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Pholcus phalangioides
(Fuesslin, 1775)
Araña De Patas Largas

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

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Other common names: Araña Patona, Araña De Las Casas.


Description: It has a somewhat elongated body and very long, thin legs, which is the most noticeable characteristic when differentiating it from spiders of other families. However, it shares this trait with other species of the Pholcidae family.

Sexual Dimorphism: Difficult to notice with the naked eye, but when observed closely, the modified pedipalps (mouthparts) of the male are visible, which serve a reproductive function. It is common to see females with their egg sac, which is circular in shape and not covered with silk, held by their chelicerae (mouthparts).

Habitat: Naturally inhabits caves and crevices, however, the species has adapted to living inside all kinds of human-made structures, both inhabited and abandoned, where it is a very abundant species.

Geographical Distribution: Cosmopolitan species, likely due to the involuntary transport of specimens by humans worldwide.

Behavior: It constructs an irregular and three-dimensional web, from which it hangs inverted. When disturbed, it performs a series of body vibrations, shaking rapidly from side to side as a defense mechanism.

Feeding: It is a sedentary species that consumes insects trapped in its web.

Author of this description: Nicolás Olejnik




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Latest feeding records




Number of Photography: 121

Foto
Photography ID: 665667
  Adult

Vicente López
Buenos Aires
Argentina
01/02/2026
Marcos Garberoglio
Foto
Photography ID: 657825
  Adult

Cabana, Unquillo
Córdoba
Argentina
10/24/2025
Manuel Eduardo Serra
Foto
Photography ID: 657824
  Adult

Cabana, Unquillo
Córdoba
Argentina
10/24/2025
Manuel Eduardo Serra
Foto
Photography ID: 632863
  Adult

Gualeguaychú
Entre Ríos
Argentina
05/02/2025
Gustavo Puente
Foto
Photography ID: 630071
  Adult

Coronel Suárez
Buenos Aires
Argentina
04/08/2025
Facundo Moyano Peña
Foto
Photography ID: 627520
  Adult

Mar de Ajó
Buenos Aires
Argentina
02/11/2025
Diego Trillo
Foto
Photography ID: 618571
  Adult

Punta del Este
Maldonado
Uruguay
01/13/2025
Barbara Wild
Foto
Photography ID: 616094
♂ ♀
  Adult

Punta del Este
Maldonado
Uruguay
12/27/2024
Barbara Wild
Foto
Photography ID: 610928
  Adult

Conesa
Río Negro
Argentina
11/26/2024
Miguel Angel Barberis
Foto
Photography ID: 606813
  Adult

San Miguel, capital
Tucumán
Argentina
10/28/2024
Viviana Fuentes



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Last Vocalizations published




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Number of Films: 1


Video ID: 5714
  Adult

Adrogué
Buenos Aires
Argentina
03/03/2023
Violeta Cicchino


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 Reports


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Number of Records: 154



Page 1 of 16
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
242285219/01/2026ArgentinaBuenos AiresLas ToninasRomán Montero
240931002/01/2026ArgentinaBuenos AiresQuinta Trabucco, Vicente LópezMarcos Garberoglio
238017028/10/2025ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Ciudad Universitaria - Costanera Norte (RECU-CN)Marcos Garberoglio
237951424/10/2025ArgentinaCórdobaReserva Natural Los Quebrachitos, Cabana, UnquilloManuel Eduardo Serra
228213202/05/2025ArgentinaEntre RíosGualeguaychúGustavo Puente
227195108/04/2025ArgentinaBuenos AiresCoronel SuárezFacundo Moyano Peña
226465511/02/2025ArgentinaBuenos AiresCiudad, Mar de AjóDiego Trillo
223621013/01/2025UruguayMaldonadoPunta del Este, Punta del EsteBarbara Wild
221552927/12/2024UruguayMaldonadoEl Chorro, Punta del EsteBarbara Wild
220078126/11/2024ArgentinaRío NegroGeneral Conesa, ConesaMiguel Angel Barberis
Page 1 of 16

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Citation recommended:

EcoRegistros. 2026. Pholcus phalangioides - Species sheet. Acceded from https://www.ecoregistros.org on 09/03/2026.










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