Naupactus xanthographus (Germar)
Geographic distribution
Major pest of many crops
  • Argentina
    • Buenos Aires
    • Catamarca
    • Chaco
    • Córdoba
    • Corrientes
    • Entre Ríos
    • La Pampa
    • La Rioja
    • Mendoza
    • Misiones
    • Neuquén
    • San Juan
    • San Luis
    • Santa Fe
    • Santiago del Estero
    • Tucumán
  • Uruguay
Other distribution
Rio Grande do Sul, Santa Catarina

Itapúa, Paraguarí

Artigas, Colonia, Montevideo, Soriano, Treinta y Tres

Atacama, Región Metropolitana, Valparaíso

  • Leptocerus xanthographus Germar 1824: 424
  • Naupactus xanthographus: Schoenherr 1833: 571
Naupactus xanthographus was revised by Lanteri & del Río (2017), along with the species of the same group of Naupactus. It is similar to N. dissimilis Hustache and mainly differentiates because in the females the elytra are strongly widened relative to the pronotum and abruptly narrowed towards the apex, which tubercles are larger and more separated from each other. The stripes along pronotum and elytra are usually yellow instead of white, except the elytral suture, which is always white, and never extends along midline of the pronotum, such as in N. dissimulator.

This species shows a remarkable sexual dimorphism. Males are narrower and usually smaller than females and bear a line of denticles on the inner margin of all tibiae; the distal denticle of the hind tibiae is very large, with the appearance of a mucron proximally displaced (in females the hind tibiae lack denticles).

First instar and mature larvae have been described by Marvaldi & Loiácono (1994) and Marvaldi (1998). The biology was studied in Chile, country in which was probably introduced, by Caballero (1968), González et al. (1992) and other authors. A phylogeographic study with notes on its potential distribution was published by Guzmán et al. (2012).
Frequently associated with Vitis vinifera L. (Vitaceae), other fruit trees (e.g. Prunus persica var. nectarine) and garden plants in Argentina (Mendoza) and Chile (González et al. 1992, Artigas 1994, Lanteri et al. 2002a). In Argentina it is part of the alfalfa weevil complex (Lanteri 1994), and was found damaging cherries and berries, Prunus avium L. (Rosaceae) and Ribes sp (Grossulariaceae) in Chubut (del Río et al. 2010) and soybean Glycine max (L.) Merr. and Erythrina crista-galli L. (Fabaceae) in Córdoba.

It is widespread in Chacoan, Pampean, Espinal and Monte biogeographic provinces.
  • GERMAR E.F. 1824. Insectorum species novae aut minus cognitae, descriptionibus illustratae. Hendel and Sons, Halae. Vol. 1, Coleoptera, XXIV + 624 pp., illus. [Curc. pp. 185-461, pls. I-II].
  • SCHOENHERR C.J. 1833. Genera et species curculionidum, cum synonymia hujus familiae. Roret, Paris, vol. 1, pt. 1, pp. I-XV, 1-381; pt. 2, pp. 383-681.
  • CABALLERO V.C. 1968. Control y biología del burrito del durazno: Naupactus xanthographus (Coleoptera: Curculionidae). Simiente (Chile) 38(5-6): 23-25.
  • GONZÁLEZ R.H. ET AL. 1992. Insectos y ácaros asociados al cultivo de la frambuesa en Chile. Revista Frutícola (Chile) 13(2): 41-51.
  • ARTIGAS J. 1994. Entomología Económica. Insectos de interés agrícola, forestal, médico y veterinario. Edición Universidad de Concepción, Chile, vol. 2, 943 pp.
  • LANTERI A.A. 1994. Bases para el control integrado de los gorgojos de la alfalfa. De la Campana Ediciones, La Plata, 119 pp.
  • MARVALDI A.E. & LOIÁCONO M.S. 1994. First instar larvae in the tribe Naupactini (Coleoptera, Curculionidae). Revista Brasileira de Entomologia 38(2): 453-466.
  • MARVALDI A.E. 1998. Larvae of South American Entimini (Coleoptera: Curculionidae) and phylogenetic implications of certain characters. Revista Chilena de Entomología 25: 21-44.
  • 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.
  • DEL RÍO M.G. ET AL. 2010. Gorgojos (Coleoptera: Curculionidae) perjudiciales para “frutos rojos” en la Argentina. Revista de la Sociedad Entomológica Argentina 69(1-2): 101-110.
  • GUZMÁN N.V. ET AL. 2012. Colonization ability of two invasive weevils with different reproductive modes. Evolutionary Ecology 26 (6): 1371-1390. DOI 10.1007/s10682-012-9564-4.
  • LANTERI A.A. & DEL RÍO M.G. 2017. Naupactus xanthographus (Germar) species group (Curculionidae: Entiminae: Naupactini): a comprehensive taxonomic treatment. Journal of Natural History 51(27-28): 1557-1587
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