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 3103 10.5852/ejt.2021.780.1581 41b8f51f-1d31-44c0-851e-2697e4e9497f 2118-9773 5761280 932663A6-D83D-49E0-B1F7-87F7DA8DC086 Idiops germaini Simon, 1892 Figs 3D , 5B , 18–19 Idiops germaini Simon, 1892: 92 . Idiops germaini – Mello-Leitão 1923: 47 . — Fukami & Lucas 2005: 6 , figs 8–10. Diagnosis Males of Idiops germaini differ from those of other Neotropical species of Idiops by the long and slender palpal tibia, with the retrolateral depression restricted to the apical portion ( Figs 18C , 19D ), and by having the tibial apophysis reduced to two long spines inserted on a low tubercle ( Figs 18G–I , 19C ). Females with spermathecae composed of short ducts and fully sclerotized receptacles, almost twice the diameter of the duct ( Fig. 18L ). Type material Holotype BRAZIL – Rio de Janeiro • ♂ ; Rio de Janeiro ; P. Germain leg.; MNHN 417 . Paratype BRAZIL – Rio de Janeiro • 1 ♀ ; same collection data as for holotype; MNHN 9977 . Other material examined BRAZIL – Rio de Janeiro • 1 ♂ ( SEM ); Nova Iguaçu , Parque Municipal de Nova Iguaçu ; 22°45′35′′ S , 43°27′6′′ W ; 20 May 2004 ; R.L.C. Baptista leg.; MNRJ • 1 ♂ ; Nova Iguaçu , Parque Municipal de Nova Iguaçu ; 20 Jun. 2004 ; R.L.C. Baptista leg.; MNRJ • 1 ♂ ; Nova Iguaçu , Parque Municipal de Nova Iguaçu ; Jan. 2001 ; R.L.C. Baptista leg.; MNRJ • 1 ♀ ; Nova Iguaçu , Parque Municipal de Nova Iguaçu ; 22 Jan. 2005 ; D.R. Pedroso leg.; MNRJ • 1 ♀ ; Paraty , Parque Nacional da Serra da Bocaina , Trilha da Cachoeira Sete Quedas ; 23°2′30″ S , 44°39′42″ W ; 24–26 Mar. 2019 ; R.F. Ferreira , A. Galleti , I. Meirelles and R. Indicatti leg.; CAD 832 • 1 ♀ ; Angra dos Reis , Distrito de Serra DʼAgua ; 23°0′25″ S , 44°19′4″ W ; 25 Nov. 2010 ; C.A.S. Souza et al. leg.; CHNUFPI 0040 • 1 ♀ ; Mata da Tijuca ; 13 Aug.1977 ; M. Júlio leg.; UFPB Ar418 . Description Male ( holotype MNHN 417) HABITUS. See Fig. 18A . MEASUREMENTS. TBL 12, CL 6.8, CW 6.1, LL 0.8, LW 1.1, SL 3.8, SW 3.3. COLOR. Brown carapace and legs, brownish sternum and coxae ( Fig. 18A–B ), gray abdomen. PROSOMA. Carapace and ocular arrangement as shown in Fig. 18A . Eye tubercle: 1.4 long; 1.4 wide. Distance AME-ALE 0.6. Eye diameters:AME 0.4,ALE 0.3, PME 0.2, PLE 0.4. Thoracic fovea procurved ( Fig. 18A ). Labium and sternum without cuspules ( Fig. 18B ). Basal segment of chelicerae with a prolateral row of 8 teeth, seven larger and one small, and a retrolateral row with 9 small teeth, grouped in basal half ( Fig. 19A ), with distal rastellum with 10 spines, with same size ( Fig. 19B ). Fig. 18. Idiops germaini Simon, 1892 . A–I . ♂ (MRNJ). 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 . ♀, (CAD 832). J . Prosoma (dorsal view). K . Prosoma (ventral view). L . Genitalia (dorsal view). Scale bars = 1 mm. LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 18G . PALP. Tibia with a shallow retrolateral depression and spines concentrated at basal half of depression ( Figs 18C , 19D ); elongated embolus with median curvature ( Fig. 18E–F ) and a small distal embolar tooth close to sperm duct opening ( Fig. 19E–F ). PALP AND LEG MEASUREMENTS. Palp = 12 (4.4, 2, 4.2, 1.4), I = 22.9 (7.2, 3.4, 5.4, 4.8, 2.1), II = 19.9 (6.4, 2.9, 4.4, 4.4, 1.8), III = 17.2 (4.6, 2.6, 3.3, 4.7, 2), IV = 24 (6.7, 3.4, 5.6, 5.9, 2.4). SPINATION. Palp: Ti r3-4, Ta d0-0-4. Leg I: Fe d1-2-2, Ti p0-0-1, r0-2-2, Mt p0-0-2, r2-2-4, Ta p1-1-1, r2-1-2. Leg II: Fe d1-2-2, Ti v1-1-3ap, Mt p0-1-2, r2-2-2, Ta p0-1-1, r2-2-4. Leg III: Fe d1-1-1, Pa p2-5- 6, r0-0-3, Ti v1-2-2, p1-2-4, r0-1-2, Mt vv2-1-4ap, p3-2-2, r2-1- 1, Ta p2-3-3, r1-2-3. Leg IV: Fe d1-1-2, Pa p13-3-0, Ti v1-1-3, Mt v1-1-1-3, Ta p2- 2-4, r0-0-2. Female ( paratype MNHN 9977) HABITUS. See Fig. 18J . MEASUREMENTS. TBL 16.6, CL 9.1, CW 6.7, LL 1.5, LW 1, SL 4.8, SW 4. COLOR. Brown carapace and legs, brownish sternum and coxae ( Fig. 18J–K ), gray abdomen. PROSOMA. Carapace and ocular arrangement as shown in Fig. 18J . Eye tubercle: 2.3 long; 2.8 wide. Distance AME-ALE 0.9. Eye diameters:AME 0.3, ALE 0.5, PME 0.3, PLE 0.5. Thoracic fovea procurved ( Fig. 18J ). Labium with 2 cuspules ( Fig. 18K ). Maxilla with 28 cuspules, with larger cuspules concentrated in anterior prolateral and retrolateral extremities ( Fig. 18K ). Basal segment of chelicerae with a prolateral row of 6 large teeth and a retrolateral row with 13 small teeth, grouped in basal half, rastellum with 14 spines, distal ones longer ( Fig. 18K ). Fig. 19. Scanning electron micrographs of Idiops germaini Simon, 1892 , ♂ (MNRJ). A . Chelicera (retrolateral view). B . Rastellum (retrolateral view). C . Tibial apophysis (dorsal view). D . Part of the palp, showing retrolateral depression. E–F . Detail of the final portion of the embolus. E . Retrolateral view. F . Prolateral view. Abbreviation: DET = distal embolar tooth. Scale bars = 0.5 mm. PALP AND LEG MEASUREMENTS. Palp = 11.9 (4, 2.6, 2.6, 2.7), I = 13.3 (4.5, 2.9, 2.7, 2.2, 1), II = 11.8 (3.8, 2.7, 2.2, 2, 1), III = 12.9 (3.5, 2.9, 1.9, 2.6, 2), IV = 17.6 (4.8, 3.5, 3.7, 3.5, 2.1). SPINATION. Palp: Pa p0-0-1, Ti p4-9-11, r4-7-13, Ta v0-0-6, p14-9-8, r11-11-10. Leg I: Ti p3-8-11, r3-7- 15, Mt p11-8-6, r11-7-9, Ta v0-0-6, p5-4-2, r6-5-0. Leg II: Ti p1-3-6, r0-1-1, Mt p10-10-10, r5-4-2, Ta v0-0-4, p5-5-4, r3-2-0. Leg III: Pa p3-5-7, r0-0-2, Ti p4-4-4, r0-3-4, Mt v1p-0-0-2, p5-0-3, r5-1-1, Ta v0-2 -7. Leg IV: Pa p30-5-0, Ti v0-1-2, Mt v1-1-1-3ap, Ta v0-2-6. SPERMATHECAE. Ducts with translucent basal half and sclerotized apical half and spherical receptacula ( Fig. 18L ). Distribution Brazil . Found in Atlantic Forest phytophysiognomies, with records for the state of Rio de Janeiro ( Fig. 3D ).