Umbyquyra araguaia, Gargiulo & Brescovit & Lucas, 2018

Gargiulo, Fabio de F., Brescovit, Antonio D. & Lucas, Sylvia M., 2018, Umbyquyra gen. nov., a new tarantula spider genus from the Neotropical region (Araneae, Mygalomorphae, Theraphosidae), with a description of eight new species, European Journal of Taxonomy 457, pp. 1-50 : 30-31

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 ).

Figures

Fig. 19. Umbyquyra araguaia gen. et sp. nov., paratype, ♂, Serra do Lajeado, Tocantins, Brazil (IBSP 110473). A. Palp, prolateral. B. Retrolateral. C. Tibial apophysis, retrolateral.

Fig. 20. Umbyquyra araguaia gen. et sp. nov., paratype, ♂, Serra do Lajeado, Tocantins, Brazil (IBSP 110473). A. Palp, prolateral. B. Anterolateral. C. Retrolateral. D. Tibial apophysis, retrolateral. E. Stridulatory organ, palp trochanter. F. Trochanter I. Abbreviations: see Material and methods.

Fig. 30. Geographic distribution records of species of Umbyquyra gen. nov.: U. acuminata (Schmidt & Tesmoingt in Schmidt, 2005) gen. et comb. nov., U. palmarum (Schiapelli & Gerschman, 1945) gen. et comb. nov., U. araguaia gen. et sp. nov., U. paranaiba gen. et sp. nov. and U. sapezal gen. et sp. nov.

Fig. 5. Fovea, carapace. A. Umbyquyra schimidti gen. et sp. nov. B. U. sapezal gen. et sp. nov. C. U. caxiuana gen. et sp. nov. D. U. cuiaba gen. et sp. nov. E. U. paranaiba gen. et sp. nov. F. U. belterra gen. et sp. nov.