Iberesia machadoi Decae & Cardoso, 2006
Description
Male
Prosoma with distinct pattern, cephalic part darker, some spots with silvery hairs. Prosoma length: 6.7-8.2 mm.
Body length male: 16.7-18.2 mmFemale
Prosoma with indistinct pattern, cephalic part raised. Prosoma length: 6.5-10.0 mm. Chelicerae darker than prosoma, cheliceral furrow with 6 teeth. Opisthosoma greyish, with darker, insidinct patches.
Body length female: 19.9-29.1 mmDistribution
Phenology
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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Figures
Pedipalp, retrolateral view
(Luis de la Iglesia et al. 2021)
Bulbus
(Decae et al. 2007)
Bulbus
(Decae & Cardoso 2006)
Bulbus, ventral view
(Luis de la Iglesia 2019)
Bulbus, prolateral view
(Cendrero et al. 2025)
Bulbus, retrolateral view
(Cendrero et al. 2025)
Bulbus, ventral view
(Cendrero et al. 2025)
Bulbus, prolateral view
(Geci & Sherwood 2025)
Bulbus, retrolateral view
(Geci & Sherwood 2025)
Tip of embolus
(Decae et al. 2007)
Tip of embolus
(Cendrero et al. 2025)
Prosoma, lateral view
(Decae et al. 2007)
Prosoma, dorsal view
(Luis de la Iglesia et al. 2021)
Sternum
(Luis de la Iglesia et al. 2021)
Tibial apophysis leg I, ventral view
(Geci & Sherwood 2025)
Tibia I, prolateral view
(Geci & Sherwood 2025)
Tibia I, retrolateral view
(Geci & Sherwood 2025)
Habitus
(Decae et al. 2007)
Vulva
(Decae et al. 2007)
Spermathecae
(Luis de la Iglesia 2019)
Spermathecae
(Luis de la Iglesia et al. 2021)
Prosoma, lateral view
(Decae et al. 2007)
Eyes and clypeus
(Luis de la Iglesia et al. 2021)
Sternum
(Luis de la Iglesia et al. 2021)
Spinnerets
(Decae et al. 2007)
Habitus
(Decae et al. 2007)
Distribution List
"No references" does not mean that the species does not occur in this country, but that we have not yet inserted the reference for it. We are working on it.
References
Barrientos J A, García-Sarrión R, Uribarri I, Prieto C E, Lozano J A (2019c) Algunas arañas (Araneae) del Monte Valcorchero (Plasencia, Cáceres, España). Revista Ibérica de Aracnología 34: 87-96 
Branco V V, Morano E, Cardoso P (2019) An update to the Iberian spider checklist (Araneae). Zootaxa 4614: 201-254
Cendrero J, Narro-Martín A J, Mora-Rubio C, Parejo-Pulido D (2025) Nuevas aportaciones al conocimiento de las arañas (Arachnida, Araneae) de la provincia de Badajoz (Extremadura, España). Revista Ibérica de Aracnología 46: 117-122
Decae A, Cardoso P (2006) Iberesia, a new genus of trapdoor spiders (Araneae, Nemesiidae) from Portugal & Spain. Revista Ibérica de Aracnología 12: 3-11
Decae A, Cardoso P, Selden P (2007) Taxonomic review of the Portuguese Nemesiidae (Araneae, Mygalomorphae). Revista Ibérica de Aracnología 14: 1-18
Geci D, Sherwood D (2025) Contributions to the knowledge of trapdoor spiders: descriptions of Iberesia melici sp. nov., the female of Nemesia dukagjinica Geci & Sherwood, 2025, and new distribution records of some other European nemesiids (Araneae: Nemesiidae). Arachnology 20: 485-490
Luis de la Iglesia J A (2019) A new Iberian trapdoor spider, Iberesia valdemoriana n. sp., and the first records of I. brauni and I. barbara in the Iberian Peninsula (Araneae: Nemesiidae). Arachnology 18: 156-171
Luis de la Iglesia J A, García M C, Pérez C P, Baltanás R M (2021) Iberesia castillana (Frade & Bacelar, 1931), redescription of the male, first description of the female, and a key to the presently known species of genus Iberesia (Araneae, Nemesiidae). Revista Ibérica de Aracnología 38: 163-185
WSC (2026) World Spider Catalog. Version 27. Natural History Museum Bern, online at http://wsc.nmbe.ch (13.2.2026) doi: 10.24436/2