Dolichothele mottai, Revollo, Irene Soliz, Junior, Pedro Ismael da Silva & Bertani, Rogerio, 2017

Revollo, Irene Soliz, Junior, Pedro Ismael da Silva & Bertani, Rogerio, 2017, Two new Dolichothele Mello-Leitao, 1923 species from Brazil and Bolivia (Araneae, Theraphosidae), ZooKeys 724, pp. 1-20 : 3-7

Dolichothele mottai sp. n. Figs 9-13, 24, 30-31, 36

Oligoxystre bolivianum ; Guadanucci 2007: 4, f. 1-12 (in part, only f. 1-8).

Dolichothele bolivianum ; Lucas and Indicatti 2015: 207 (in part).

Type material.

Holotype female, BRAZIL: Distrito Federal, Brasília, Reserva Ecológica do IBGE [16°56'S; 47°53'W], 10 July 2007, R. Bertani, P. Motta, C. S. Fukushima, R. H. Nagahama, J. Crisóstomo coll. (DZUB 8246); paratype male, BRAZIL: Distrito Federal, Brasília [15°47'S; 47°52'W], without additional data (DZUB 8248).

Other material.

BRAZIL: Distrito Federal, Brasilia, 1 male, without additional data (DZUB 131); SHIS - QI 26 Chac. 17 [15°49'S; 47°48'W], 1 female, 29 September 2002, S. S. Salles coll. (DZUB 343); Reserva Ecológica do IBGE [16°56'S; 47°53'W], cerrado, termite mound, 1 male, 02 September 2002, J. R. R. Pinto coll. (DZUB 1129); IBGE, cerrado, 43JC, 1 male, 02 October 2003, M. Milhomem coll. (DZUB 870); IBGE, termite mound, 1 female, 02 October 2014, R. Japiassu coll. (DZUB 6741); Centro de Instrução e Adestramento de Brasília-CIAB-Marinha (16°00 ’6.73” S; 47°57 ’5.82” W), termite mound, 1 female, 11 July 2007, R. Bertani, P. C. Motta, C. S. Fukushima, R. H. Nagahama, J. Crisóstomo coll. (DZUB 8247); Sobradinho [15°39'S; 47°47'W], Cond. Fraternidade, DF425, casa, 1 male, 06 September 2006, P. C. Motta coll. (DZUB 1824); same data, 1 female, 06 November 2006 (DZUB 1992); same data, 1 female, 11 January 2007, P. C. Motta coll. (DZUB 2099); Córrego do Urubú, 1 male, 06 October 2009, I. Wagas coll. (DZUB 3951), 1 male, 29 October 2007, J. Marinho coll. (DZUB 2752); Goiás: Aragarças [16°05'S; 52°14'W], 1 male, 15 July 1976, L. Edmundo coll. (MNRJ 03850); Caldas Novas [17°44'S; 48°37'W], P. E. Pescan, Cerrado s. s., coleta ativa diurna, 1 male, 01 November 2014, P. C. Motta et al. coll. (DZUB 7592); Catalão [18°09'S; 47°56'W] (Fazenda Alvorada), 1 male, January 2004, J. P. L. Guadanucci & A. Monteiro coll. (MZUSP 26076), 1 female, February 2003, J. P. L. Guadanucci coll. (MZUSP 23224); Cocalzinho de Goiás [15°46'S; 48°46'W], 1 male, 07 October 2011, I. R. Pereira Silva coll. (DZUB 4788); Mineiros, Parque Nacional das Emas [18°08'S; 52°55'W], 1 male, 5 September 1997, C. Nogueira & P. Valdujo coll. (IBSP 109493).

Differential diagnosis.

Males of D. mottai sp. n. resemble those of D. dominguense ( Guadanucci 2007, f. 26-28), D. camargorum sp. n. (Figs 14-15, 19-20, 26-27) and D. bolivianum (Figs 1-2, 4-5, 25) by the presence of a small subapical keel on male palpal bulb embolus. They differ from all these species by the very short and strongly curved embolus (Figs 9-10, 24). Females of D. mottai sp. n. (Fig. 13) resemble those of D. camargorum sp. n. (Fig. 18, 23) and D. bolivianum (Fig. 8) by the short spermathecae. They differ from D. camargorum sp. n. by the shorter and somewhat triangular spermathecae shape; from D. bolivianum sp. n. they differ by broader spermathecae. Additionally, males and females differ from all Dolichothele species by the carapace covered with iridescent red setae (Figs 28-29).

Description.

Female holotype (DZUB 8246). Carapace 9.4 long, 8.3 wide, chelicerae 4.3. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 7.1, 4.7, 4.4, 4.5, 2.9, 23.6. II: 6.6, 4.4, 4.3, 4.2, 2.5, 22.0. III: 6.0, 3.5, 3.7, 4.4, 2.7, 20.3. IV: 7.1, 4.2, 5.4, 6.1, 2.9, 25.7. Palp: 5.4, 3.6, 3.2, -, 2.9, 15.1. Mid-widths: femora I–IV = 1.5, 1.5, 1.6, 1.7, palp = 1.3; patella I–IV = 1.1, 1.2, 1.2, 1.4, palp = 1.3; tibiae I–IV = 1.5, 1.3, 1.2, 1.2, palp = 1.3; metatarsi I–IV = 1.2, 1.3, 1.2, 0.9; tarsi I–IV = 1.3, 1.3, 1.1, 1.0, palp = 1.5. Abdomen 10.8 long, 5.3 wide. Spinnerets: PMS, 1.36 long, 0.63 wide, 0.41 apart; PLS, 2.27 basal, 1.24 middle, 1.48 distal; mid-widths: 1.11, 1.08, 0.81, respectively. Carapace: length to width 1.13. Fovea: straight, deep, 1.30 wide. Eyes and eye tubercle. Tubercle 1.07 long, 1.39 wide. Clypeus 0.20 wide. Anterior row slightly procurved, posterior row slightly recurved. Sizes and inter-distances: AME 0.37, ALE 0.35, PME 0.28, PLE 0.30, AME–AME 0.36, AME–ALE 0.15, AME–PME 0.08, ALE-ALE 1.00, ALE–PME 0.30, PME–PME 0.86, PME–PLE 0.08, PLE–PLE 1.22, ALE–PLE 0.22, AME–PLE 0.30. Eye group 1.39 wide, 0.75 long. Maxillae: 3.08 long, 1.41 wide, with 22 cuspules spread over ventral inner heel. Lyra absent. Labium: 0.62 long, 1.38 wide, with 4 cuspules. Labio-sternal groove shallow, narrow, with two sigilla. Chelicerae: rastellum absent, basal segment with 8 teeth decreasing in size from distal to basal portion; and small teeth on basal area. Sternum: 4.53 long, 4.26 wide. Posterior angle rounded, not separating coxae IV. Sigilla: three pairs, all small, rounded, less than one diameter from margin. Legs: leg formula: IV I II III. Clavate trichobothria: on distal 2/3 of tarsi I–IV. Scopula: Tarsi I–IV fully scopulate, IV with two rows of setae, not separating the scopula. Metatarsi I–III fully scopulate; IV 2/3 scopulate, with two rows of setae, not separating the scopula. Spination: palp: femur p0-0-2, patella 0, tibia v0-2-2(1ap), metatarsus 0; leg I: femur p0-0-1, patella 0, tibia v0-1-1ap, p0-0-1, metatarsus v1-0-0; leg II: femur p0-0-1, patella 0, tibia v0-1-1ap, p 1-0-1, metatarsus v1-0-0; leg III: femur 0, patella 0, tibia v0-2-2ap, p1-0-1, r0-0-1; metatarsus v1-1-2ap, p1-0-1ap, r0-1-0; IV: femur r0-0-1, patella 0, tibia v1-2-3(2ap), p0-0-1, r0-0-1, metatarsus v2-0-2ap, p1-1-1, r0-1-1. Claws: ITC absent from all legs; STC lacking teeth. Genitalia (Fig. 13). Spermathecae short, triangular, with ca. 6 lobes on internal side, from tip to base. Color pattern (Fig. 28). Carapace brown covered with long metallic reddish setae. Chelicerae and legs ventrally and dorsally dark, except for black femora. Sternum, labium, maxillae, and coxae brown. Abdomen ventrally brown, dorsally black. Distal femora, patellae, tibiae and metatarsi rings not evident. Longitudinal stripes on leg articles not evident.

Male paratype

(DZUB 8248). Carapace 8.1 long, 7.3 wide, chelicerae 3.5. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 8.3, 4.6, 5.6, 5.5, 3.6, 27.6. II: 7.2, 4.4, 4.0, 5.1, 3.2, 23.9. III: 6.2, 3.3, 4.1, 5.2, 3.3, 22.1. IV: 8.2, 4.0, 6.4, 7.3, 3.7, 29.6. Palp: 4.9, 3.3, 3.7, -, 1.6, 13.5. Mid-widths: femur I–IV = 1.9, 1.8, 1.7, 1.7, palp = 1.5; patella I–IV = 1.5, 1.6, 1.6, 1.5, palp = 1.4; tibiae I–IV = 1.2, 1.3, 1.2, 1.2, palp = 1.3; metatarsi I–IV = 0.9, 0.9, 0.9, 0.8; tarsi I–IV = 1.1, 1.0, 1.0, 1.0, palp = 1.2. Abdomen 8.8 long, 5.0 wide. Spinnerets: PMS, 0.76 long, 0.45 wide, 0.25 apart; PLS, 1.13 basal, 1.06 middle, 1.60 distal; mid-widths: 0.51, 0.53, 0.39, respectively. Carapace. Length to width 1.10. Fovea: straight, deep, 1.37 wide. Eyes and eye tubercle. Tubercle 1.12 long, 1.51 wide. Clypeus 0.09 wide. Anterior eye row slightly procurved, posterior eye row slightly recurved. Sizes and inter-distances: AME 0.41, ALE 0.38, PME 0.26, PLE 0.38, AME–AME 0.08, AME–ALE 0.10, AME–PME 0.02, ALE–ALE 0.85, ALE–PME 0.29, PME–PME 0.74, PME–PLE 0.08, PLE–PLE 1.17, ALE–PLE 0.18, AME–PLE 0.31. Eye group 1.51 wide, 0.79 long. Maxillae: 2.52 long, 1.35 wide, with 8 cuspules spread over ventral inner heel. Lyra absent. Labium: 0.48 long, 1.32 wide, with 2 cuspules. Labio-sternal groove shallow, narrow, with two sigilla. Chelicerae: rastellum absent, basal segment with 8 teeth decreasing in size from distal to basal portion, with very small denticles on base. Sternum: 4.41 long, 2.70 wide. Posterior angle rounded, not separating coxae IV. Sigilla: three pairs, all small, rounded, less than one diameter from margin. Legs: leg formula: IV I II III. Clavate trichobothria: on distal 2/3 of tarsi I–IV. Scopula: tarsi I–IV fully scopulate, IV with two rows of setae, not separating the scopula. Metatarsi I–II fully scopulate; III–IV 2/3 scopulate. IV with two rows of setae, not separating the scopula. Spination: palp: femur p0-0-2, patella 0, tibia 0; leg I: femur p0-0-1, patella 0, tibia v0-1-0, p0-1-0, metatarsus 0; leg II: femur p0-0-1; patella 0, tibia v0-2-1ap, p1-0-1, metatarsus v1-0-0; leg III: femur 0, patella 0, tibia v0-2-2ap, p1-1-0, r1-0-1, metatarsus v1-0-0, r0-1-1; leg IV: femur r0-0-1, patella 0, tibia v0-1-0, p1-0-0, r2-0-1, metatarsus v1-0-1ap, p1-1-1, r0-1-1. Claws: ITC absent from all legs; STC lacking teeth. Palpal bulb (Figs 9-10, 24): pyriform, embolus narrowing abruptly at its base and curved slightly to prolateral and then 45° to the retrolateral side on its distal third ( “s” shape, as seen from above), with a small keel just after the curvature. Embolus shorter than tegulum. Male tibial apophysis (Figs 11-12) with two branches originating from a common low base, positioned distant from metatarsus. Retrolateral branch longer than prolateral, not dilated on distal portion, with a spine on its mid-length. Prolateral branch shorter than contiguous spine. Both branches inclined ca. 45° to the prolateral side. Metatarsus I slightly curved. Color pattern (Fig. 29): as in female, except chelicerae and trochanters dorsally reddish and abdomen with long reddish setae.

Etymology.

The specific name is a patronym in honor of the arachnologist Dr. Paulo Cesar Motta, for his contributions to the taxonomy and biology of mygalomorphs inhabiting the Brazilian Cerrado region.

Distribution.

Brazil, Distrito Federal and state of Goiás (Fig. 36).

Remarks.

The specimens used by Guadanucci (2007) to redescribe D. bolivianum (MZUSP 26076 and MZUSP 23224) were reanalyzed and belong to D. mottai sp. n. The female specimen (IBSP 103094) from Miranda (Agachi), state of Mato Grosso do Sul, Brazil, cited by Lucas and Indicatti (2015) as D. bolivianum has long and slender spermathecae with several lobes on apex and laterals. Therefore, it seems related with forms from eastern Brazil (see Guadanucci 2007, 2011), and probably the locality is a label mistake.

Ecology.

Dolichothele mottai sp. n. occurs on the Cerrado strictosensu from Central-Western Brazil. The female constructs silk tunnels under rocks and logs, and males were found moving between September and November when they leave their shelter to search for females, in Distrito Federal ( Motta 2014).