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LIFE CYCLE OF Falconia incaica (Heteroptera: Miridae) ON Ricinus communis (Euphorbiaceae) IN THE BOGOTÁ PLATEAU
Ciclo de vida de Falconia incaica (Heteroptera: Miridae) en Ricinus communis (Euphorbiaceae) en la sabana de Bogotá
DOI:
https://doi.org/10.15446/abc.v30n1.114686Keywords:
Colombia, rearing techniques, Neotropical region, insect pests, host plant (en)Colombia, insectos plaga, plantas hospedantes, región Neotropical, técnicas de cría (es)
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Falconia incaica is a plant bug commonly found on Ricinus communis (Euphorbiaceae), a plant species widely cultivated in the American tropics to extract its seed oil. Heavily infested leaves exhibit feeding damage from these plant bugs, having the leaves whitish-yellow spots on their dorsal surface. The adults and nymphs are mostly located on the underside of the leaf. This work aimed to document the life cycle of F. incaica breeding on R. communis, and to recognize and differentiate its nymphal instars based on their morphology. Under laboratory conditions (18°C, relative humidity 70 %) the life cycle duration, from instar I to adult, was 20.16 (SD=1.05) days, with an increasing development time for later instars. Nymphal instars I and II have reddish lateral areas on the head (including scape, pedicel, and first flagellomere), thorax, and first abdominal segment; instars III-V have these areas dark instead of red. Among the nymphal measurements taken, the length of the antennal pedicel allowed for differentiation of each of the five nymphal instars.
Falconia incaica es un chinche de las plantas, que se encuentra comúnmente en Ricinus communis (Euphorbiaceae), una especie de planta ampliamente cultivada en los trópicos americanos para extraer el aceite de su semilla. Hojas muy infestadas exhiben daños por alimentación debido a estos insectos, teniendo como consecuencia las hojas manchas de color blanco amarillento en su superficie dorsal. Los adultos y las ninfas se encuentran principalmente en el envés de la hoja. El objetivo de este trabajo fue documentar la duración del ciclo de vida de F. incaica al reproducirse sobre R. communis, y reconocer y diferenciar sus estadios ninfales en función de su morfología. En condiciones de laboratorio (18°C, humedad relativa 70 %) la duración del ciclo de vida, desde el estadio I hasta el adulto, fue de 20,16 (DE=1,05) días, con un tiempo de desarrollo creciente en los estadios posteriores. Los estadios ninfales I y II tienen áreas laterales rojizas en la cabeza (incluidos el escapo, el pedicelo y el primer flagelómero), el tórax y el primer segmento abdominal; los estadios III-V tienen estas áreas oscuras en lugar de rojas. Entre las mediciones ninfales tomadas, la longitud del pedicelo antenal permitió la diferenciación de cada uno de los cinco estadios ninfales.
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