Umbyquyra gen. nov., a new tarantula spider genus from the Neotropical region (Araneae, Mygalomorphae, Theraphosidae), with a description of eight new species Author Gargiulo, Fabio de F. 7DDF3C5C-ABDD-4B85-9B8E-0B4EF8B689EC Laboratório Especial de Coleções Zoológicas, Instituto Butantan, Av. Vital Brasil, 1500, São Paulo, Brazil. fabiofgargiulo@gmail.com Author Brescovit, Antonio D. D5B81D79-AFAE-47B1-8A6E-DAB448A24BCC Laboratório Especial de Coleções Zoológicas, Instituto Butantan, Av. Vital Brasil, 1500, São Paulo, Brazil. antonio.brescovit@butantan.gov.br Author Lucas, Sylvia M. 62B39697-00B1-482F-8C4B-946BCE83484B Laboratório Especial de Coleções Zoológicas, Instituto Butantan, Av. Vital Brasil, 1500, São Paulo, Brazil. sylvia.lucas@butantan.gov.br text European Journal of Taxonomy 2018 2018-08-23 457 1 50 journal article 22295 10.5852/ejt.2018.457 38fa93d4-a7aa-45dc-8959-8b32070d950f 3817911 90509851-4A60-4A51-8D39-64457010B6EE Umbyquyra araguaia gen. et sp. nov. urn:lsid:zoobank.org:act: E0F14424-01E1-4C65-8C76-BA55DC150B86 Figs 19–20 , 30 Diagnosis Males of Umbyquyra araguaia gen. et sp. nov. differ from those of the other species by an inconspicuous tibial apophysis ( Figs 19C , 20D ) and a retrolateral branch with two strong spines, and by a straight fovea without any projections on the carapace ( Fig. 5E ). Etymology The species epithet is a noun in apposition taken from the type locality. Type material Holotype BRAZIL : ♂, Pará , Conceição do Araguaia , 8°15′10.8″ S , 49°19′11.7″ W , Jun. 1979 , W. Lourenço leg. ( IBSP 112531 ). Paratype BRAZIL : Tocantins , 1 ♂, Palmas, Serra do Lajeado, 10°06′08.6″ S , 48°14′35.8″ W , 20 Nov. 2002 , J. Nunes leg. ( IBSP 110473). Description Male ( holotype , IBSP 110473 ) In ethanol: same color as U. paranaiba gen. et sp. nov. Total length 18. Carapace 10.1 long, 8.3 wide. Clypeus 0.1. Eye tubercle 1.0 long, 1.6 wide. AME 0.25 long, 0.27 wide; PME 0.25 long, 0.2 wide; ALE 0.3 long, 0.2 wide; PLE 0.3 long, 0.2 wide. Basal segment of chelicerae with 11 teeth. Labium 1.3 long, 2.2 wide, with 103 cuspules. Endites with 122–124 cuspules. Stridulatory bristles with around 15 bristles on palp trochanter and 45 on leg I ( Fig. 19 E–F). Palp: femur 3.8, patella 2.7, tibia 4.5, tarsus 2.1, total 13.1. Leg I femur 6.7, patella 5.0, tibia 8.6, metatarsus 6.7, tarsus 4.7, total 31.7. II 6.8, 4.2, 7, 7, 3, 28. III 5.8, 3.5, 9, 11.5, 5.2, 35. IV 6.6, 3.6, 9.2 10.4, 3.7, 33.5. Spination: palp: femur tibia d0-0-1apr. Leg I tibia p0-1-0-1-2ap, metatarsus v1-0-1-1-0-1ap. II femur, 0-0-0- 1app, tibia v1-2-1ap-2app, p0-1-0-1-0ap, metatarsus d0-0-1p-0ap, v0-1-1-0-1apr-1ap-1app, p0-1-0ap. III tibia v0-0-0-1-1r-1p-0-1-0-2app-1apr, p0-0-1-0-0ap, r0-1-0-1ap, metatarsus v0-1-1p-1r-0-1-1r-1p- 1-1p-2-2ap, p0-0-1-1-0-1ap, r0-1-0-0ap. IV tibia v0-0-1-1p-1r-1-2apr, 1-1-1ap, r0-1-0ap, metatarsus d1r-0-1r-1p-0-1app-1apr, v1-1-1-1-2-1-1app-apr-1ap, p0-1-0-1ap, r0-1-0-1ap. Tibial apophysis of leg I: prolateral branch absent and two strong distal spines on retrolateral branch ( Figs 19C , 20D ). Palpal bulb with semicircular projected A and long SA ( Figs 19A , 20A ). PLS basal, median and apical segments 1.4, 1.4, 2.3 long, respectively. Female Unknown. Distribution Brazil : states of Pará and Tocantins ( Fig. 30 ).