El género Xenogenus Berg, 1883 (Heteroptera: Rhopalidae) en Chile.

I.FAÚNDEZ, Eduardo; F.CAMPODÓNICO, Juan; I.FAÚNDEZ, Eduardo; F.CAMPODÓNICO, Juan

doi:doi.org/10.25085/rsea.800112

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Revista de la Sociedad Entomológica Argentina

versión impresa ISSN 0373-5680versión On-line ISSN 1851-7471

Rev. Soc. Entomol. Argent. vol.80 no.1 La Plata mar. 2021

http://dx.doi.org/doi.org/10.25085/rsea.800112

Notas Científicas

The genus Xenogenus Berg, 1883 (Heteroptera: Rhopalidae) in Chile.

El género Xenogenus Berg, 1883 (Heteroptera: Rhopalidae) en Chile.

Eduardo I.FAÚNDEZ¹

Juan F.CAMPODÓNICO²³

^¹Laboratorio de Entomología y Salud Pública, Instituto de la Patagonia, Universidad de Magallanes. Punta Arenas, Chile.

^²Programa de Doctorado en Ciencias mención Ecología y Evolución, Escuela de Graduados, Facultad de Ciencias, Universidad Austral de Chile. Valdivia, Chile. * E-mail: juan.campodonico@ug.uchile.cl

^³Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile. Valdivia, Chile.

ABSTRACT

The distribution of the species of Xenogenus Berg in Chile is addressed. The known distribution of Xenogenus gracilis (Reed), previously restricted to the O’Higgins region (besides Argentina, Bolivia, Brazil and Peru), is expanded up to Tarapacá and Los Ríos regions. Xenogenus picturatum Berg (previously known from Argentina, Bolivia, Cuba, Mexico, Nicaragua, Uruguay and USA including Puerto Rico) is recorded for the first time in Chile, in the Metropolitan and Maule regions.

KEYWORDS: Coreoide; Faunistics; Hemiptera; New records.

RESUMEN

Se aborda la distribución de las especies de Xenogenus Berg en Chile. La distribución conocida de Xenogenus gracilis (Reed), previamente limitada a la región de O’Higgins (además de Argentina, Bolivia, Brasil y Perú), se expande hasta las regiones de Tarapacá y de Los Ríos. Xenogenus pictoratum Berg (previamente conocido en Argentina, Bolivia, Cuba, México, Nicaragua, Uruguay y EE. UU. incluyendo Puerto Rico) se registra por primera vez en el país, en las regiones Metropolitana y del Maule.

PALABRAS CLAVE: Coreoidea; Faunística; Hemiptera; Nuevos registros

Rhopalidae, commonly known as scentless plant bugs is a family of phytophagous heteropterans that currently comprises 236 species classified in 26 genera ). This family was for a long time considered a subfamily of Coreidae until gave it family rank. Several rhopalids are considered to have an economic importance, because they feed on crops; however, with a relatively low impact (^{Schaefer & Kotulski, 2000}). In Chile this family is represented by 15 species classified in six genera (^{Faúndez, 2016};).

Xenogenus Berg is a bispecific genus of scentless plant bugs, widely distributed in the Americas ( ;). In Chile, to date, this genus is represented just by Xenogenus gracilis (^{Reed, 1899}) which was described from Baños de Cauquenes, O’Higgins region. After that, no additional references on this genus have been published in the country (). The purpose of this contribution is to provide new distributional records for X. gracilis in Chile as well as the first records of Xenogenus picturatum Berg in the country.

Photos were taken with a digital camera adapted to a stereoscopic microscope. Maps were developed with QGIS. The collections cited in the text are from Museo Entomológico Luis Peña, Departamento de Sanidad Vegetal, Universidad de Chile MEUC, and Heteroptera Reference Collection of the CEBCh HRCC.

Fig. 1: Xenogenus gracilis: A. habitus. B. male genitalia; X. picturatum: C. habitus.D. male genitalia.

Fig. 2: Records of Xenogenus gracilis(A) and Xenogenus picturatum(B) in Chile. Geodetic atum WGS 84.

Xenogenus gracilis (^{Reed, 1899}) (Figs. 1A, 1B, 2A)

(Harmostes gracilis ^{Reed, 1899})

This species is currently distributed in Argentina, Bolivia, Brazil, Chile and Peru towards the Andes mountains (Gollner-Scheiding, 1980; Diez & Coscarón, 2015; Melo, 2016). In Chile,, it is nBaños de Cauquenes O’Higgins region. Here we provide the first records for Tarapacá, Coquimbo, Metropolitan and Los Ríos regions.

Material examined: Chile: Tarapacá region: Mamiña, 11-2016, J. F. Campodonico leg., 2XX¹ HRCC; Mamiña, 29-IX-1967, R. Charlin leg., 1X MNNC; La Tirana, II-2016 J. F. Campodonico leg., 1£ HRCC; Coquimbo region: Llanos de la Higuera, Ruta 5 Norte, Km 537, 11-X-2015, J. F. Campodonico leg, 1X HRCC; Vicuña, 4-X-1966, R. Charlin leg. 1£ MEUC Metropolitan region: Maipú, Quebrada de la Plata, 33°29'S. 70°53'W. 520m, 4-XI-2015, J. F. Campodonico leg., 2XX 1MEUC,1HRCC; Rinconada de Maipú, 19 11-1963, R. Charlin leg., 1£ MEUC; Rinconada de Maipú, IV-1963, R. Charlin leg., 1£ MEUC; Rinconada de Maipú, 29-I-1956, R. H. González leg., 1£ MEUC; Los Ríos region: Pirihueico Lake, 20-I-2011, R. Perez de Arce leg.,1X HRCC.

Xenogenus picturatum Berg, 1883 (Figs. 1C, 1D, 2B)

(=Xenogenus extensus Distant, 1893)

(=Darmistidius maculatus Uhler, 1893)

This species is the most widely distributed in the genus Xenogenus , recorded from Argentina, Bolivia, agua, Uruguay and USA (including Puerto Rico) (Gollner-Scheiding, 1980; Diez & Coscarón, 2015; Melo & Montemayor, 2016). Here we provide the first records from Chile.

Material examined: Chile Metropolitan Region, Maipú, Quebrada de la Plata, 33° 29' S. 70° 53' W. 520 m, 4. XI. 2015, J. F. Campodonico leg., 2XX 1 MEUC, 1 HRCC; Chile, Metropolitan Region, El Alfalfal, I II-2009, R. Perez de Arce leg. 1X1?- HRCC Maule región: Armerillo, 35°42' S. 71°05' W. 500 m., I I-2015, J. F. Campodonico leg., 1X HRCC; Quinamavida, 13- XI-1966, R. Charlin leg., 1X2?? MEUC.

ACKNOWLEDGEMENTS

Remarks. Xenogenus species are hard to identify because of their variability; however, male genitalia characters are strongly useful (Gollner-Scheiding, 1980, Diez & Coscarón, 2015; Fig. 1). Furthermore, to identify females, these are usually just associated with males correctly identified using genitalia (Diez & Coscarón, 2015). The presence of X. picturatum in Chile is not rare as it is widely present in the surrounding countries

LITERATURE CITED

Coreoidea Species File (2021) Coreoidea Species File Online. Versión 5.0/5.0. Accessed on Jan 18, 2021. Available at http://Coreoidea.SpeciesFile.org. [ Links ]

Diez, F., & Coscarón, M.C. (2015) Contribution to the knowledge of Patagonia, Argentina: redescription of the genus Xenogenus Berg 1883 (Hemiptera: Heteroptera:Rhopalidae) and description of immature stages of Xenogenus gracilis Reed, 1899. Zootaxa, 3919(3), 573-582. [ Links ]

Faúndez, E.I. (2016) The Coreoidea Leach, 1815 (Hemiptera: Heteroptera) of Magallanes Region: Checklist and identification key to the species. Anales del Instituto de la Patagonia, 44(1), 39-42. [ Links ]

Faúndez, E.I., Carvajal, M.A., & Sarmiento, C. (2020) Detection of the Box elder bug Boisea trivittata (Say, 1825) (Heteroptera: Rhopalidae) in Chile. Heteroptera Poloniae Acta Faunistica, 14, 125-126. [ Links ]

Gollner-Scheiding, U. (1980) Einige bemerkungen zu den gattungen Corizus Fallén, 1814, und Xenogenus Berg, 1883 (Heteroptera, Rhopalidae). Mitteilungen aus dem Zoologischen Museum in Berlín, 54, 111-121. [ Links ]

Melo, M.C., & Montemayor, S.I. (2016) Biodiversity of the scentless plant bugs (Hemiptera: Rhopalidae) in southern South America. Journal of Natural History, 50(3-4), 163-200. [ Links ]

Reed, E.C. (1899) Sinopsis de los Hemípteros de Chile, Primera parte (continuación). Revista Chilena de Historia Natural, 3(4), 37-49. [ Links ]

Schaefer, C.W., & Kotulski, J. (2000) Plant scentless bugs (Rhopalidae). Heteroptera of Economic Importance. (ed. Schaefer C.W., & Panizzi, A.R.), pp. 309-319. CRC press, Boca Raton. [ Links ]

Received: September 20, 2020; Revised: January 21, 2021; Accepted: March 29, 2021

This is an open-access article distributed under the terms of the Creative Commons Attribution License