Oviposition behavior of Neomegalotomus parvus (West.) (Hemiptera: Alydidae): daily rhythm and site choice

  • Ventura M
  • Panizzi A
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Abstract

Neomegalotomus parvus (West.) behavior related to choosing crevices of pigeon pea, Cajanus cajan (L.) Millsp., pods to lay eggs were studied. Blocking antennae, tarsi, eyes, abdomen, or all structures simultaneously, did not affect the site of the pod (crevices) chosen to lay eggs. Oviposition occurred mainly in the afternoon. Most eggs were laid from 4 to 6 pm. Females moved antennae alternately up and down. Dabbing/antennation was accomplished, first with antennae and then with antennae and labial tip and the ovipositor was exposed and swept over the surface of the pod, leading to oviposition. Eggs were held together with an adhesive substance. Mechanoreceptors were observed on the ovipositor.Foi o estudado o comportamento de Neomegalotomus parvus (West.) relacionado à escolha de fendas em vagens de guandu, Cajanus cajan (L.) Millsp., para deposição de ovos. O bloqueamento de antenas, tarsos, olhos, abdome ou todas as estruturas simultaneamente não afetou a escolha do local em vagem de guandu (fendas). A oviposição ocorreu principalmente no período da tarde. A maior quantidade de ovos foi depositada das 16 às 18 h. As fêmeas moveram as antenas alternadamente para baixo e para cima; o tateamento/antenação foi realizado, primeiramente com antena e depois com a extremidade do labium e o ovipositor foi evertido e esfregado na superfície da vagem determinando a oviposição. Os ovos foram depositados com uma substância adesiva. Mecanoreceptores foram observados no ovipositor.

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APA

Ventura, M. U., & Panizzi, A. R. (2000). Oviposition behavior of Neomegalotomus parvus (West.) (Hemiptera: Alydidae): daily rhythm and site choice. Anais Da Sociedade Entomológica Do Brasil, 29(3), 391–400. https://doi.org/10.1590/s0301-80592000000300002

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