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Species icon
Latrodectus geometricus
Viuda Parda

Family: Theridiidae
Order: Araneae
Class: Arachnida
Phylum / Division: Arthropoda
Kingdom: Animalia

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Records from Córdoba


In Argentina, the genus Latrodectus is represented by 7 species, of which only L. geometricus can be distinguished by photographs. The remaining 6 species are indistinguishable from each other through photographs and have a wide variety of dorsal markings that do not help differentiate them.

The 6 species that are indistinguishable from each other by photographs are:

Latrodectus mirabilis: In most of its geographic distribution, it does not overlap with any species, and in some areas, it overlaps with L. corallinus and L. quartus. It inhabits Patagonia, excluding the Andean-Patagonian forest and Tierra del Fuego. It also inhabits La Pampa, Buenos Aires, San Luis, and parts of Mendoza, San Juan, La Rioja, Córdoba, Santa Fe, and Entre Ríos.
Latrodectus diaguita: Its geographic distribution does not overlap with any other species. It inhabits the center of La Rioja, and parts of Catamarca and San Juan.
Latrodectus antheratus: Its geographic distribution overlaps with L. corallinus and L. mirabilis. It inhabits Formosa, Chaco, Santiago del Estero, and parts of Salta, Jujuy, Tucumán, Catamarca, Córdoba, and Santa Fe.
Latrodectus variegatus: Its geographic distribution does not overlap with any other species. It inhabits the south of Neuquén.
Latrodectus quartus: Its geographic distribution overlaps with L. mirabilis. It inhabits the center of San Luis, and parts of Mendoza, Córdoba, and La Pampa.
Latrodectus corallinus: Its geographic distribution overlaps with L. antheratus. It inhabits Formosa, Chaco, Santiago del Estero, and parts of Salta, Jujuy, Tucumán, Catamarca, La Rioja, Córdoba, and Santa Fe.

Comment by: Luciano Peralta and Jorge La Grotteria.

For the purposes of the site, records from unexamined specimens with keys should be published according to the following criteria:

Latrodectus geometricus.
Latrodectus mirabilis: When the locality does not include L. corallinus or L. quartus.
Latrodectus diaguita.
Latrodectus variegatus.
Latrodectus sp.: When the locality has overlapping geographic distributions of species.




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Last published photographs

Foto
Photography ID: 652929
  Juvenile

Cordoba capital
Córdoba
Argentina
09/21/2025
Rafael Enrique Pelufo Meier
Foto
Photography ID: 419388
  Adult

Cordoba capital
Córdoba
Argentina
04/29/2017
Brenda Karen Geisse Beskow
Foto
Photography ID: 409850
  Adult

Córdoba
Córdoba
Argentina
08/30/2020
Andrés G. Jacquat
Foto
Photography ID: 409849
  Adult

Córdoba
Córdoba
Argentina
08/30/2020
Andrés G. Jacquat
Foto
Photography ID: 348238
 
Las Varillas
Córdoba
Argentina
08/31/2019
Hugo Caverzasi
Foto
Photography ID: 311933
  Adult

Córdoba
Córdoba
Argentina
01/23/2019
Gustavo Puente
Foto
Photography ID: 311931
  Adult

Córdoba
Córdoba
Argentina
01/23/2019
Gustavo Puente
Foto
Photography ID: 196879
  Adult

Miramar
Córdoba
Argentina
08/13/2016
Guillermo Marcaida
Foto
Photography ID: 193876
  Adult

Las Varillas
Córdoba
Argentina
03/07/2017
Hugo Caverzasi
Foto
Photography ID: 60654
  Adult

Río Cuarto
Córdoba
Argentina
08/23/2014
Alejandro Da Costa
Foto
Photography ID: 24117
  Adult

Villa dolores
Córdoba
Argentina
01/19/2012
Julián Tocce



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 Reports


 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
236660621/09/2025ArgentinaCórdobaCordoba capital, Cordoba capitalRafael Enrique Pelufo Meier
200438229/02/2024ArgentinaCórdobaBarrio Cerro de las RosasFernando Hevia
128325430/08/2020ArgentinaCórdobaBarrio Alberdi, CórdobaAndrés G. Jacquat
96607131/08/2019ArgentinaCórdobaLas VarillasHugo Caverzasi
87249723/01/2019ArgentinaCórdobaPeriferia de la Ciudad, CórdobaGustavo Puente
71417001/02/2018ArgentinaCórdobaSan Sebastián, Mina Clavero2Nacho Om
131211029/04/2017ArgentinaCórdobaBarrio San Pablo, Cordoba capitalBrenda Karen Geisse Beskow
55170507/03/2017ArgentinaCórdobaLas VarillasHugo Caverzasi
56030213/08/2016ArgentinaCórdobaCostanera de Miramar., MiramarGuillermo Marcaida
17241523/08/2014ArgentinaCórdobaRío CuartoAlejandro Da Costa
Page 1

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Citation recommended:

EcoRegistros. 2026. Latrodectus geometricus - Species sheet. Acceded from https://www.ecoregistros.org on 11/04/2026.