Naupactus verecundus Hustache
Geographic distribution
An occasional minor pest
  • Argentina
    • Buenos Aires
    • Catamarca
    • Chubut
    • Córdoba
    • Corrientes
    • La Pampa
    • La Rioja
    • Mendoza
    • Neuquén
    • Río Negro
    • San Luis
    • Santiago del Estero
    • Tucumán
Other distribution
Introduced in Chile.

  • Naupactus verecundus Hustache 1947: 105
  • Naupactus verecundus var calamuchitanus Hustache 1947: 106
  • Naupactus vianai Hustache 1947: 106
Naupactus verecundus is similar to N. tremolerasis in size and general body shape but easily differentiates because the scaly vestiture is usually purple-violet or green, with suture, 4º interval and the two marginal intervals of the elytra denuded of scales; elytral setae are fine, very long and erect. Pronotum and elytra are slightly narrower and longer than in N. tremolerasis. The scutellum is whitish and the corbels of the hind tibiae are absent as in the latter species.

Males are infrequent in most populations, except in Córdoba province. Females are infected with the bacterium Wolbachia, that induces parthenogenesis in several species of Naupactini (Rodriguero et al. 2010a).
Eggs and oviposition habits have been described by Marvaldi (1999), and first instar larva, by Marvaldi (1998).
Associated with xerophytic shrubs typical of the Espinal and Monte biogeographic provinces, such as Baccharis salicifolia (Ruiz et Pavón) Pers., Baccharis spartioides (Hook. et Arn.) Remy. (Asteraceae), Portieria sp (Zygophyllaceae) and Oenothera stricta Ledeb ex Link (Onagraceae).
It causes damages on Vitis vinifera L. (Vitaceae), other fruit plants and ornamental garden shrubs in Argentina (mainly in Mendoza province) and central Chile (Elgueta 1993, Lanteri et al. 2002a). It was recently found damaging Glycine max (L.) Merr. (Fabaceae) in Córdoba province.
Silva et al. (1968) cited N. verecundus for southern Brazil, damaging grapes, but we cannot confirm its presence in that country.
  • HUSTACHE A. 1947. Naupactini de l’Argentine et des régions limitrophes (Col. Curculion.). Revista de la Sociedad Entomológica Argentina 13(1-5): 3-146.
  • SILVA A.G. ET AL. 1968. Quarto Catálogo dos insetos que vivem nas plantas do Brasil, seus parasitos e predadores. Ministerio da Agricultura, Departamento de Defesa e Inspecão Agropecuaria, Serviço de Defesa Sanitaria Vegetal, Laboratorio Central de Patología Vegetal. Río de Janeiro, GB, Brasil, 622 pp.
  • ELGUETA M. 1993. Las especies de Curculionoidea (Insecta: Coleoptera) de interés agrícola en Chile. Publicación Ocasional nro. 48, Museo Nacional de Historia Natural, Santiago, Chile, 72 pp.
  • MARVALDI A.E. 1998. Larvae of South American Entimini (Coleoptera: Curculionidae) and phylogenetic implications of certain characters. Revista Chilena de Entomología 25: 21-44.
  • MARVALDI A.E. 1999. Eggs and oviposition habits in Entimini (Coleoptera: Curculionidae). The Coleopterists Bulletin 53(2): 115-126.
  • LANTERI A.A. ET AL. 2002a. Gorgojos de la Argentina y sus plantas huéspedes. Tomo I: Apionidae y Curculionidae. Publicación Especial de la Sociedad Entomológica Argentina Nº 1, 98 pp.
  • RODRIGUERO M.S. ET AL. 2010a. Wolbachia infection in the tribe Naupactini: association between thelytokous parthenogenesis and infection status. Insect Molecular Biology 19(5): 599-705.
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