Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species Fonseca-Ferreira, Rafael Guadanucci, José Paulo Leite Yamamoto, Flávio Uemori Brescovit, Antonio Domingos European Journal of Taxonomy 2021 2021-11-25 780 1 1 71 98YLP Fonseca-Ferreira, Guadanucci & Brescovit Fonseca-Ferreira, Guadanucci & Brescovit 2021 [403,1094,1625,1652] Arachnida Idiopidae Idiops Animalia Araneae 59 60 Arthropoda species sertania sp. nov.   urn:lsid:zoobank.org:act: 8C6CC368-27DF-45A0-9164-2CA32C4D0F39  Figs 4C, 32–33    Diagnosis Males of  Idiops sertania sp. nov.differ from those of other Neotropical species by having the robust embolus with a wide basal half, strongly curved dorsally, with torsion at the apical end and a conspicuous embolar lamella close to the opening of the sperm duct ( Figs 32D–F, 33E–F) and by having the palpal tibia elongated (similar to  I. germaini) ( Fig. 32C). Differs from  I. germainiby having large spines distributed along the margin of the retrolateral depression ( Figs 32C, 33D) and by the robust tibial apophysis ( Fig. 32H).    Etymology The term ʻsertaniaʼ, referenced in the specific epithet, is a tribute to the ʻsertãoʼ of Brazil, a large region of the country where these spiders occur. The term sertão refers to culturally diverse regions, far from the coast and large cities, and generally associated with rural regions with little human occupation.    Type material    Holotype BRAZIL–  Minas Gerais• ♂; Januária, Parque Nacional Cavernas do Peruaçu; 15°10′0″ S, 44°22′0″ W;  3–25 Jan. 2008; M.T. Juniorand R.S. Recoderleg.; IBSP 15348.    Paratypes BRAZIL–  Amazonas• 1 ♂; Nova Aripuanã, Santa Maria, Margem esquerda, Rio Arapuanã; 5°47′52′′ S, 60°15′55′′ W;  May 2002; M. Trefautleg.; MZUSP 21511.–   Piauí• 1 ♂; Guaribas, Parque Nacional da Serra das Confusões; 9°13′16″ S, 43°29′21″ W;  Oct. 2006; P.R.R.Silva  et al.leg.; CHNUFPI 4031. –   Ceará• 1 ♂; Crato, Floresta Nacional do Araripe; 07°27′07.3″ S, 39°19′52.4″ W; 2018; R. Azevedoleg.; IBSP 227617.–   Minas Gerais• 1 ♂; same collection data as for holotype; IBSP 15346.   Fig. 32.  Idiops sertaniaFonseca-Ferreira, Guadanucci & Brescovit sp. nov., ♂, holotype (IBSP 15348). 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). Abbreviations: EL = embolar lamella; K = keel. Scale bars = 1 mm.   Other material examined   BRAZIL–  Piauí• 5 ♂♂(SEM); Bom Jesus, Estação Ecológica de Uruçuí-Una; 08°52′5″ S, 44°57′ W;  19–29 Jan. 2001; G.G. Martinelleleg.; MZSP 21546•  2 ♂♂; União, Campus COMVAPI Ltda; 4°35′9″ S, 42°51′50″ W; 2006; J. Queiroz  et al.leg.; CHNUFPI 0032, CHNUFPI 0035•  2 ♂♂; same collection data as for preceding; CHNUFPI 0037•  3 ♂♂; same collection data as for preceding; CHNUFPI 0034•  2 ♂♂(SEM); same collection data as for preceding; CHNUFPI 0039•  2 ♂♂; same collection data as for preceding; CHNUFPI 0033•  1 ♂; same collection data as for preceding; 4°38′6″ S, 42°50′19″ W; CHNUFPI 4035•  2 ♂♂; same collection data as for preceding; CHNUFPI 0031. –   Ceará• 1 ♂; Crato, Parque Estadual Sítio do Fundão; 07°13′3″ S, 39°20′21″ W; 2018; R. Azevedoleg.; IBSP 218294•  2 ♂♂; Crato, Floresta Nacional do Araripe; 07°27′07.3″ S, 39°19′52.4″ W; 2018; R. Azevedoleg.; IBSP 218307, IBSP 227583. –   Paraíba• 1 ♂; Areia, Mata do Pau Ferro; 06°67′45.8″ S, 35°55′27″ W;  5 Aug. 2011; S.B.R. Alencar  et al.leg.; CHNUFPI 0041. –   Bahia• 1 ♂; Contendas do Sincorá, Floresta Nacional Contendas do Sincorá; 13°55′08,7″ S, 41°07′13,8″ W;  12–14 Jan. 2012; I.L.F. Magalhães  et al.leg.; IBSP 271351–   Tocantins• 1 ♂; Palmas, Taquarussu; 10°19′ S, 48°9′ W; Equipe IBSPleg.; IBSP 10415•  1 ♂; Porto Nacional, Área urbana, UHE Luiz Eduardo Magalhães; 10°42′28″ S, 48°25′1″ W; Equipe IBSPleg.; IBSP 10437. –   Goiás• 6 ♂♂; Caldas Novas, UHE Corumbá; 17°42′50″ S, 48°32′12″ W;  12–23Aug. 1996; M.T.I. Rodrigues  et al.leg.; MZSP 15656•  2 ♂♂; Colinas do Sul, Serra da Mesa; 14°01′ S, 48°12′ W;  2–15 Dec. 1995; Silvestri, Dietzand Campanerleg.; MZSP 28851•  1 ♂; Catalão, Barragem, Serra do Facão; 17°31′51.07″ S, 47°33′29.57″ W;  Jul. 2013; R.B. Martinesand R.M.C. Silveiraleg.; UFMG 4442•  4 ♂♂; Catalão, Barragem, Serra do Facão; 17°35′34″ S, 47°37′16″ W;  Jul. 2011; R.B. Martinesand R.M.C. Silveiraleg.; UFMG 4441•  1 ♂; Catalão, Barragem, Serra do Facão; 17°51′40″ S, 47°37′38″ W;  Jul. 2012; R.B. Martinesand R.M.C. Silveiraleg. UFMG 4440. –   Mato Grosso• 1 ♂; Chapada dos Guimarães; 15°27′39″ S, 55°45′0″ W;  20–30 Sep. 2000; C. Strussmannleg.; MCTP 11557•  2 ♂♂; Chapada dos Guimarães;  20–29 Sep. 2000; C. Strussmannleg.; MCTP 13614•  2 ♂♂; Chapada dos Guimarães;  20–28 Sep. 2000; C. Strussmann; MCTP 13661;  2 ♂♂; Poconé; 16°15′25″S, 56°37′22″ W; 2010–2012; D. Batistellaleg., Winkler extractor; IBSP 249196. –   Mato Grosso do Sul• 1 ♂; Três Lagoas, Fazenda Canaã; 20°45′04″ S, 51°40′42″ W;  Dec. 1967; F. Laneleg.; MZSP 7575. –   Minas Gerais• 2 ♂♂; Januária, Parque Nacional Cavernas do Peruaçu; 15°10′0″ S, 44°22′0″ W;  3–25 Jan. 2008; M. Teixeira-Juniorand R.S. Recoderleg.; IBSP 15345, IBSP 15347•  2 ♂♂; same collection data as for preceding; IBSP 210881.    Description  Male( holotypeIBSP 15348) HABITUS. See Fig. 32A. MEASUREMENTS. TBL 15.6, CL 7.7, CW 6.9, LL 1, LW 1.3, SL 4, SW 3.7. COLOR. Dark brown carapace, reddish brown legs, light brown sternum, abdomen gray ( Fig. 32A–B). PROSOMA. Carapace and ocular arrangement as shown in Fig. 32A. Eye tubercle: 0.9 long; 1.2 wide. AME-ALE distance 1. Eye diameters: AME 0.2, ALE 0.4, PME 0.2, PLE 0.5. Thoracic fovea procurved ( Fig. 32A). Labium and sternum without cuspules ( Fig. 32B). Basal segment of chelicerae with a prolateral row of 6 large teeth and 6 small retrolateral teeth, grouped in the basal half, proeminent rastellum with 11–12 spines, distals largest ( Fig. 33A–B). LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 32G. Leg I with tibial apophysis with apical branch twice the size of basal branch ( Figs 32H–I, 33C). Pseudoscopula: tarsus I weakly covered, II–IV totally covered. PALP. Tibia with conspicuous retrolateral depression and large spines distributed along its entire length ( Figs 32C, 33D); embolus with keel in retrolateral view ( Fig. 32E). PALP AND LEG MEASUREMENTS. Palp = 10.2 (2.4, 2.2, 3.9, 1.7), I = 23.6 (7.2, 3.3. 4.9, 5.4, 2.8), II = 20.8 (6.4, 2.9, 4.4, 4.8, 2.3), III = 19.3 (5.3, 2.5, 3.6, 5, 2.9), IV = 27 (7.1, 3.4, 6, 7, 3.5). SPINATION. Palp: Ti r20, Ta d0-0-2. Leg I: Pa v4, Ti v4-5-4, Mt r1-1-4, p0-0-4, Ta r3-4-3, p1-3-2. Leg II: Pa p0-0-4, r0-0-3, Ti v6-5-7, Mt p0-2-3, r2-3-4, Ta p2-2-3, r4-3-4. Leg III: Pa p1, Ti v1-2-2, p0-0-1, Mt v2-4-5, p2-2-2, Ta r4-4-5. Leg IV: Pa v0-0-2, Ti v1-1-3, Mt v9-9-11, d1-1-2, r0-0-3, p0-1-2, Ta p3-3-7, r0-0-2.    Distribution  Brazil. Widely distributed, with areas covering the phytophysiognomies of the Amazon, Caatinga and Cerrado. Records for Central-west region ( Goiás, Mato Grossoand Mato Grosso do Sul), North region (Amazonas), Northeast region ( Bahia, Cearáand Piauí) and Southeast region (northern part of Minas Gerais) ( Fig. 4C). 3414941622 2008-01-03 2008-01-25 2008-01-03 IBSP M. T. Junior & R. S. Recoder Brazil -15.166667 Parque Nacional Cavernas do Peruacu 21 -44.366665 Januaria 60 61 IBSP 15348 1 1 Minas Gerais holotype 3414941689 2002-05 MZUSP M. Trefaut Brazil Nova Aripuana -5.7977777 Santa Maria 21 -60.265278 Nova Aripuana 60 61 MZUSP 21511 1 1 Amazonas paratype 3414941645 2006-10 CHNUFPI P. R. R. Silva & et al. Brazil -9.22111 Parque Nacional da Serra das Confusoes 21 -43.489166 Guaribas 60 61 CHNUFPI 4031 1 1 Piaui paratype 3414941330 2018 IBSP R. Azevedo -7.452028 Floresta Nacional do Araripe 1 -39.331223 Crato 61 62 IBSP 227617 1 1 Ceara 3414941707 [382,1218,300,327] 2008-01-03 2008-01-25 2008-01-03 IBSP M. T. Junior & R. S. Recoder Brazil -15.166667 Minas Gerais 21 -44.366665 Januaria 61 62 IBSP 15346 1 1 Minas Gerais 3414941383 2001-01-19 2001-01-29 2001-01-19 SEM G. G. Martinelle Brazil -8.868055 Estacao Ecologica de Urucui-Una 914 -44.95 Bom Jesus 61 62 MZSP 21546 5 5 Piaui 3414941332 2006 CHNUFPI J. Queiroz & et al. Brazil Uniao -4.5858335 Campus COMVAPI Ltda 21 -42.863888 Campus 61 62 CHNUFPI 0032, CHNUFPI 0035 2 2 Piaui 3414941510 2006 CHNUFPI J. Queiroz Brazil Uniao -4.5858335 Ltda 21 -42.863888 Campus 61 62 CHNUFPI 0037 2 2 Piaui 3414941403 [670,1399,518,544] 2006 CHNUFPI J. Queiroz Brazil Uniao -4.5858335 Ltda 21 -42.863888 Campus 61 62 CHNUFPI 0034 3 3 Piaui 3414941382 [207,1020,553,579] 2006 SEM J. Queiroz Brazil Uniao -4.5858335 Ltda 21 -42.863888 Campus 61 62 CHNUFPI 0039 2 2 Piaui 3414941324 2006 CHNUFPI J. Queiroz Brazil Uniao -4.5858335 Ltda 21 -42.863888 Campus 61 62 CHNUFPI 0033 2 2 Piaui 3414941517 2006 CHNUFPI J. Queiroz Brazil Uniao -4.6349998 Ltda 21 -42.83861 Campus 61 62 CHNUFPI 4035 1 1 Piaui 3414941412 [405,1132,623,650] 2006 CHNUFPI J. Queiroz Brazil Uniao -4.6349998 Ltda 21 -42.83861 Campus 61 62 CHNUFPI 0031 2 2 Piaui 3414941307 2018 IBSP R. Azevedo Brazil -7.2175 Parque Estadual Sitio do Fundao 21 -39.339165 Crato 61 62 IBSP 218294 1 1 Ceara 3414941690 2018 IBSP R. Azevedo Brazil -7.452028 Floresta Nacional do Araripe 1 -39.331223 Crato 61 62 IBSP 218307, IBSP 227583 2 2 Ceara 3414941608 2011-08-05 CHNUFPI S. B. R. Alencar & et al. Brazil Mata do Pau Ferro -35.924168 Areia 61 62 CHNUFPI 0041 1 1 Paraiba 3414941627 2012-01-12 2012-01-14 2012-01-12 IBSP I. L. F. Magalhaes & et al. Brazil -13.919084 Floresta Nacional Contendas do Sincora 1 -41.1205 Contendas do Sincora 61 62 IBSP 271351 1 1 Bahia 3414941387 [303,1325,833,861] IBSP Equipe IBSP Brazil -10.316667 Taquarussu 1298 -48.15 Palmas 61 62 IBSP 10415 1 1 Tocantins 3414941663 IBSP Equipe IBSP Brazil Porto Nacional -10.707778 UHE Luiz Eduardo Magalhaes 21 -48.416946 Area 61 62 IBSP 10437 1 1 Tocantins 3414941553 1996-08-12 1996-08-23 1996-08-12 MZSP M. T. I. Rodrigues & et al. Brazil -17.71389 UHE Corumba 21 -48.536667 Caldas Novas 61 62 MZSP 15656 6 6 Goias 3414941679 1995-12-02 1995-12-15 1995-12-02 MZSP Silvestri & Dietz & Campaner Brazil -14.016666 Serra da Mesa 1289 -48.2 61 62 MZSP 28851 2 2 Colinas do Sul 3414941424 2013-07 UFMG R. B. Martines & R. M. C. Silveira Brazil Catalao -17.530853 Barragem 1 -47.558212 Barragem 61 62 UFMG 4442 1 1 Goias 3414941418 2011-07 UFMG R. B. Martines & R. M. C. Silveira Brazil Catalao 62 63 -17.59278 Barragem 21 -47.62111 Barragem 61 62 UFMG 4441 4 4 Goias 3414941404 2012-07 UFMG R. B. Martines & R. M. C. Silveira Brazil Catalao -17.86111 Barragem 21 -47.62722 Barragem 62 63 UFMG 4440 1 1 Goias 3414941336 2000-09-20 2000-09-30 2000-09-20 MCTP C. Strussmann Brazil -15.460834 Chapada dos Guimaraes 21 -55.75 62 63 MCTP 11557 1 1 Mato Grosso 3414941392 2000-09-20 2000-09-29 2000-09-20 MCTP C. Strussmann Brazil Chapada dos Guimaraes Chapada 62 63 MCTP 13614 2 2 Mato Grosso 3414941650 2000-09-20 2000-09-28 2000-09-20 MCTP, IBSP C. Strussmann Brazil Chapada -16.256945 Chapada dos Guimaraes 21 -56.622776 Guimaraes 62 63 MCTP 13661 2 2 Mato Grosso 3414941342 2000-09-20 2000-09-28 2000-09-20 Winkler extractor MCTP, IBSP D. Batistella Brazil Chapada -16.256945 Pocone 21 -56.622776 Guimaraes 62 63 IBSP 249196 2 2 Mato Grosso 3414941706 1967-12 MZSP F. Lane Brazil -20.751112 Fazenda Canaa 21 -51.678333 Tres Lagoas 62 63 MZSP 7575 1 1 Mato Grosso do Sul 3414941355 2008-01-03 2008-01-25 2008-01-03 IBSP M. Teixeira-Junior & R. S. Recoder Brazil -15.166667 Parque Nacional Cavernas do Peruacu 21 -44.366665 Januaria 62 63 IBSP 15345, IBSP 15347 2 2 Minas Gerais 3414941564 2008-01-03 2008-01-25 2008-01-03 IBSP M. Teixeira-Junior & R. S. Recoder Brazil -15.166667 Parque Nacional Cavernas do Peruacu 21 -44.366665 Januaria 62 63 IBSP 210881 2 2 Minas Gerais