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Revista de la Sociedad Entomológica Argentina

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BARRIONUEVO, María José. Redescription of the immature stages of Rachiplusia nu (Lepidoptera: Noctuidae). Rev. Soc. Entomol. Argent. [online]. 2011, vol.70, n.3-4, pp. 169-184. ISSN 0373-5680.

The immature stages of Rachiplusia nu (Guenée) are redescribed and illustrated, according to current standards of descriptive patterns. The immature stages of R. nu were obtained from laboratory cultures under controlled conditions of temperature at 27 ± 2ºC, 14:10 (light/darkness) artificial photoperiod and 70-75% of relative humidity. For the first time, the larval instars previous to the larvae mature are described. All immature stages were compared with those of Pseudoplusia includens (Walker), with which they can often be confused in the field. The estimation of the larval age allowed to determine that the highest rate of growth takes place in the fourth larval instar and then decreases gradually to mature larva.

Keywords : Egg; Larva; Pupa; Morphology; Rachiplusia nu.

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