Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species Author Fonseca-Ferreira, Rafael 8E23FE6D-3D20-4667-9F69-15B132D9537B Pós-graduação em Ecologia, Evolução e Biodiversidade, Instituto de Biociências, Universidade Estadual Paulista, Avenida 24 A 1515, 13506 - 900 Rio Claro-SP, Brazil. rafaelbioferreira@gmail.com Author Guadanucci, José Paulo Leite D4955FF5-FE7F-4E68-AB2F-4A89593F9850 Departamento de Ecologia, Evolução e Biodiversidade, Instituto de Biociências, Universidade Estadual Paulista, Avenida 24 A 1515, 13506 - 900 Rio Claro-SP, Brazil. jose.guadanucci@unesp.br Author Yamamoto, Flávio Uemori 86719D83-2F02-4122-8CCE-D0932A3206D0 Laboratório de Coleções Zoológicas, Instituto Butantan, Av. Vital Brasil, 1500, Butantã, São Paulo, São Paulo, CEP 05503 - 900, Brazil. flayamamoto@gmail.com Author Brescovit, Antonio Domingos D5B81D79-AFAE-47B1-8A6E-DAB448A24BCC Laboratório de Coleções Zoológicas, Instituto Butantan, Av. Vital Brasil, 1500, Butantã, São Paulo, São Paulo, CEP 05503 - 900, Brazil. antonio.brescovit@butantan.gov.br text European Journal of Taxonomy 2021 2021-11-25 780 1 1 71 http://dx.doi.org/10.5852/ejt.2021.780.1581 journal article 10.5852/ejt.2021.780.1581 41b8f51f-1d31-44c0-851e-2697e4e9497f 2118-9773 5761280 932663A6-D83D-49E0-B1F7-87F7DA8DC086 Idiops carajas Fonseca-Ferreira, Zampaulo & Guadanucci, 2017 Figs 3B , 6D–E , 13–14 Idiops carajas Fonseca-Ferreira, Zampaulo & Guadanucci, 2017: 191 , figs 29–38. Emended diagnosis The male of Idiops carajas ( Figs 13A–I , 14 ) differs from the other Neotropical species, except I. petiti , by the palpal tibia having spines concentrated on the basal half of the retrolateral depression ( Figs 13C , 14D ), apophysis with a narrow rectangular apical branch ( Figs 13G–H , 14C ) and by the presence of a lateral lamella that extends along the median portion of the embolus ( Figs 13E–F ). Differs from I. petiti by having the subapical portion of the embolus thickened in dorsal view ( Fig. 13D ) and the arrow-shaped apical end in retrolateral view ( Figs 13E–F , 14E ). Females ( Fig. 13J–L ) are distinguished from congeners, except I. petiti , by having the spermathecae with a sclerotized trapezoidal base. Differs from I. petiti by the ducts having a thickened basal half and shorter apical half and by the rounded receptacles, separated from the ducts by a strong constriction ( Fig. 13L ). Type material Holotype BRAZIL Pará ; Parauapebas , FLONA Carajás Serra Norte , cave GEM-1758 ; 5°52′0.00″ S , 49°52′60.00″ W ; 23 Nov. 2010 ; R.A. Zampaulo leg.; IBSP 166619 . Paratype BRAZIL Pará 1 ♀ ; same collection data as for holotype; IBSP 166620 . Other material examined BRAZIL Amazonas 1 ♂ ; Benjamin Constant ; 4°22′58″ S , 70°1′51″ W ; 2014 ; P.S. Pompeu et al. leg.; IBSP 243963 . – Pará 1 ♂ (SEM); Paraoapebas , Serra Norte , Serra de Carajás ; 5°52′ S , 49°53′ W ; 29 Mar.–6 Apr. 1989 ; N. Degallier leg.; MPEG 0109 1 ♂ ; Flona Carajás , Cave N3-033 ; 6°6′34.92″ S , 50°11′40.11″ W ; 5–17 Mar. 2013 ; Equipe Carste leg.; IBSP 174029 1 ♂ ; Melgaço , Igarapé do Laranjal ; 1°48′21.44″ S , 50°43′0″ W ; 7 Apr. 1998 ; J.A.R. Bernardi and R.A.J. Rocha leg.; MPEG 0111 1 ♂ ; Almeirim , Rio Jari ; 00°41′25.93″ S , 52°49′9.21″ W ; 17–23 Aug. 2004 ; T. Gardner leg.; MPEG 7592 1 ♂ ; Almeirim , Rio Jari ; 3 Apr. 2005 ; T. Gardner leg.; MPEG 7589 1 ♂ ; Almeirim , Rio Jari ; 2004 ; T.C.S. Avila Pires leg.; MPEG 7591 2 ♂♂ ; Almeirim , Rio Jari ; 22 Mar. 2005 ; T. Gardner & M.A. Ribeiro Junior leg.; MPEG 7587 , MPEG 7590 1 ♂ ; Tucuruí , Base IV ; 3°46′4″ S , 49°40′22″ W ; 8–22 Feb. 1980 ; T. Gardner leg.; MPEG 0115 . Mato Grosso 1 ♂ ; Chapada dos Guimarães ; 15°27′39″ S , 55°45′0″ W ; 18 Jun. 2000 ; C. Strussmann leg.; MCTP 11192 1 ♂ ; Porto Estrela ; 15°19′26″S , 57°13′40″ W ; 5 May 2019 ; J.R. Lema , D. Castro and M. Pessoa-Silva leg.; IBSP249141 . Mato Grosso do Sul 1 ♂ ; Corumbá , Morro Santa Cruz ; 19°12′07.6″ S , 57°36′09.9″ W ; Jun. 2003 ; V.L. Ferreira leg.; MCTP 17591 . Tocantins1 ♂ ; Ananás ; 6°13′34.70″ S , 48°25′2.39″ W ; 21 Apr. 2009 ; W.U. Oliveira and M.D. Miranda leg.; UFMG 5749 . Fig. 13. Idiops carajas Fonseca-Ferreira, Zampaulo & Guadanucci, 2017 . A–I . ♂, holotype (IBSP 166619). A . Prosoma (dorsal view). B . Prosoma (ventral view). C . Part of palp (retrolateral view). D–F . Palpal bulb. D . Dorsal view. E . Retrolateral view. F . Prolateral view. G . Tibia, metatarsus and tarsus I (prolateral view). H . Tibial apophysis (prolateral view). I . Tibial apophysis and metatarsus I (dorsal view). J–L . ♀, paratype (IBSP 166620). J . Prosoma (dorsal view). K . Prosoma (ventral view). L . Genitalia (dorsal view). Abbreviation: EL = embolar lamella. Scale bars = 1 mm. Emended description Male and female recently described by Fonseca-Ferreira et al. (2017) . New data on the male and female are included. Male ( holotype IBSP 166619) PROSOMA. Basal segment of chelicerae with a prolateral row of 9 teeth, 6 large and 3 small, and 5 small retrolateral teeth ( Fig. 14A ); salient rastellum, presenting 12–13 short, thick spines with larger distal ends ( Fig. 14B ). Female ( paratype IBSP 166620) PROSOMA. Basal segment of chelicerae with a prolateral row of 9 large teeth and 5 small retrolateral teeth; robust rastellum, presenting approximately 25 short and thick spines on a tubercle. Distribution Brazil . Distributed in the phytophysiognomies of Amazon and Cerrado, with records from the west of Central-west region ( Mato Grosso , Mato Grosso do Sul ) and from the North region (Amazonas, Pará and Tocantins ) ( Fig. 3B ).