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Symposium: Insect Behavioral Ecology--'80: Marking Techniques for Recognizing Individual Insects

Florida Entomologist
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  • Biology


Scientific Notes 277 Behavior of first instar nymphs of EdESSa mEditabuNda (f.) (hemiptera: pentatomidae) on the egg mass Giulianne S. Calizotti1 and antônio R. Panizzi2* 1Ciências Biológicas, Centro Universitário filadélfia (Unifil), avenida Juscelino Kubitschek, 1626, 86020-000 , Londrina, pr, Brasil 2embrapa trigo, Caixa postal 451, 99001-970, passo fundo, rs, Brasil. Corresponding author; e-mail: [email protected] supplementary material for this article in florida entomologist 97(1) (2014) is online at . the brown-winged stink bug, Edessa med- itabunda (f.) (heteroptera: pentatomidae) is a neotropical pentatomid associated mostly with several species of cultivated and non-cultivated fabaceae, solanaceae, and asteraceae (silva et al. 1968; rizzo 1971; Lopes et al. 1974; Krinski et al. 2012). it has been reported as a pest of sev- eral crops such as soybean, sunflower, and potato (rizzo 1971; galileo & heinrichs 1979; panizzi & machado-neto 1992). description of the egg mass, nymphs, and adult (rizzo 1971), effect of temperature on development and reproduction (gonçalves et al. 2008), and feeding behavior and damage caused to soybean (galileo & heinrichs 1979, panizzi & machado-neto 1992, silva et al. 2012) have been investigated. as nymphs of E. meditabunda emerge, they stay on the top of the egg shells (chorions), as most pentatomid nymphs do, and later move off the eggs, but remain nearby, facing the empty eggs (sánchez et al. 1999). the early association of the first instar nymphs with the empty eggs is believed to help in possible symbiont acquisition (e.g., abe et al. 1995). female stink bugs pass bac- teria to their progeny by smearing cells on the egg mass during oviposition (Buchner 1965). to our knowledge, the behavior of sitting on the top of the eggs and positioning themselves adjacent to the eggs has not been investigated in detail. therefore, the objective of this study was t

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