Umbyquyra cuiaba Gargiulo & Brescovit & Lucas 2018, gen. et sp. nov.

Umbyquyra cuiaba gen. et sp. nov.

urn:lsid:zoobank.org:act: 75D2C35B-4325-402E-A169-0748BEB42334

Figs 16, 17, 18 C–D, 31

Diagnosis

Males and females of Umbyquyra cuiaba gen. et sp. nov. resemble those of U. palmarum gen. et comb. nov. by a large procurved fovea delimitating the projection of the cephalic region (Fig. 5D) and by a male palpal bulb with the shape and size of keels, but differ by the tegulum being more compact (Figs 16 A–B, 17A–C) and by females having a spermathecae with a very narrow basal area (Fig. 16D).

Etymology

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

Type material

Holotype

BRAZIL: ♂, Mato Grosso, Cuiabá, 15°36′10.2″ S, 56°05′47.9″ W, 21 Oct. 2007, M. Shiraiwa leg. (IBSP 167423).

Paratypes

BRAZIL: Mato Grosso: 1 ♀, Canarana, 13°33′32.3″ S, 52°16′06.8″ W, 16 Jul. 2000, R.A.K. Ribeiro leg. (IBSP 108933); 1 ♂, Cuiabá, 15°36′10.2″ S, 56°05′47.9″ W, 03 Sep. 2013, F.B.P. Bettiol leg.

(UFMT 0974); 1 ♂, same collection data as for preceding, Oct. 1972, G.R. Kloss and F. Val leg. (MZSP 28890); 1 ♂, same collection data as for preceding, Nov. 2006 (UFMT 0972).

Additional material

BRAZIL: Pará: 2 ♂♂, Marabá, 5°21′26.5″ S, 49°06′33.3″ W (IBSP 107423). – Mato Grosso: 1 ♂, Cuiabá, 15°36′10.2″ S, 56°05′47.9″ W, 8 Oct. 1989, M. Serrano leg. (IBSP 167428); 1 ♂, same collection data as for preceding, 8 Sep. 2000, M. Shiraiwa leg. (UFMT 0969); 1 ♀, Barra do Garças, 15°53′26.7″ S, 52°15′43.1″ W, Feb. 1990, F.T. Carvalho leg. (IBSP 107159); 1 ♀, Parque Nacional da Chapada dos Guimarães, near Cachoeira Véu de Noiva, 15°24′22.9″ S, 55°50′1.1″ W, 11 Aug. 2015, R.P. Indicatti and B. Gambaré leg. (IBSP 167419); 1 ♂, Base UFMT, Pirizal, 16°14′26.8″ S, 56°22′33.1″ W, 28 Dec. 2012, A. Junior leg. (UFMT 0971); 1 ♂, Acorizal, 15°11′53.0″ S, 56°21′59.8″ W, 2 Sep. 2013, A.S. Santos leg. (UFMT 0973); 2 ♂♂, Várzea Grande, 15°39′23.1″ S, 56°08′12.0″ W, 17 Jun. 1989, G.A. Silva leg. (IBSP 107159).

Description

Male (holotype, IBSP 10728)

In life: light brown carapace and legs. Abdomen dark brown covered by red hairs with dark patch on dorsal side (Fig. 16F). In ethanol: same color as U. paranaiba gen. et sp. nov. Total length: 33.0. Carapace: 13.5 long, 12.5 wide. Clypeus: 0.4. Eye tubercle: 1.6 long, 2.1 wide. Eyes: anterior row slightly procurved and posterior recurved (Fig. 16E). AME: 0.3 long, 0.3 wide; PME: 0.25 long, 0.17 wide; ALE: 0.2 long, 0.35 wide; PLE: 0.2 long, 0.35 wide. Basal segment of chelicerae with 11 teeth. Labium: 2.0 long, 2.0 wide, with 112 cuspules. Endites with 150–155 cuspules. Stridulatory bristles with around 15 bristles on palp trochanter and 45 on leg I (Fig. 17 E–F). Palp: femur 7, patella 2.6, tibia 7.4, tarsus 2.7, total 20. Leg I femur 10.8, patella 4.5, tibia 9.4, metatarsus 10.3, tarsus 6.7, total 41.7. II 12.7, 2.5, 8.5, 10.1, 6.6, 40.4. III 10.5, 2.0, 8.4, 9.7, 5.7, 36.3. IV 11.4, 3.0, 9.6, 11.2, 5.8, 50. Spination: palp: femur d0-0-2app, tibia v0-1p-0ap, p1-2-1-1-1-1-2-1-1-3ap, r0-1-3ap. Legs I tibia v2-1-1r-1-1r-1- 1ap-1apr-1app, r0-1-3ap, metatarsus v-1-0-0-1ap. II tibia v1-1r-1-1-1ap, p0-1-0-1-0ap, metatarsus v0- 1-1-0-0-1ap, p0-1-0ap. III femur d0-0-1apr, tibia d0-0-1r-1apr, v1-1-0-1apr-2app, p0-1-1ap, r1-1-0-1ap, metatarsus d0-1p-1r-1p-0-0ap, v1-1p-1-1p-0-1apr-1ap-1app, p0-1-0-0ap, r1-1-1-1ap. IV tibia v1-1-1-2- 1r-1p-1-0ap, p0-1-1-0ap, r0-1-0-1-0-1ap, metatarsus d0-1r-1p-0-1ap, v1-1-1p-1r-1p-1r-2app-2apr, p0- 0-1-0ap, r0-1-0-0-1ap. Metatarsus I with a slight basal curvature. Tibial apophysis of leg I: retrolateral branch projected with two strong distal spines with 2-3 median setae; prolateral branch very short with a distal spine and a sub basal spine (Figs 16C, 17D). PLS basal, median and apical segments 1.8, 1.8, 2.0 long, respectively.

Female (paratype, IBSP 8933)

In ethanol: same color as Umbyquyra paranaiba gen. et sp. nov., except black abdomen in the posterior half (Fig. 16F). Total length: 31. Carapace 13.5 long, 11 wide. Clypeus 0.35. Eye tubercle 1.2 long, 2.0 wide. AME 0.4 long, 0.35 wide; PME 0.25 long, 0.25 wide; ALE 0.25 long, 0.45 wide; PLE 0.25 long, 0.2 wide. Basal segment of chelicerae with 10 teeth. Labium 1.5 long, 2 wide, with 100 cuspules. Endites with 120–125 cuspules. Stridulatory bristles as in male. Palp: femur 8.1, patella 1.7 tibia 4.2, tarsus 5, total 19. Leg I femur 9.6, patella 3.0, tibia 8.3, metatarsus 5.6, tarsus 4.2, total

30.7. II femur 6.8, patella 3.5, tibia 6.1, metatarsus 4.8, tarsus 3.8, total 25. III femur 6.8, patella 4.0, tibia 4.7, metatarsus 6.7, tarsus 4.0, total 26.2. IV femur 7.0, patella 4.0, tibia 10, metatarsus 10.5, tarsus 4.2, total 35.7. Spination: palp: femur d0-0-2app, tibia v0-1p-0ap, p1-2-1-1-1-1-2-1-1-3ap, r0- 1-3ap. Leg I tibia v2-1-1r-1-1r-1-1ap-1apr-1app, r0-1-3ap, metatarsus v-1-0-0-1ap. II tibia v1-1r-1-1- 1ap, p0-1-0-1-0ap, metatarsus v0-1-1-0-0-1ap, p0-1-0ap. III femur d0-0-1apr, tibia d0-0-1r-1apr, v1- 1-0-1apr-2app, p0-1-1ap, r1-1-0-1ap, metatarsus d0-1p-1r-1p-0-0ap, v1-1p-1-1p-0-1apr-1ap-1app, p0-1-0-0ap, r1-1-1-1ap. IV tibia v1-1-1-2-1r-1p-1-0ap, p0-1-1-0ap, r0-1-0-1-0-1ap, metatarsus d0- 1r-1p-0-1ap, v1-1-1p-1r-1p-1r-2app-2apr, p0-0-1-0ap, r0-1-0-0-1ap. Metatarsus I with a slight basal curvature. PS basal, median and apical segments 1.8, 1.8, 2.0 long, respectively. Spermathecae with oval and elongated RS, with short ducts, apart from each other by approximately three times their diameter (Fig. 16D).

Distribution

Brazil: states of Mato Grosso and Pará (Fig. 31).

Natural history

This species is very aggressive, raising the abdomen or legs I when disturbed (Fig. 18D, H). The female from Parque Nacional da Chapada dos Guimarães (IBSP 167419) was collected in a dirt hill, inside a hole with a 3 cm opening diameter which did not contain any silk.