Actinopus is a genus of mygalomorph spiders in the family Actinopodidae. As such, they live in soil-covered burrows with a hinged top. The males wander about in search for females, which stay in their burrow for most of their life.
Taxonomy The genus was first described by Josef Anton Maximilian Perty in 1833 from the type species Actinopus tarsalis found in Brazil. The genus name comes from Ancient Greek ἀκτίς (aktís), meaning "ray, beam", and πούς (poús), meaning "foot", and thus, "ray foot". It is a senior synonym of Aussereria, Closterochilus, Pachyloscelis, and Theragretes.
Venom The few reported bites from Brazil resulted in no symptoms, indicating that they can deliver dry bites or small amounts of venom. However, they should be treated with caution due to some reports of bites causing local pain and muscle contractions. These spiders also have a low venom yield; Actinopus crassipes for example has a mean venom yield of 0.09 mg.
Species , this genus includes one hundred species:
Actinopus anselmoi Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus apalai Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus apiacas Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus argenteus Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus ariasi Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus azaghal Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus balcarce Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus bocaina Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus buritiensis Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus candango Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus caraiba (Simon, 1889) – Venezuela Actinopus castelo Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus casuhati Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus caxiuana Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus chilikuti Ríos-Tamayo & Goloboff, 2025 – Argentina Actinopus clavero Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus coboi Ríos-Tamayo, 2019 – Uruguay Actinopus cochabamba Ríos-Tamayo, 2016 – Peru, Bolivia Actinopus concinnus Miglio, Pérez-Miles & Bonaldo, 2020 – Venezuela Actinopus confusus Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus cordobensis Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus cornelli Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus coylei Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus crassipes (Keyserling, 1891) – Brazil, Paraguay, Argentina Actinopus cucutaensis Mello-Leitão, 1941 – Colombia, Venezuela, Brazil Actinopus dioi Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus dubiomaculatus Mello-Leitão, 1923 – Brazil Actinopus ducke Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus echinus Mello-Leitão, 1949 – Brazil Actinopus emas Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus embera Osorio, Sherwood & Quijano-Cuervo, 2025 – Colombia Actinopus excavatus Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus fernandezi Ríos-Tamayo, 2019 – Uruguay Actinopus fractus Mello-Leitão, 1920 – Brazil Actinopus gerschiapelliarum Ríos-Tamayo & Goloboff, 2018 – Uruguay, Argentina Actinopus goloboffi Ríos-Tamayo, 2014 – Argentina Actinopus guajara Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus harti Pocock, 1895 – Trinidad Actinopus harveyi Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus hirsutus Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus indiamuerta Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus insignis (Holmberg, 1881) – Uruguay, Argentina Actinopus ipioca Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus itacolomi Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus itapitocai Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus itaqui Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus jaboticatubas Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus jamari Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus laventana Miglio, Pérez-Miles & Bonaldo, 2020 – Uruguay, Argentina Actinopus lomalinda Miglio, Pérez-Miles & Bonaldo, 2020 – Colombia, Guyana Actinopus longipalpis C. L. Koch, 1842 – Paraguay, Uruguay, Argentina Actinopus lucasae Sherwood & Ríos-Tamayo, 2023 – Bolivia Actinopus magnus Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus mairinquensis Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus mesa Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus nattereri (Doleschall, 1871) – Brazil Actinopus nigripes (Lucas, 1834) – Brazil Actinopus obidos Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus obrerografico Nicoletta, Soresi & Ferretti, 2025 – Argentina Actinopus osbournei Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus palmar Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus pampa Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus pampulha Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus panguana Miglio, Pérez-Miles & Bonaldo, 2020 – Peru Actinopus parafundulus Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus paraitinga Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus paranensis Mello-Leitão, 1920 – Brazil Actinopus patagonia Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus piceus (Ausserer, 1871) – Brazil Actinopus pinhao Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus princeps Chamberlin, 1917 – Brazil Actinopus puelche Ríos-Tamayo & Goloboff, 2018 – Uruguay, Argentina Actinopus pusillus Mello-Leitão, 1920 – Brazil Actinopus ramirezi Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus reycali Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus reznori Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus robustus (O. Pickard-Cambridge, 1892) – Panama Actinopus rojasi (Simon, 1889) – Venezuela Actinopus rufibarbis Mello-Leitão, 1930 – Brazil Actinopus rufipes (Lucas, 1834) – Brazil Actinopus saraguro Dupérré & Tapia, 2025 – Ecuador Actinopus scalops (Simon, 1889) – Venezuela Actinopus septemtrionalis Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus simoi Ríos-Tamayo, 2019 – Uruguay Actinopus szumikae Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus taragui Ríos-Tamayo & Goloboff, 2018 – Argentina Actinopus tarsalis Perty, 1833 – Brazil (type species) Actinopus tasneemae Sherwood & Pett, 2022 – Paraguay Actinopus tatara Montenegro & Aguilera, 2023 – Chile Actinopus tetymapyta Sherwood & Pett, 2022 – Paraguay Actinopus trinotatus Mello-Leitão, 1938 – Brazil Actinopus tutu Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus urucui Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus uruguayense Ríos-Tamayo, 2019 – Uruguay Actinopus utinga Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus valencianus (Simon, 1889) – Venezuela Actinopus vilhena Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil Actinopus wallacei F. O. Pickard-Cambridge, 1896 – Brazil Actinopus xenus Chamberlin, 1917 – South America (details unknown) Actinopus xingu Miglio, Pérez-Miles & Bonaldo, 2020 – Brazil
Formerly included: A. bonneti (Zapfe, 1961) (Transferred to Plesiolena) A. gracilis (Hentz, 1842) (Transferred to Antrodiaetus)
References
Further reading
External links