incidence was observed in December (66.7%) and minimum in June (16.7%). The number of this bug ranged between 27.3 and 222.9 adults per plant. This species is characterized by an ochraceous body with a broad red basal fascia on the pronotum between the humeral angles, small pale scutellum, antennae 4-segmented, the basal part of second and third segment is pale yellow, third segment flattened at the tip and fourth segment is the shortest. The mean body lengths of the male and female adult vary and were recorded as 12.2 mm and 15.5 mm, respectively.Resumen: Se observó por primera vez en 2010 una infestación de Homoeocerus variabilis Dallas (Hemiptera: Coreidae) en khejri, Prosopis cineraria, en la Granja Experimental del Instituto Central de Horticultura Árido y otros campos del Distrito Bikaner, Rajastán, India. Se observó la incidencia máxima (% de árboles infestados) en diciembre (66.7%) y el mínimo en junio (16.7%). La densidad de la población de este chinche coreido varió entre 27.3 y 222.9 adultos por planta. El chinche coreido se caracteriza por tener el cuerpo del color café con una fascia ancha basal en el pronoto entre los ángulos laterales, el escutelo pálido y pequeño, las antenas de 4 segmentos con la parte basal del segundo y tercer segmento de color amarillo, el el apice del tercer segmento aplanado y el segmento 4 es el más corto. El promedio de la longitud del cuerpo de los machos y hembras varía y fue registrado a 12.2 mm y 15.5 mm, respectivamente.
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