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      Strepsicrates smithiana (Walsingham, 1891), enrollador de hojas de Psidium guajava. Identificación, daño y ciclo biológico Translated title: Strepsicrates smithiana (Walsingham, 1891), Psidium guajava Leaf-roller: Identification, Damage and Life Cycle

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          Abstract

          El enrollador de hojas de la guayaba es considerado un limitante fitosanitario de importancia económica en cultivos comerciales de guayaba pera ICA-1 en el norte del Valle del Cauca, Colombia. Es una especie-plaga con poca información taxonómica y biología desconocida, por tanto, se propuso proveer información sobre su biología y datos morfológicos. A partir de larvas colectadas en campo, se conformó el pie de cría en casa de malla (28,75 ± 2,53 °C y 57,28 ± 8,16 HR). Se enviaron muestras de especímenes al Museo Nacional de Historia Natural (Washington, EE. UU.), para su identificación. Mediante observaciones directas y mediciones del ancho de la cápsula cefálica, se determinaron los estadios larvales. La polilla fue identificada como Strepsicrates smithiana, especie no registrada para Colombia. El estado larval presentó cinco estadios y la duración total del ciclo biológico fue de 42,93 ± 1,68 días, con un periodo de incubación de 5,07 ± 0,37. La fase de larva, prepupa, pupa y adulto tuvieron una duración promedio de 18,17 ± 2,03; 3,27 ± 0,45; 10,57 ± 1,04 y 5,87 ± 1,2 días, respectivamente. Los huevos son colocados de forma individual sobre brotes jóvenes de guayaba. Al alimentarse, las larvas ocasionan reducción del área foliar, amarillamiento y muerte de brotes terminales. En la etapa inicial, el daño se caracteriza por raspaduras en hojas y perforación en brotes terminales, seguido de un enrollamiento de hojas ocasionado por larvas más desarrolladas. Información sobre la identidad taxonómica de la especie, su ciclo de vida y caracterización del daño son la base del conocimiento que permitirá el desarrollo de programas de manejo de la plaga que permitan reducir las poblaciones de S. smithiana.

          Translated abstract

          The guava leaf roller is considered a limiting pest for plants of economic importance in commercial crops of Pear Guava cv. ICA-1 in the North of Valle del Cauca department, Colombia. It is a pest species with very few taxonomic information and poorly known biology; thus the aim of this paper was to provide additional information on the biology and morphology of the species. The breeding stock was obtained from larvae collected in the field and reared in a screen house (28.75 ± 2.53 °C and 57.28 ± 8.16 HR). Specimens were sent to the National Museum of Natural History (Washington, USA), for identification. The larval stages were determined through direct observations and measurements of the width of the cephalic capsule the moth was identified as Strepsicrates smithiana, a species hitherto not recorded for Colombia. The larval stage presented five phases and the total duration of the biological cycle was 42.93 ± 1.68 days, with an incubation period of 5.07 ± 0.37. The larval stages, prepupa, pupa and adult had an average duration of 18.17 ± 2.03; 3.27 ± 0.45; 10.57 ± 1.04 and 5.87 ± 1.2 days, respectively. The eggs were placed individually on young guava shoots. The larvae causes a reduction of the leaf area while feeding, often causing the yellowing of the affected leaves and death of terminal buds. In the initial stage, the damage is characterized by gnawing of the leaves, drilling of terminal buds, followed by curling of leaves caused by more developed larvae. Information about the life cycle, taxonomic identity of the species, and the characterization of the damage are the base of knowledge that will enable the development of pest management programs for reducing populations of S. smithiana.

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          Most cited references22

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          The number of molts of lepidopterous larvae

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            Instructivo técnico para el cultivo de la guayaba

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              Occurrence of insect pests on guava (Psidium guajava) tree

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                ccta
                Corpoica Ciencia y Tecnología Agropecuaria
                Corpoica cienc. tecnol. agropecu.
                Corporación Colombiana de Investigación Agropecuaria - Corpoica
                0122-8706
                July 2015
                : 16
                : 2
                : 279-292
                Affiliations
                [1 ] Corpoica Colombia
                [2 ] Corpoica Colombia
                Article
                S0122-87062015000200010
                5bfcda5d-a656-4a42-b4f9-8e969148ac4a

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Colombia

                Self URI (journal page): http://www.scielo.org.co/scielo.php?script=sci_serial&pid=0122-8706&lng=en
                Categories
                AGRICULTURE, MULTIDISCIPLINARY

                General agriculture
                Psidium guajava,Guavas,Strepsicrates smithiana,Identification,Phytosanitary measures,Life cycle,Pests of plants,guayaba,identificación,medidas fitosanitarias,ciclo vital,plagas de plantas

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