Pterinopelma sazimai , Bertani, Rogério, Nagahama, Roberto Hiroaki & Fukushima, Caroline Sayuri, 2011

Bertani, Rogério, Nagahama, Roberto Hiroaki & Fukushima, Caroline Sayuri, 2011, Revalidation of Pterinopelma Pocock 1901 with description of a new species and the female of Pterinopelma vitiosum (Keyserling 1891) (Araneae: Theraphosidae: Theraphosinae), Zootaxa 2814, pp. 1-18: -1-7

publication ID

zt02814p018

persistent identifier

http://treatment.plazi.org/id/B73DADFC-B50C-D032-EF4A-CAB9844C37B3

treatment provided by

Jeremy

scientific name

Pterinopelma sazimai
status

sp. nov.

Pterinopelma sazimai  sp. nov.

(Figs 7-19)

Holotype. Female, Brazil, state of Bahia, Andarai, Parque Nacional da Chapada Diamantina (S12°46'9.21'' W41°28'6.79''), 1.262 m a.s.l., ZUEC, Fukushima, C. S., Bertani, R. & Nagahama, R. H., 17 February 2008.GoogleMaps  Paratypes : female, Brazil, state of Minas Gerais, Santana do Riacho, Parque Nacional da Serra do Cipo [S19°17' W43°35'], ZUEC, I. Sazima et al., 13-15 December 1971GoogleMaps  ; two males IBSP 111631, same locality, M.T.V.A. Campos , May 1993GoogleMaps  .

Additional material examined. Three juveniles, Brazil, state of Bahia, Mucuge , Parque Nacional da Chapada Diamantina (S 12°45'4.18" W 41°30'3.73"), Bertani, R., Fukushima, C. S. & Nagahama, R. H., 17 February 2008, are maintained alive in the laboratoryGoogleMaps  .

Etymology. The specific name is a patronym in honor of Dr. Ivan Sazima, an important Brazilian zoologist who was the first researcher to collect exemplars of this species in the decades of 1970 and 1980. These specimens remained as the sole exemplars of the species known for a long time.

Diagnosis. Males differ from those of P vitiosum  by the weakly developed palpal bulb keels (Figs 7-9) and the strongly curved metatarsus I (Fig. 10) touching the apex of the retrolateral tibial apophysis when folded. Females differ from those of P. vitiosum  by the presence of type III urticating hairs, the sternum longer than wide (Fig. 12) and the presence of a blue iridescence on the setae covering the body (Fig. 14).

Description. Female (holotype). Carapace 22.18 long, 19.71 wide, chelicerae 9.39. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 15.10, 9.48, 12.30, 10.72, 8.86, 56.46. II: 14.55, 9.07, 11.64, 10.56, 8.94, 54.76. III: 13.61, 8.99, 10.44, 11.87, 8.59, 53.50. IV: 16.33, 8.85, 13.37, 18.52, 8.57, 65.64. Palp: 11.74, 7.04, 9.22, -, 8.84, 36.84. Midwidths: femora I-IV=3.48, 4.18, 4.25, 3.82, palp=3.10; patellae I-IV=3.95, 3.72, 3.71, 3.82, palp=3.25; tibiae I-IV=3.23, 2.98, 3.14, 2.91, palp=3.14; metatarsi I-IV=2.15, 2.18, 2.07, 1.91; tarsi I-IV=2.07, 2.13, 2.16, 2.14, palp=2.38. Abdomen 23.10 long, 17.89 wide. Spinnerets: PMS, 2.12 long, 1.09 wide, 1.20 apart; PLS, 3.64 basal, 2.69 middle, 3.32 distal; midwidths 1.66, 1.53, 1.06, respectively.

Carapace: length to width 1.12; cephalic area raised, thoracic striae deep. Fovea: deep, straight, 2.74 wide. Carapace covered with short, slender, dense setae and bordered with long setae pointing out.

Eyes and eye tubercle: tubercle 1.09 high, length 2.11, width 3.07. Clypeus 0.55. Anterior row procurved, posterior slightly recurved. Sizes and inter-distances: AME 0.46, ALE 0.64, PME 0.31, PLE 0.78, AME-AME 0.81, AME-ALE 0.36, AME-PME 0.39, ALE-ALE 1.98, ALE-PME 0.59, PME-PME 1.37, PME-PLE 0.20, PLE-PLE 2.10, ALE-PLE 0.52, AME-PLE 0.43. Ratio of eye group width to length 1.74.

Maxillae: length to width: 1.59. Cuspules: between 100-200 spread over ventral inner heel. Lyra absent. Labium: length 2.74, width 3.35, with 155 cuspules spaced by less than one diameter from each other on anterior third center. Labio-sternal groove deep, flat, without evident sigilla.

Chelicerae: rastellum absent, basal segments with 11 and 10 teeth on promargin, on the left and right chelicera, respectively; and denticles on basal area.

Sternum (Fig. 12): length 10.53, width 6.87. Porterior angle rounded, not separating coxae IV. Sigilla: three pairs, all rounded, less than one diameter from margin.

Legs:formulla: IV I II III. Clavate trichobothria: on distal 2/3 of tarsi I-IV. Leg coxae: with sparce soft setae; stridulatory or modified setae lacking. Scopula: Tarsi I-IV fully scopulate; IV divided by rows of setae. Metatarsi I-II fully scopulated; III 1 /3, IV 1 /5 distal scopulate. Metatarsi IV not divided by row of setae. Spines: palp: femur p0-0-1ap, patella 0, tibia v0-0-2ap, r0-0-1; leg I: femur 0, patella 0, tibia v0-1-2ap, p0-0-2ap, metatarsus v0-0-1ap; leg II: femur 0, patella 0, tibia d0-1-0, r0-0-1ap, p0-0-1ap; metatarsus v0-0-3ap, p0-0-1ap; leg III: femur 0, patella 0, tibia v0-1-2ap, p0-0-1, metatarsus v0-2-3ap, p1-2-1ap, r0-0-1(1ap); leg IV: femur 0, patella 0, tibia v1-1 -2ap, p1- 1-0, r0-1-2(1ap), metatarsus d0-0-1ap, v3-5 -5(3ap), p0-1-1, r0-1-2ap. Claws: ITC absent from all legs; STC with small teeth.

Urticating hairs: Type I and III on abdomen dorsum; III on posterior and central area of abdomen and I on surronding area. Type I with region "A" longer than region "B".

Genitalia (Fig. 13): Two short spermathecae separated by heavily sclerotized short area, spermathecal stalk narrower than spermathecal bulb.

Color (Fig. 14): Carapace, coxae, labium, sternum and maxila black. Legs with black short setae and long golden setae. Femora, patellae and tibiae with distal pale rings and inconspicuous stripes on patellae. All the body with blue iridescence. Abdomen black with long red setae on dorsal area.

Description. Male (largest paratype). Carapace 16.46 long, 16.03 wide, chelicerae 7.14. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 14.51, 8.54, 11.35, 9.87, 8.59, 52.86. II: 14.43, 6.52, 10.23, 9.69, 4.57, 45.44. III: 12.30, 5.80, 9.31, 9.88, 7.29, 44.58. IV: 15.63, 6.44, 12.67, 16.14, 7.77, 58.65. Palp: 9.05, 4.03, 8.79, -, 3.01, 24.88. Midwidths: femora I-IV=3.46, 3.30, 3.83, 3.29, palp=2.41; patellae I-IV=3.43, 3.26, 3.18, 3.21, palp=2.74; tibiae I-IV=3.20, 2.69, 2.76, 2.68, palp=3.03; metatarsi I-IV=1.62, 1.78, 1.62, 1.64; tarsi I-IV=1.56, 1.49, 1.54, 1.33, palp=2.37. Abdomen 15.37 long, 9.64 wide. Spinnerets: PMS, 2.04 long, 0.91 wide, 0.69 apart; PLS, 3.29 basal, 1.95 middle, 2.72 distal; midwidths 1.20, 1.07, 0.84, respectively.

As female, except:

Carapace: length to width 1.02; cephalic area slightly raised. Fovea 3.21 wide.

Eye tubercle 0.77 high, length 2.17, width 2.68. Clypeus 0.64. Anterior eye row procurved, posterior slightly recurved. Sizes and inter-distances: AME 0.43, ALE 0.49, PME 0.29, PLE 0.42, AME-AME 0.56, AME-ALE 0.39, AME-PME 0.22, ALE-ALE 1.97, ALE-PME 0.52, PME-PME 1.31, PME-PLE 0.19, PLE-PLE 2.13, ALE-PLE 0.45, AME-PLE 0.71. Ratio of eye group width to length 2.12.

Maxillae: length to width: 1.92. Labium: length 2.33, width 2.54, with ca. 90 cuspules. Chelicerae: rastellum absent, basal segments with 11 teeth on promargin on both sides. Sternum: length 7.51, width 6.25.

Legs: Scopula: Metatarsi III 1 /2 scopulated. Spines: palp: femur p0-0-1ap, patella p0-2-0, tibia v1 -0-0, p2-2- 2(1ap); leg I: femur p1-0-2, patella p0-1-0, tibia v1-2 -0, p1-0-0, metatarsus v0-0-1a, p1-1-0, r0-0-2(1ap); leg II: femur r0-0-1ap, patela p0-1-0, tibia v2-3 -2ap, p2-2-121ap), r1-1-2 (1ap); metatarsus v3-3 -1ap, p1-1-2ap, r1 -1 - 2(1ap); leg III: femur p0-0-1ap, r0-1-1, patella p1-1-1, r0-1-0, tibia v2-2 -4(3ap), p3-2-4(1ap), r2-1-1; metatarsus v4-2 -4ap, p3-1-5(4ap), r1-1-3(1ap); leg IV: femur p0-1-0, r0-0-1, patella p0-1-0, r0-1-0, tibia v3-6 -6(3ap), p4-2- 2ap, r1-1-2(1ap), metatarsus v5-4 -9(3ap), p 3-4-10 (3ap), r0-2-5(1ap).

Palp (Figs 7-9): palpal bulb pyriform, embolus long, narrow, slightly flattened laterally at distal region. Prolateral keels present, the PS forming the embolus edge distally. PI long, with series of unequal denticles on its distal portion. A short. R rounded. SA absent. All keels extremely reduced.

Tibial apophysis on I with two straight branches originating from common base, retrolateral longest (Figs 10-11). Metatarsus I strongly curved, when folded touches apex of retrolateral tibial apophysis branch.

Color pattern (Fig. 15): As in female, but without blue iridescence.

Distribution. Brazil, States of Bahia and Minas Gerais, on the "Serra do Espinhaço " range and its disjunctions (from 21°10' to 10° S) (Fig. 19).

Natural history. Individuals were collected on campo rupestre areas (Figs 17-18), which are characterized by their height above sea level (above 900m), in association with a high degree of outcropping and consequent reduction of soil depth (Giulietti & Pirani 1988). Juveniles (Fig. 16) were found under rocks, during the day (25 o C and 64% relative humidity of air), on a campo rupestre area at about 1300m a.s.l. The female holotype was crossing a trail, in the afternoon (4 p. m.).

ZUEC

ZUEC

IBSP

Brazil,Sao Paulo, Sao Paulo, Instituto Butantan

AME

USA, Florida, Gainesville, University of Florida, Florida Museum of Natural History, Allyn Museum