Umbyquyra acuminata (Schmidt & Tesmoingt in Schmidt, 2005 ) 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 : 23-25

Umbyquyra acuminata (Schmidt & Tesmoingt in Schmidt, 2005) gen. et comb. nov.

Figs 15 , 18 A–B, 30

Acanthoscurria acuminata Schmidt & Tesmoingt, 2000: 2 , figs 1–2. (nom. nud., no type depository). Acanthoscurria acuminata Schmidt & Tesmoingt in Schmidt, 2005: 4 , figs 1–2, 7.

Acanthoscurria acuminata – Schmidt 2000: 1, figs 1–2; 2003: 141, figs 235–238.

Diagnosis

Males and females of U. acuminata gen. et comb. nov. differ from those of the other species by a procurve fovea overlapped by a large projection of the cephalic region ( Fig. 15E ) and by a retrolateral branch of the tibial apophysis with three strong spines ( Fig. 15C ). Female spermathecae have a cordiform basal area resembling those of U. schmidti gen. et comb. nov., but differs from this species by the RS being more apart when compared to the other species ( Fig. 15D ).

Material examined

Holotype

BOLIVIA: 1 ♀, Province Sara , Santa Cruz de la Sierra, 16°27′37.2″ S, 63°10′52.4″ W, 1995, Verdez leg. ( SMF 3979 ).

Additional material

BOLIVIA, 1 ♂, Province Sara, Santa Cruz de la Sierra, 16°58′16.4″ S, 63°34′22.5″ W, 29 Dec. 2005, Steinbach leg. ( ZMB 47188); 2 ♀♀, same data as for preceding ( ZMB 47189, ZMB 47190).

Description

Male (ZMB 47188)

In life: dark brown with light brown joints and golden hairs completely covering dorsal side of body ( Fig. 16 ). In ethanol: same color as U. paranaiba gen. et sp. nov. Total length 37.8. Carapace 17.4 long, 15 wide. Clypeus 0.3. Eye tubercle 2.2 long, 1.7 wide. AME 0.4 long, 0.4 wide; PME 0.28 long, 0.23 wide; ALE 0.4 long, 0.3 wide; PLE 0.4 long, 0.25 wide. Basal segment of chelicerae with 12 teeth. Stridulatory bristles with around 15 bristles on palp trochanter and 45 on leg I ( Fig. 17 E–F). Palp: femur 8.3, patella 3.7, tibia 8.4, tarsus 3.7, total 24.1. Leg I femur 13.4, patella 4.5, tibia 12.5, metatarsus 12.7, tarsus 7.8, total 51. II 13.3, 4.6, 11.2, 6, 7.2, 42.3. III 11.6, 3.1, 9.5, 11.5, 6.8, 42.5. IV 15.8, 5.5, 12.8, 16.8, 7.5, 58.4. Spination: palp: tibia v0-1p-0ap, r0-1-2-1-2-1-1-1ap. Leg I femur d0-0-1app, patella v0-1-1-1-0ap, tibia d0-1p-0-0ap, v2-1r-1-0-1-1-1-1r-1-2apr, p0-0-1-0ap, r0-0-0-1-0ap, metatarsus v0- 1r-0-0ap. II femur, 0-0-0-1app, tibia v3-1r-1-1-1-1r-1-0-1apr-1app-1ap, p0-1-0-1-0-1ap, metatarsus v0-1p-1-0-0-0-1app-1ap-1apr, p0-0-0ap. III femur d0-0-1apr, tibia v2-1-0-1-2-1p-1r-0-1apr-1app, p0-1- 1-1-1-1ap, r0-1-0-1-0-0ap, metatarsus v0-0-1p-1r-0-1p-1r-0-2apr-1ap-1app, p2-1-1-1-1-0-0ap, r0-0-1- 0-0ap. IV femur d0-0-1apr, tibia v2-1-1p-1-1-1-2-1r-1apr-1app, r0-0-1-0ap, metatarsus d0-0-1r-1-1p-0- 0ap, r0-0-1-0-0ap, v1p-1r-1r-1-1p-1r-1-1-1p-1-1-1apr-1app. Tibial apophysis of leg I: prolateral branch inconspicuous with distal and sub distal spines. ( Fig. 15C ). PLS basal, median and apical segments 1.8, 1.1, 2.8 long, respectively.

Female (ZMB 47189)

In ethanol: same color as U. paranaiba gen. et sp. nov. Total length 32.2. Carapace 16.6 long, 13 wide. Clypeus 0.3. Eyes: anterior row slightly procurved and posterior recurved. AME 0.4 long, 0.4 wide; PME 0.27 long, 0.27 wide; ALE 0.48 long, 0.33 wide; PLE 0.35 long, 0.22 wide. Basal segment of chelicerae with 12 teeth. 7.0 long, 7.0 wide. Eye tubercle 1.7 long, 2.4 wide. Stridulatory bristles as in male. Palp: femur 7.6, patella 2.7, tibia 6.0, tarsus 5.5, total 21.8. Legs I femur 9.7, patella 3.5, tibia 5.3, metatarsus 4.6, tarsus 4.6, total 27.7. II femur 9.0, patella 3.0, tibia 7.0, metatarsus 5.5, tarsus 3.7, total 28.2. III femur 8.3, patella 3.0, tibia 5.5, metatarsus 6.5, tarsus 4.1, total 27.4. IV femur 8.6, patella 4.0, tibia 4.6, metatarsus 6.4, tarsus 4.2, total 27.8; Spination: palp: tibia v0-0-1p-1apr-2app, r0-0-1-0-1ap. Leg I femur d0-0-1app, tibia v0-1-0-1-1-1-1-0-1ap-1app, metatarsus v0-1-1-0-1app-1ap-1apr. II femur d0-0-1app, tibia v0-1-0-1-1-1-0-1app-1apr, metatarsus v0-1-1-0-1app-1ap-1apr. III femur d0-0-1apr, tibia v0-2-0-1-2app-1apr, p0-1-1-0-2ap, metatarsus d0-1p-1r-0-1app-2apr, p0-1-1-1-0-2ap. IV v0-1- 1-0-1app-2apr, p0-1-0-1ap, r1-1-1-0ap, metatarsus d0-1p-1r-0-1app-2apr, v1-1p-1-1p-1r-0-1apr-1ap- 1app, p1-1-1-0-1ap, r0-0-0-1ap. PLS basal, median and apical segments 2.5, 1.4, 2.0 long, respectively. Spermathecae with oval RS and long ducts, apart by approximately twice their diameter ( Fig. 15D ).

Remark

Schmidt & Tesmoingt (2000) described Acanthoscurria acuminata based on a female and a juvenile male and exuvia, respectively from Santa Cruz de la Sierra, Province Sara, Bolívia and Cuiabá, Mato Grosso, Brazil. They presented figures of the carapace with a large projection over the fovea and the aspect of the SR. Later, Schmidt & Tesmoingt (2005) described another male of this species, collected in Santa Cruz de la Sierra, Bolivia, and deposited it in the regional museum of Santa Cruz. This specimen could not be located. The female holotype is deposited in the SMF and does not have the spermathecae anymore. Moreover, the juvenile male and exuvia could not be located. The species here is transferred to Umbyquyra gen. nov. due to the presence of stridulatory bristles on the palp trochanter and leg I, male palpal bulb with short embolus, four keels and spermathecae emerging from a common base ( Fig. 15D ).

Distribution

Brazil: Cuiabá, Mato Grosso; Bolivia: Santa Cruz de la Sierra, Province Sara ( Fig. 30 ).

Figures

Fig. 15. Umbyquyra acuminata (Schmidt & Tesmoingt in Schmidt, 2005) gen. et comb. nov. A–C. ♂, Santa Cruz de la Sierra, Bolivia (ZMB 47188). A. Palp, prolateral. B. Retrolateral. C. Tibial apophysis, retrolateral. D–E. ♀, same locality (ZMB 47189). D. Spermathecae, dorsal. E. Carapace, lateral. Abbreviations: see Material and methods.

Fig. 18 (opposite page). A–B. Umbyquyra acuminata (Schmidt & Tesmoingt in Schmidt, 2005) gen. et comb. nov. Live specimen from Santa Cruz de la Sierra, Bolivia (photos by Cristian Grismado). C–F. Umbyquyra cuiaba gen. et sp. nov. C. Live specimen from Parque Nacional Chapada dos Guimarães, Mato Grosso, Brazil, dorsal. D. Defensive display. E. Inside burrow. F. Detail of burrow interior without web. G–H. Umbyquyra paranaiba gen. et sp. nov. G. Live specimen from São Paulo, São Paulo, Brazil, dorsal. H. Defensive display, frontal (C–H, photos by Rafael Indicatti).

Fig. 16. Umbyquyra cuiaba gen. et sp. nov. A–C. Holotype, ♂, Cuiabá, Mato Grosso, Brasil (IBSP 167423). A. Palp prolateral. B. Retrolateral. C. Tibial apophysis, retrolateral. D–F. Paratype, ♀, Canarana, Mato Grosso, Brazil (IBSP 108933). D. Spermathecae, dorsal. E. Eye tubercle, dorsal. F. Abdomen, dorsal.

Fig. 17. Umbyquyra cuiaba gen. et sp. nov., holotype, ♂, Cuiabá, Mato Grosso, Brazil (IBSP 167423). 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.