Pantomorus ruizi (Brèthes)
 
Geographic distribution
Distribution
An occasional minor pest
  • Argentina
    • Buenos Aires
    • Catamarca
    • Chubut
    • Córdoba
    • Entre Ríos
    • La Pampa
    • Mendoza
    • Neuquén
    • Río Negro
    • San Juan
    • Santa Cruz
    • Santiago del Estero
Other distribution
CHILE
Bio Bio, Maule, Región Metropolitana

 
  • Mimographus ruizi Brèthes 1925: 204
  • Naupactus subvittulus Emden 1936: 23
  • Pantomorus ruizi : Buchanan 1941: 61
  • Asynonychus variabilis Hustache 1947: 139
  • Asynonychus variabilis var. intermedius Hustache 1947: 140
  • Naupactus ruizi : Kuschel 1955: 279
Pantomorus ruizi was redescribed by Morrone & Lanteri (1991) and is probably close to Pantomorus auripes (Scataglini et al. 2005). It has been classified either as Pantomorus or as Naupactus and differentiates from Pantomorus auripes because is usually larger; the vestiture is grey with longer erect setae on the elytra; 1ª and 2ª funicular articles are subequal in length; the pronotum is rugose, with curved flanks; and the elytra are more convex.

Pantomorus ruizi is probably is probably parthenogenetic (Lanteri 1995b, Lanteri & Normark 1995). The first instar larvae was described by Marvaldi & Loiácono (1994). A niche modeling analysis suggests that western coast of USA, South Africa and southeastern Australia are suitable environments for its establishment (Lanteri et al. 2013b).

Eupatorium buniifolium Hook. & Arn. (= chilca negra) and Baccharis sp (Asteraceae), Larrea nitida Cav. (= jarilla) (Zygophyllaceae), Stipa sp (Poaceae) and Schinus areira L. (= aguaribay) (Anarcadiaceae), all of them typical of the arid regions of South America (Morrone & Lanteri 1991, Lanteri et al. 2002a).

Among the cultivated plants there are Solanum tuberosum L. and Medicago sativa L. (Solanaceae) in Argentina and Chile; Pyrus communis L., Prunus avium L. (Rosaceae) and Ribes rubrum L. (Grossulariaceae) in Argentina; and Vitis vinifera L. (=vid) (Vitaceae) in Chile (Elgueta 1993, Lanteri et al. 2002a). It also feeds on Lolium sp, Euro-Asiatic grass broadly extended in the Pampean biogeographic province. In recent years it was found eating needles of Pinus ponderosa Dougl. ex Laws (Pinaceae) in Patagonia, Chubut (Gómez & Lanteri 2006).

It is mainly associated with native vegetation of the Pampean, Espinal and Monte biogeographic provinces and also occurs in Patagonia, being the only Naupactini broadly distributed in that area.
  • BRÈTHES J. 1925. Coléoptères et diptères chiliens. Revista Chilena de Historia Natural 29:198-208, illus.
  • EMDEN F. 1936. In: DALLA TORRE K.W. von, EMDEN M. van, EMDEN F. van. 1936. Coleopterorum Catalogus. Junk, ´s-Gravenhage. Pars 147, Curculionidae: Brachyderinae I, vol. 27, pp. 1-132.
  • HUSTACHE A. 1947. Naupactini de l’Argentine et des régions limitrophes (Col. Curculion.). Revista de la Sociedad Entomológica Argentina 13(1-5): 3-146.
  • KUSCHEL G. 1955. Nuevas sinonimias y anotaciones sobre Curculionoidea (Coleoptera). Revista Chilena de Entomología, Santiago de Chile 4:261-312.
  • MORRONE J.J. & LANTERI A.A. 1991. Ubicación sistemática y variación intraespecífica de Pantomorus ruizi (Brèthes) (Coleoptera: Curculionidae). Revista de la Sociedad Entomológica Argentina 49(1 4): 17-26.
  • 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. & LOIÁCONO M.S. 1994. First instar larvae in the tribe Naupactini (Coleoptera, Curculionidae). Revista Brasileira de Entomologia 38(2): 453-466.
  • LANTERI A.A. & NORMARK B.B. 1995. Parthenogenesis in the tribe Naupactini (Coleoptera: Curculionidae). Annals of the Entomological Society of America 88(6): 722-731.
  • LANTERI A.A. 1995b. Análisis cladístico y evolución de la partenogénesis en el grupo de Pantomorus auripes (Coleoptera: Curculionidae). Revista de la Sociedad Entomológica Argentina 54(1-4): 17-24.
  • 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.
  • SCATAGLINI M.A. ET AL. 2005. Phylogeny of the Pantomorus-Naupactus Complex based on morphological and molecular data (Coleoptera: Curculionidae). Cladistics 21: 131-142.
  • GÓMEZ C.A. & LANTERI A.A. 2006. Primer registro de Naupactus ruizi Coleoptera: Curculionoidea) asociado con Pinus ponderosa (Gymnospermae: Pinaceae) en Patagonia. Revista de la Sociedad Entomológica Argentina 65(1-2):107-109.
  • 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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