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Chrysodeixis includens (Walker) is a characteristic Plusiinae (Lepidoptera: Noctuidae) species from the Western Hemisphere. The larva have already been found feeding on several different plant families, including economic value crops such as soybeans. This species coexists and can be confused with Rachiplusia nu (Guenée) (Lepidoptera: Noctuidae) in soybean crops. Furthermore, some studies indicate that C. includens shows tolerance to various insecticides, leading to differentiation among these two species to be most important in relation to control procedures to be undertaken. To contribute to the correct identification of C. includens we made detailed redescriptions of all preimaginal stages (egg, larva, and pupa). Immature stages of C. includens were reared in laboratory under controlled conditions of 27±2 °C, 70–75% relative humidity, and 14:10 (light/dark) photoperiod. We consider opportune detection of preimaginal stages of Chrysodeixis includens will help to control this pest species, especially at admissible economical levels.

Agrotis robusta (Blanchard, 1852) (Lepidoptera: Noctuidae) is a species of economic importance in South America. This species is considered a pest on seedlings of several crops. Agrotis robusta is commonly confused with and treated as A. malefida Guenée in Boisduval and Guenée, 1852, and only a couple of works cite A. robusta for South America and none mention it as a species of economic importance. The aim of this work is to redescribe and illustrate the adult and male and female genitalia of A. robusta, and to provide an identification key to closely related pest species in South America with which A. robusta has been confused. Four new synonymies with A.

<p class="western" style="text-indent: 0.5cm; margin-bottom: 0cm; line-height: 150%;" lang="en-US" align="justify"><span style="color: #000000;"><span lang="es-AR">En Argentina son escasos los estudios referidos a Lepidoptera dañinos sobre quinoa (</span></span><span style="color: #000000;"><span lang="es-AR"><em>Chenopodium quinoa</em></span></span><span style="color: #000000;"><span lang="es-AR">)</span></span><span style="color: #000000;"><span lang="es-AR"><em>.</em></span></span><span style="color: #000000;"><span lang="es-AR"> El objetivo </span></span><span lang="es-AR">de este trabajo</span><span style="color: #000000;"><span lang="es-AR"> fue identificar especies de ese orden asociadas a la quinoa en zonas de altura de Jujuy. Para ello, se recolectaron orugas de panojas procedentes de </span></span><span lang="es-AR">Chalguamayoc</span><span style="color: #000000;"><span lang="es-AR"> (Yavi, Jujuy), en febrero y noviembre de 2011. Estas orugas fueron mantenidas en jaulas de cría y alimentadas con panojas del cultivo hasta la emergencia de los adultos. Además, se revisaron ejemplares de Lepidoptera asociados a quinoa en Jujuy, depositados en la colección entomológica del Instituto de Biología de la Altura (INBIAL). La identificación se realizó mediante preparaciones microscópicas de las genitalias de machos y hembras y del patrón de coloración alar. Se identificaron tres especies: </span></span><span style="color: #000000;"><span lang="es-AR"><em>Eurysacca melanocampta</em></span></span><span style="color: #000000;"><span lang="es-AR"> (Gelechiidae, </span></span><span style="color: #000000;"><span lang="es-AR">Gnorimoschemini</span></span><span style="color: #000000;"><span lang="es-AR">), </span></span><span style="color: #000000;"><span lang="es-AR"><em>Copitarsia incommoda </em></span></span><span style="color: #000000;"><span lang="es-AR">y </span></span><span style="color: #000000;"><span lang="es-AR"><em>Copitarsia corruda</em></span></span><span style="color: #000000;"><span lang="es-AR"> (Noctuidae, </span></span><span style="color: #000000;"><span lang="es-AR">Cuculliinae</span></span><span style="color: #000000;"><span lang="es-AR">). Estos aportes representan la primera cita de </span></span><span style="color: #000000;"><span lang="es-AR"><em>E. melanocampta</em></span></span><span style="color: #000000;"><span lang="es-AR"> y </span></span><span style="color: #000000;"><span lang="es-AR"><em>C. corruda</em></span></span><span style="color: #000000;"><span lang="es-AR"> para la Argentina, la ampliación de </span></span><span style="color: #000000;"><span lang="es-AR">la distribución </span></span><span lang="es-AR">de</span><span lang="es-AR"><em> C. incommoda </em></span><span lang="es-AR">en el país y el primer registro de</span><span lang="es-AR"><em> C. incommoda</em></span><span lang="es-AR"> y </span><span lang="es-AR"><em>C. corruda</em></span><span lang="es-AR"> sobre </span><span lang="es-AR"><em>Chenopodium quinoa</em></span><span lang="es-AR"> como nueva planta hospedadora.</span></p>