Umbyquyra belterra, 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 : 33-34

Umbyquyra belterra gen. et sp. nov.

urn:lsid:zoobank.org:act:E6C30EB4-D131-4060-8B26-F5394BE3AAD9

Figs 21–22 , 29

Diagnosis

Males and females of Umbyquyra belterra gen. et sp. nov. differ from those of all other species by a recurved fovea ( Fig. 5F ) and a very long prolateral inferior keel of the male palpal bulb which extends for more than half of the prolateral face of the tegulum ( Fig. 22C ). This species presents five keels, including the PAc keel near the PS keel. This is a character shared only between two species of Umbyquyra gen. nov. Females differ from those of the other species by a spermathecae with SR curved sideways, with long ducts and apart from each other by more than five times their diameter ( Fig. 21D ).

Etymology

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

Type material

Holotype

BRAZIL: ♂, Pará, Belterra, Flona do Tapajós , 2°35′46.2″ S, 54°55′50.7″ W, Oct. 2011, A. Brescovit et al. leg. ( IBSP 167421 ).

Paratypes

BRAZIL: Pará, 1 ♀, Belterra, Flona do Tapajós, 2°35′46.2″ S, 54°55′50.7″ W, Oct. 2011, A.D. Brescovit et al. leg. ( IBSP 167420); 6 ♂♂ ( IBSP 167422, IBSP 170011, IBSP 170012, FIT/UNAMA 1195, FIT/ UNAMA 615, FIT /UNAMA 616), 2 ♀♀ ( FIT /UNAMA 486, FIT /UNAMA 482), same data as for preceding.

Description

Male (holotype, IBSP 167421)

In ethanol: carapace dark-brown as dorsal face of long, 0.5 abdomen. Total length 41. Carapace 19.4 long, 16.3 wide. Clypeus 0.3. Eye tubercle 1.8 long, 2.7 wide. AME 0.5 wide; PME 0.3 long, 0.2 wide; ALE 0.3 long, 0.6 wide; PLE 0.3 long, 0.4 wide. Basal segment of chelicerae with 10 teeth. Labium: 2.2 long, 3.1 wide, with 128 cuspules. Endites with 165–168 cuspules. Stridulatory organ contains more than 10 very evident bristles on palp trochanter and leg I ( Fig. 22 E–F). Palp: femur 9.8, patella 4.2, tibia 9, tarsus 2.8, total 25.8. Tarsi II very short. Leg I femur 18.4, patella 4.7, tibia 16, metatarsus 14.3, tarsus 8.3, total 61.7. II 15.5, 3.5, 14.5, 14, 5.4, 52.9. III 16, 5.7, 12.2, 15.3, 7.8, 57. IV 18.2, 8, 16, 22.9, 9, 74. Spination: palp: tibia v0-0-1r0ap, p1-1-1-1-1-1-1-1-1ap, r0-0-1-0ap. Legs I femur d0-0-1app, tibia v2-0-2-0-2ap, p0-1-0-1-0ap, metatarsus v0-1-0-0-0-1apr-1-1app. II tibia v2-0-2-1r-1r-1app-1apr, p0-1-0-1-0ap, metatarsus v0-1-1-0-1app-1apr, p0-1-0-1ap. III femur d0-0-1apr, tibia v1-1p-1p-1-0- 1app-1apr, p0-1-0-1-0ap, r1-1-1-1app, metatarsus d0-0-0-1app-1apr, v1-1p-1p-1r-1-1p-1p-1p-1r-1app- 1-1apr, p1-0-1-1-0-1-1ap, r0-0-1-0-0-1ap. IV tibia v1-1-1r-1p-1-1p-1-1apr, p0-1-1-0-2ap, r1-0-0-1-1ap, metatarsus v1-1-1-1p-1r-1-1p-1-1r-1-1-1-1p-1-1r-1p-1-1-1app-1ap-1apr, p0-0-1-0-1ap, r0-0-1-0-0-1- 0ap. Metatarsus I with a slight basal curvature. Tibial apophysis of leg I: retrolateral branch projected with two strong distal spines with two median setae; prolateral branch projected with a distal spine and sub basal one ( Figs 21C , 22D ). PLS basal, median and apical segments 3.1, 2.6, 3.2 long, respectively. Male palp with PAc ( Fig. 22A ).

Female (paratype, IBSP 167420)

In ethanol, same color as male. Total length (damaged). Carapace (damaged). Clypeus: 0.2. AME: 0.5 long, 0.5 wide; PME 0.4 long, 0.3 wide;ALE: 0.4 long, 0.2 wide; PLE: 0.4 long, 0.3 wide. Basal segment of chelicerae with 11 teeth. Labium: 2.3 long, 3 wide. Eye tubercle 2.8 long, 2.1 wide. Stridulatory bristles as in male. Palp: femur 11.2, patella 4.5, tibia 9.8, tarsus 7.5, total 33. Tarsi II short as in male. Leg I femur 15.5, patella 9, tibia 14.2, metatarsus 11, tarsus 7.4, total 57.2. II 12.6, 8.1, 12.6, 11, 7.2, 51.5. III 13, 7.7, 12, 11, 7.1, 50.8. IV absent. Spination: palp: femur p0-1-0ap. Legs I tibia v0-0-1p- 1r-1app-1ap-2apr, metatarsus d0-1p-0ap, v-0-1-2ap. II tibia v0-1-1app-1ap-1apr, p-0-1-0ap, metatarsus v01-1-0-1app-1apr. III tibia v0-1-0-1-0-1p-1p-1apr, p0-1-0ap, metatarsus v0-1-1-0-1apr-1ap-1app, p0- 1-0ap. IV tibia d1r-1r-1apr, v0-1-1p-1ap-2app, p0-1-0-1-0ap, r0-1-0-1-0-1ap, metatarsus d1p-1r-1app, v2r-1p-1r-1p-1r-1apr-1ap, p0-1-0ap, r0-1-0ap. Spermathecae with two RS with long ducts and more or less pentagonal basal area ( Fig. 21D ).

Remarks

The female is in bad condition, so total length and carapace could not be measured.

Distribution

Brazil: state of Pará ( Fig. 29 ).

Figures

Fig. 21. Umbyquyra belterra gen. et sp. nov. A–C. Holotype, ♂, Flona do Tapajós, Belterra, Pará, Brazil (IBSP 167421). A. Palp, prolateral. B. Retrolateral. C. Tibial apophysis, retrolateral. D. Paratype, ♂, spermathecae, dorsal (IBSP 167420).

Fig. 22. Umbyquyra belterra gen. et sp. nov., holotype, ♂, Flona do Tapajós, Belterra, Pará, Brazil (IBSP 167421). A. Palp, prolateral. B. Anterolateral. C. Retrolateral. D. Tibial apophysis, retrolateral. E. Stridulatory organ, trochanter. F. 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.

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.