The exotic delphacid Leptodelphax maculigera (Hemiptera: Fulgoroidea) in Argentina: taxonomy and biological aspects
Leptodelphax maculigera (Stål) (Hemiptera, Fulgoroidea) is reported for the first time in Argentina. It is native to the Afrotropical region and recently recorded in South America in corn-growing areas in Brazil as a potential vector of “corn stunt” complex pathogens. Specimens have been periodicall...
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Sociedad Entomológica Argentina
2025
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/23164 https://www.biotaxa.org/RSEA/article/view/87015 https://doi.org/10.25085/rsea.840211 |
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| author | Marino de Remes Lenicov, Ana María Mariani, Roxana Almada, Melina Soledad Saluso, Adriana Szwarc, Diego Ernesto |
| author_browse | Almada, Melina Soledad Mariani, Roxana Marino de Remes Lenicov, Ana María Saluso, Adriana Szwarc, Diego Ernesto |
| author_facet | Marino de Remes Lenicov, Ana María Mariani, Roxana Almada, Melina Soledad Saluso, Adriana Szwarc, Diego Ernesto |
| author_sort | Marino de Remes Lenicov, Ana María |
| collection | INTA Digital |
| description | Leptodelphax maculigera (Stål) (Hemiptera, Fulgoroidea) is reported for the first time in Argentina. It is native to the Afrotropical region and recently recorded in South America in corn-growing areas in Brazil as a potential vector of “corn stunt” complex pathogens. Specimens have been periodically collected since July 2024 on several cereals and forage crops at the commercial and experimental fields of the National Agricultural Technology Institute (INTA), Argentina. Complementary morphological characters that distinguish adults of both sexes are described and illustrated, and the anatomical features of the fifth-instar nymphs are detailed to provide taxonomic elements that allow differentiating it from other species of delphacids present in the Argentine cereal region. Adults are slender with a pale coloration and a facial black spot between the frons and clypeus, with distinctive male and female genitalia. Nymphs of the fifth-instar are of yellowish whitish coloration, with a similar black facial spot but located centrally on frons. These morphological traits serve as diagnostic characters for distinguishing both developmental stages. The distribution range in Argentina marks the southernmost known limit of the genus. Preliminary field observations underscore the significance of Setaria sphacelata (Schumach.) (Poaceae) as a preferred host while identifying Chloris gayana Kunth and Avena sativa L. (Poaceae) as new hosts. |
| format | info:ar-repo/semantics/artículo |
| id | INTA23164 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Sociedad Entomológica Argentina |
| publisherStr | Sociedad Entomológica Argentina |
| record_format | dspace |
| spelling | INTA231642025-07-25T11:10:52Z The exotic delphacid Leptodelphax maculigera (Hemiptera: Fulgoroidea) in Argentina: taxonomy and biological aspects Marino de Remes Lenicov, Ana María Mariani, Roxana Almada, Melina Soledad Saluso, Adriana Szwarc, Diego Ernesto Delphacidae Hemiptera Identification Taxonomy Plant Pests Morphology Identificación Taxonomía Plagas de Plantas Morfología Leptodelphax maculigera Chicharrita Africana Leptodelphax maculigera (Stål) (Hemiptera, Fulgoroidea) is reported for the first time in Argentina. It is native to the Afrotropical region and recently recorded in South America in corn-growing areas in Brazil as a potential vector of “corn stunt” complex pathogens. Specimens have been periodically collected since July 2024 on several cereals and forage crops at the commercial and experimental fields of the National Agricultural Technology Institute (INTA), Argentina. Complementary morphological characters that distinguish adults of both sexes are described and illustrated, and the anatomical features of the fifth-instar nymphs are detailed to provide taxonomic elements that allow differentiating it from other species of delphacids present in the Argentine cereal region. Adults are slender with a pale coloration and a facial black spot between the frons and clypeus, with distinctive male and female genitalia. Nymphs of the fifth-instar are of yellowish whitish coloration, with a similar black facial spot but located centrally on frons. These morphological traits serve as diagnostic characters for distinguishing both developmental stages. The distribution range in Argentina marks the southernmost known limit of the genus. Preliminary field observations underscore the significance of Setaria sphacelata (Schumach.) (Poaceae) as a preferred host while identifying Chloris gayana Kunth and Avena sativa L. (Poaceae) as new hosts. Se reporta por primera vez en Argentina a Leptodelphax maculigera (Stål) (Hemiptera, Fulgoroidea), especie nativa afrotropical. Recientemente ha sido registrada en América, en zonas maiceras del Brasil, como una especie con capacidad para vehiculizar patógenos del complejo “corn stunt”. A partir de julio de 2024, se han recolectado periódicamente especímenes sobre diversos cereales y cultivos forrajeros en campos comerciales y experimentales del Instituto Nacional de Tecnología Agropecuaria (INTA), Argentina. Se describen e ilustran caracteres morfológicos complementarios que distinguen a los adultos de ambos sexos, y se detallan los rasgos anatómicos del 5to estadio ninfal, con el fin de brindar elementos taxonómicos que permitan diferenciarla de otras especies de delfácidos presentes en la región cerealera Argentina. Adultos de ambos sexos se distinguen por el cuerpo esbelto, de coloración pálida, con una distintiva mancha facial negra entre frente y clípeo, además de las estructuras genitales; el 5to estadio ninfal por la coloración blanquecina amarillenta con la mancha negra facial similar pero localizada medialmente en la frente. Su distribución en Argentina, marca el límite más austral del género. Observaciones preliminares destacan la importancia de Setaria sphacelata (Schumach.) (Poaceae) como hospedador de cría y alimentación, y se menciona a Chloris gayana Kunth y Avena sativa L. (Poaceae) como nuevos hospederos. EEA Reconquista Fil: Marino de Remes Lenicov, Ana Maria. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina Fil: Marino de Remes Lenicov, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Mariani, Roxana. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina Fil: Almada, Melina Soledad. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Reconquista; Argentina Fil: Almada, Melina Soledad. Universidad Católica de Santa Fé. Facultad de Ciencias Agropecuarias; Argentina Fil: Saluso, Adriana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina Fil: Saluso, Adriana. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina Fil: Szwarc, Diego Ernesto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Reconquista; Argentina Fil: Szwarc, Diego Ernesto. Universidad Católica de Santa Fé. Facultad de Ciencias Agropecuarias; Argentina 2025-07-25T11:07:43Z 2025-07-25T11:07:43Z 2025-07 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/23164 https://www.biotaxa.org/RSEA/article/view/87015 1851-7471 0373-5680 https://doi.org/10.25085/rsea.840211 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Sociedad Entomológica Argentina Revista de la Sociedad Entomológica Argentina 84 (2) : e0211. (2025) |
| spellingShingle | Delphacidae Hemiptera Identification Taxonomy Plant Pests Morphology Identificación Taxonomía Plagas de Plantas Morfología Leptodelphax maculigera Chicharrita Africana Marino de Remes Lenicov, Ana María Mariani, Roxana Almada, Melina Soledad Saluso, Adriana Szwarc, Diego Ernesto The exotic delphacid Leptodelphax maculigera (Hemiptera: Fulgoroidea) in Argentina: taxonomy and biological aspects |
| title | The exotic delphacid Leptodelphax maculigera (Hemiptera: Fulgoroidea) in Argentina: taxonomy and biological aspects |
| title_full | The exotic delphacid Leptodelphax maculigera (Hemiptera: Fulgoroidea) in Argentina: taxonomy and biological aspects |
| title_fullStr | The exotic delphacid Leptodelphax maculigera (Hemiptera: Fulgoroidea) in Argentina: taxonomy and biological aspects |
| title_full_unstemmed | The exotic delphacid Leptodelphax maculigera (Hemiptera: Fulgoroidea) in Argentina: taxonomy and biological aspects |
| title_short | The exotic delphacid Leptodelphax maculigera (Hemiptera: Fulgoroidea) in Argentina: taxonomy and biological aspects |
| title_sort | exotic delphacid leptodelphax maculigera hemiptera fulgoroidea in argentina taxonomy and biological aspects |
| topic | Delphacidae Hemiptera Identification Taxonomy Plant Pests Morphology Identificación Taxonomía Plagas de Plantas Morfología Leptodelphax maculigera Chicharrita Africana |
| url | http://hdl.handle.net/20.500.12123/23164 https://www.biotaxa.org/RSEA/article/view/87015 https://doi.org/10.25085/rsea.840211 |
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