Naupactus minor (Buchanan)
Geographic distribution
An occasional minor pest
  • Argentina
    • Buenos Aires
    • Entre Ríos
    • Santa Fe
  • Uruguay
Other distribution
Rio Grande do Sul

Canelones, Montevideo, Paysandú, Rivera

Introduced in USA (Florida and Alabama).
  • Pantomorus minor Buchanan 1942: 107
  • Graphognathus minor : Buchanan 1947: 21
  • Naupactus breviscapus Hustache 1947: 102
  • Naupactus minor : Lanteri & Marvaldi 1995: 221
Naupactus minor belongs to N. leucoloma species group, revised by Lanteri & Marvaldi (1995). It mainly differentiates from this species because is smaller, setae on pronotum and elytra are shorter and corbels plates of the hind tibiae are present, although narrow. It distinguishes from N. peregrinus because the eyes are more flat and the setae on the pronotum are anteriorly directed instead of posteriorly directed.

Naupactus minor is parthenogenetic and is infected with the bacterium Wolbachia, which induces parthenogenesis in several species of Naupactini (Rodriguero et al. 2010a). Its potential geographical distribution was assessed by niche modeling (Lanteri et al. 2013b).
It is harmful for alfalfa (Medicago sativa L.), Lotus spp and soybean (Glycine max L. (Merr.)) in Argentina, Brazil and Uruguay (Lanteri 1994, Alzugaray et al. 1998, Lanteri et al. 2002a, 2013a b).

Naupactus minor inhabits in grasslands of the Pampean biogeographic province.
  • BUCHANAN L.L. 1942. Four new species of white-fringed beetles (subgenus Graphognathus) from the southeastern part of the United States (Coleoptera: Curculionidae). Bulletin of the Brooklyn Entomological Society 37(3): 107-110.
  • BUCHANAN L.L. 1947. A correction and two new races in Graphognatus (white-fringed beetles) (Coleoptera: Curculionidae). Journal of the Washington Academy of Sciences 37(1): 19-22, illus.
  • HUSTACHE A. 1947. Naupactini de l’Argentine et des régions limitrophes (Col. Curculion.). Revista de la Sociedad Entomológica Argentina 13(1-5): 3-146.
  • LANTERI A.A. 1994. Bases para el control integrado de los gorgojos de la alfalfa. De la Campana Ediciones, La Plata, 119 pp.
  • LANTERI A.A. & MARVALDI A.E. 1995. Graphognathus Buchanan, a new synonym of Naupactus Dejean, and systematics of the N. leucoloma species group (Coleoptera: Curculionidae). The Coleopterists Bulletin 49(3): 206-228.
  • ALZUGARAY R. ET AL. 1998. Situación de los insectos del suelo en Uruguay. In: Morón, M.A., Aragón A. (eds.). Avances en el estudio de la diversidad, importancia y manejo de los Coleópteros edafícolas americanos. Publicación Especial, Universidad Nacional Autónoma de Puebla, Sociedad Mexicana de Entomología, pp. 151-164.
  • 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.
  • LANTERI A.A. ET AL. 2013a. On the presence of six species of Naupactini damaging soybean in Brazil. Neotropical Entomology 42: 325-327.
  • LANTERI A.A. ET AL. 2013b. Potential geographic distributions and successful invasions of parthenogenetic broad-nosed weevils (Coleoptera: Curculionidae) native to South America. Environmental Entomology 42(4): 677-686.
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