On the Neotropical species of the spider genus Tekellina Levi, 1957 (Arachnida: Araneae: Synotaxidae) Author Estol, Narelle 771C500B-55F5-4548-A52B-55DFDF2739BA Laboratório de Genética e Biologia Molecular. Universidade do Vale do Rio dos Sinos, Av. Unisinos, 950, 93022 - 000 São Leopoldo, Rio Grande do Sul, Brazil. narelle.estol@gmail.com Author Valiati, Victor Hugo D9ABBF74-7B6F-4D0C-8446-27DD8AF7C6BA Laboratório de Genética e Biologia Molecular. Universidade do Vale do Rio dos Sinos, Av. Unisinos, 950, 93022 - 000 São Leopoldo, Rio Grande do Sul, Brazil. valiati@unisinos.br Author Brescovit, Antonio D. D5B81D79-AFAE-47B1-8A6E-DAB448A24BCC Laboratório de Coleções Zoológicas, Instituto Butantan, Av. Vital Brazil, 1500, Butantã, 05503 - 900 São Paulo, São Paulo, Brazil. antonio.brescovit@butantan.gov.br Author Rodrigues, Everton Nei Lopes 9288C215-D60B-431E-86EA-541066F82169 Universidade Estadual Paulista “ Júlio de Mesquita Filho ” (UNESP), Departamento de Morfologia e Fisiologia Animal, Via de Acesso Prof. Paulo Donato Castellane km 05, 14884 - 900 Jaboticabal, São Paulo, Brazil. enl.rodrigues@unesp.br text European Journal of Taxonomy 2024 2024-07-05 943 154 178 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2593/11825 journal article 10.5852/ejt.2024.943.2593 2118-9773 12707422 D084D207-A983-4719-91D6-C97F37071532 Genus Tekellina Levi, 1957 Tekellina Levi, 1957: 107 ( type species by original designation, Tekellina archboldi Levi, 1957 ). Tekellina – World Spider Catalog 2024 . Emended diagnosis Species of Tekellina differ from those of most Synotaxidae genera in lacking teeth on the chelicerae, in being minute-sized spiders (less than 1.5 mm , male of Tekellina minor 0.97 mm ). Males have a circular cymbium prominent in the retrolateral base ( Figs 1E , 2 E, H, L , 6B, E ), paracymbium not articulated (Fig. 22A–B, D–E, G–H, J–K) and a big conductor divided into three parts: terminal claw-like arm, coiled ribbon-shaped arm and mesal arm ( Fig. 5A–D ). Female genitalia have one pair of long receptacles sometimes twisted around the axis with various loops ( Figs 1F–G , 2F, L ) and fertilization ducts occasionally conspicuous ( Fig. 2C ). Description See Levi (1957) . Included species Tekellina includes nine Neotropical species: Tekellina araucana Marusik, Eskov & Ramirez, 2022 ; T. archboldi Levi, 1957 ; T. bella Marques & Buckup, 1993 ; T. crica Marques & Buckup, 1993 ; T. guaiba Marques & Buckup, 1993 ; T. minor Marques & Buckup, 1993 ; T. picurrucha Rodrigues & Estol sp. nov. ; T. miuda Rodrigues & Estol sp. nov. and T. miudinha Rodrigues & Estol sp. nov. ; and other three Palearctic species: Tekellina helixicis Gao & Li, 2014 (from China ); T. sadamotoi Yoshida & Ogata, 2016 (from China and Japan ) and T. yoshidai Marusik & Omelko, 2017 (from Russian Far East) ( World Spider Catalog 2024 ). With the present work, Tekellina includes a total of twelve species.