Umbyquyra caxiuana, 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 : 41-44

Umbyquyra caxiuana gen. et sp. nov.

urn:lsid:zoobank.org:act:50CC5123-97AD-432D-AA63-A003BB696BE7

Figs 5C , 27–29

Diagnosis

Species of Umbuquyra caxiuana gen. et sp. nov. are distinguished from those of the other species by the large and procurve fovea ( Fig. 5C ), male palpal bulb with a shortened and compact tegulum, a superior keel very evident being parallel to prolateral accessory keels ( Fig. 28B ). The female can be distinguished by a spermathecae with globular SR, close to each other emerging from a common base forming a V shape ( Fig. 27D ).

Etymology

The species epithet is a noun in apposition taken from the type locality.

Type material

Holotype

BRAZIL: ♂, Pará, Melgaço, Floresta Nacional de Caxiuanã , 1°47′32.3″ S, 51°26′2.5″ W, 28 May 2003, J.A.P. Barreiros and C.O. Araújo leg. ( MPEG 0967 ).

Paratypes

BRAZIL: Pará, 1 ♀, Melgaço, Floresta Nacional de Caxiuanã, 1°47′32.3″ S, 51°26′2.5″ W, 4 Oct. 2002, A. Chagas leg. ( MPEG 0177); 1 ♂, same collection data as for preceding, 22 Oct. 2003, J.A. Barreiros leg. ( IBSP 168432); 1 ♀, same collection data as for preceding, Nov. 2002 ( IBSP 168431).

Additional material examined

BRAZIL: Pará: 1 ♂, Belém, 1°24′18.3″ S, 48°28′30.1″ W, 18 Nov. 1978, R.F. da Silva leg. ( IBSP 111213); 1 ♂, Santarém, 2°27′34.6″ S, 54°42′17.1″ W, 1991, no data on collector ( IBSP 107574); 1 ♀, Floresta Nacional de Caxiuanã, 1°47′32.3″ S, 51°26′2.5″ W, 26 May 2003, J.A.P Barreiros leg. ( MPEG 0963); 1 ♀, same collection data as for preceding, 27 Mar. 2002 ( MPEG 0194); 1 ♂, same collection data as for preceding ( MPEG 05108); 1 ♂, same collection data as for preceding, Oct. 2003, J.A.P. Barreiros leg. ( MPEG 0937); 1 ♂, São Miguel do Guama, 1°36′43.0″ S, 47°28′52.3″ W, 27 Jun. 2004, Feitosa leg. ( MPEG 5158); 1 ♂, same collection data as for preceding, 23 Jul. 2003, J.A.P. Barreiros leg. ( MPEG 0965); 1 ♀, same collection data as for preceding ( MPEG 0197); 1 ♂, same collection data as for preceding, 2003, J.A. Barreiros leg. ( MPEG 0966); 1 ♂, same collection data as for preceding, 2002, M. Santos and Santos leg. ( MPEG 09698); 1 ♂, Juruti, 02º28′22.1″ S, 56º12′29.4″ W, 14 Feb. 2007, A. Lima and I. Pimenta leg. ( MPEG 15450); 1 ♀, same collection data as for preceding, 8 Jun. 2007, A. Lima and I. Pimenta leg. ( MPEG 15451); 1 ♂, same collection data as for preceding, 9 Jun. 2007, N.F. Lo-Man-Hung leg. ( MPEG 15452); 1 ♀, same collection data as for preceding, 17 Nov. 2007, Souza leg. ( MPEG 15453).

Description

Male (holotype MPEG 0967)

In ethanol: same color as U. belterra gen. et sp. nov. Total length: 47.0. Carapace: 20.8 long, 17.4 wide. Clypeus: 0.5. Eye tubercle 2.0 long, 2.8 wide. AME; 0.5 long, 0.5 wide; PME 0.4 long, 0.3 wide; ALE: 0.7 long, 0.5 wide; PLE 0.35 long, 0.4 wide. Basal segment of chelicerae with 10 teeth. Labium: 2.4 long, 2.5 wide, with 123 cuspules. Endites with 210–206 cuspules. Stridulatory bristles with around 20 bristles on palp trochanter, large and very long; stridulatory bristles on trochanter of leg I not so large, but surpassing 50 bristles ( Fig. 28 E–F). Palp: femur 9.7, patella 3.1, tibia 9.7, tarsus 3.6, total 26.1. Leg I femur 17.4, patella 6.2, tibia 14.7, metatarsus 14, tarsus 9.4, total 61.7. II 16.5, 5.3, 15.1, 13.4, 8.5, 58.8. III 16.2, 7, 12.7, 15.7, 8.4, total 60. IV 16.2, 8.0, 16.7, 22, 9.4, 72.3. Spination: palp: femur d0-0-1app, tibia d0-0-1p-1p-1-2ap, p0-0-1-1-1-0ap. Legs I femur d0-0-1app, tibia v0-0-0-1r-1ap, p0-1-0-0ap, r0-1-0-1-0-0-0ap, metatarsus v0-1r-0-0ap. II femur, 0-0-0-1app, tibia v0-1-0-1apr-1app, p0-0-0-1-0ap, metatarsus v0-1-1-0-0app, p0- 1-0-0ap. III femur d0-0-1apr, tibia v0-0-1-1-0-1app-1apr, p0-1-0-1-0ap, r0-1-0-1-0-1ap, metatarsus v0- 1r-1p-0-1r-1p-0-1app-1ap-2apr, p1-0-1-0-1-1ap, r0-1-0-0ap. IV tibia v0-0-1r-1p-1p-1r-1p-1app-1ap-1apr, p0-1-0-1-0ap, r0-0-1-1ap, metatarsus d0-0-1r-0-0ap, v1p-1-1r-1-1p-1-1p-1r-1-1r-1r-1p-1r-1r-1apr-1app, p1-0-1-0-0-1ap, r0-1-0-1-2ap. Tibial apophysis of leg I: retrolateral branch elongated with two strong distal spines with three median setae on tubercle; prolateral branch projected with long distal and subdistal spines ( Figs 27C , 28D ). PLS basal, median and apical segments 2.1, 2.6, 3.5 long, respectively.

Female (paratype, MPEG 0177)

In ethanol: same color as male. Total length 52. Clypeus 0.4. AME 0.4 long, 0.4 wide; PME 0.2 long, 0.2 wide; ALE 0.2 long, 0.5 wide; PLE 0.2 long, 0.4 wide. Basal segment of chelicerae with 10 teeth. Labium 2 long, 2.5 wide, with 98 cuspules. Endites with 111–100 cuspules pointed. Eye tubercle 1.6 long, 2.8 wide. Stridulatory bristles as in male. Palp: femur 7.8, patella 4.6, tibia 4.1, tarsus 4.2, total 20.7. Leg I 11, 8.2, 6.3, 3.8, 3.5, 32.8. II 9.6, 6, 6.6, 7, 3.8, 33. III 8.1, 5.8, 7, 8.3, 4.1, 33.3. IV 10.5, 6.1, 8.6, 11.6, 4.2, 41. Spination: palp: tibia v1-0-1r-1r-1apr, p0-1-0ap. Legs I femur d0-0-1p-0ap, tibia v0-1-0-0-1ap, metatarsus v0-1-0-0-0-1ap-1apr. II tibia v0-1-0-1ap, p0-1-1-0ap, metatarsus v0-1-0-1app-1apr, p0-1-0ap, r0-0-2ap. III tibia v0-0-1app-1apr, p1-0-0ap, metatarsus d0-0-1r-0-0-1-0ap, v0-1-1p-1r-0-1r-1app, p1-1-1ap. IV tibia v-0-1p-1-1app-1apr, p0-1-1ap, metatarsus d0-0-1-0ap, v1r-1r-1p-1r-2r-1p-1r-1r-1apr. PLS: basal, median and apical segments 4.0, 3.4, 3.8 long, respectively. Spermathecae with oval basal area ( Fig. 27D ).

Distribution

Brazil: state of Pará ( Fig. 29 ).

Figures

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.

Fig. 27. Umbyquyra caxiuana gen. et sp. nov. A–C. Holotype, ♂, Floresta Nacional de Caxiuanã, Pará, Brazil (MPEG 0967). A. Palp, prolateral. B. retrolateral. C. Tibial apophysis, retrolateral. D. Paratype, ♀, same locality, spermathecae, dorsal (MPEG 0177).

Fig. 28. Umbyquyra caxiuana gen. et sp. nov., holotype, ♂, Floresta Nacional de Caxiuanã, Pará, Brazil (MPEG 0967). A. Palp, prolateral. B. Anterolateral. C. Retrolateral. D. Tibial apophysis, retrolateral. E. Stridulatory organ, trochanter. F. Same, trochanter I. Abbreviations: see Material and methods.

Fig. 29. Geographic distribution records of species of Umbyquyra gen. nov.: U. belterra gen. et sp. nov., U. caxiuana gen. et sp. nov., U. tucurui gen. et sp. nov. and U. tapajos gen. et sp. nov.