The endless search for type specimens; illustrations of eleven spider (Araneae Mygalomorphae) species described by Eugène Simon Author Dupérré, Nadine 0000-0003-2195-878X Zoological Museum, Center of Natural History, Universität Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany. & Research Associate, American Museum of Natural History, New York, NY, U. S. A. nadine.duperre@uni-hamburg.de Author Tapia, Elicio 0000-0001-9005-5328 Fundación OTONGA, Calle Rither y Bolivia Quito, Ecuador. & https: // orcid. org / 0000 - 0001 - 9005 - 5328 text Zootaxa 2021 2021-04-06 4951 2 259 282 journal article 7404 10.11646/zootaxa.4951.2.3 29a4191d-6969-4e29-8e4c-9177e61b17df 1175-5326 4664047 F9842659-4211-4346-B4B2-A61ABBBA7F18 Idiops argus Simon, 1889 Fig. 14 A–D . Idiops argus Simon, 1889m : 180 (Description female). Type material. Ceph. Th.: long. 7 mill.; lat. 5,5 mill. Abd,: long. 9mill.; lat. 6,5 mill. San Esteban, Puerto cabello. Examined. Label 1. MNHN Paris AR15046, Idiops argus Simon, 1889 , Venezuela : San Esteban, Puerto Cabello, Simon E. leg. FIGURE 14. Idiops argus Simon, 1889 , female lectotype. A. Carapace, dorsal view. B. Sternum and mouthparts ventral view. C, D. Internal genitalia, dorsal view. Scale bars: 0.5mm. Label 2. Lectotype Yamamoto F.U. det. Coll. Simon no9864 Type designation. Female lectotype (AR15046) and two females, one juvenile paralectotype (AR 4169) designated here. Distribution . Venezuela Note. A second vial with 3 other specimens we also found with the following label information: Label 1. Museum Paris AR 4169, 9864 Idiops argus E.S. , Venezuela ! Idiops argus Simon 1889 , San Esteban. Puerto Cabello. Venezuela . Label 2. F.U. Yamamoto 2013, 2 females , 1 juvenile paralectotypes . We were unable to find any formal type designation in the literature by Yamamoto.