Pterinopelma sazimai

Dataset
Revalidation of Pterinopelma Pocock 1901 with description of a new species and the female of Pterinopelma vitiosum (Keyserling 1891) (Araneae: Theraphosidae: Theraphosinae): Rank
SPECIES: Published in
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: 1-18, DOI: 10.5281/zenodo.205607

Classification

kingdom
Animalia: phylum
Arthropoda: class
Arachnida: order
Araneae: family
Theraphosidae: genus
Pterinopelma: species
Pterinopelma sazimai

description

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 p 0 - 0 - 1 ap, patella 0, tibia v 0 - 0 - 2 ap, r 0 - 0 - 1; leg I: femur 0, patella 0, tibia v 0 - 1 - 2 ap, p 0 - 0 - 2 ap, metatarsus v 0 - 0 - 1 ap; leg II: femur 0, patella 0, tibia d 0 - 1 - 0, r 0 - 0 - 1 ap, p 0 - 0 - 1 ap; metatarsus v 0 - 0 - 3 ap, p 0 - 0 - 1 ap; leg III: femur 0, patella 0, tibia v 0 - 1 - 2 ap, p 0 - 0 - 1, metatarsus v 0 - 2 - 3 ap, p 1 - 2 - 1 ap, r 0 - 0 - 1 (1 ap); leg IV: femur 0, patella 0, tibia v 1 - 1 - 2 ap, p 1 - 1 - 0, r 0 - 1 - 2 (1 ap), metatarsus d 0 - 0 - 1 ap, v 3 - 5 - 5 (3 ap), p 0 - 1 - 1, r 0 - 1 - 2 ap. 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 p 0 - 0 - 1 ap, patella p 0 - 2 - 0, tibia v 1 - 0 - 0, p 2 - 2 - 2 (1 ap); leg I: femur p 1 - 0 - 2, patella p 0 - 1 - 0, tibia v 1 - 2 - 0, p 1 - 0 - 0, metatarsus v 0 - 0 - 1 a, p 1 - 1 - 0, r 0 - 0 - 2 (1 ap); leg II: femur r 0 - 0 - 1 ap, patela p 0 - 1 - 0, tibia v 2 - 3 - 2 ap, p 2 - 2 - 121 ap), r 1 - 1 - 2 (1 ap); metatarsus v 3 - 3 - 1 ap, p 1 - 1 - 2 ap, r 1 - 1 - 2 (1 ap); leg III: femur p 0 - 0 - 1 ap, r 0 - 1 - 1, patella p 1 - 1 - 1, r 0 - 1 - 0, tibia v 2 - 2 - 4 (3 ap), p 3 - 2 - 4 (1 ap), r 2 - 1 - 1; metatarsus v 4 - 2 - 4 ap, p 3 - 1 - 5 (4 ap), r 1 - 1 - 3 (1 ap); leg IV: femur p 0 - 1 - 0, r 0 - 0 - 1, patella p 0 - 1 - 0, r 0 - 1 - 0, tibia v 3 - 6 - 6 (3 ap), p 4 - 2 - 2 ap, r 1 - 1 - 2 (1 ap), metatarsus v 5 - 4 - 9 (3 ap), p 3 - 4 - 10 (3 ap), r 0 - 2 - 5 (1 ap). 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.

diagnosis

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).

distribution

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 900 m), 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 1300 m a. s. l. The female holotype was crossing a trail, in the afternoon (4 p. m.).

etymology

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.

materials_examined

Holotype. Female, Brazil, state of Bahia, Andaraí, Parque Nacional da Chapada Diamantina (S 12 ° 46 ' 9.21 '' W 41 ° 28 ' 6.79 ''), 1.262 m a. s. l., ZUEC, Fukushima, C. S., Bertani, R. & Nagahama, R. H., 17 February 2008. Paratypes: female, Brazil, state of Minas Gerais, Santana do Riacho, Parque Nacional da Serra do Cipó [S 19 ° 17 ' W 43 ° 35 '], ZUEC, I. Sazima et al., 13 – 15 December 1971; two males IBSP 111631, same locality, M. T. V. A. Campos, May 1993. Additional material examined. Three juveniles, Brazil, state of Bahia, Mucugê, Parque Nacional da Chapada Diamantina (S 12 o 45 ’ 4.18 " W 41 o 30 ’ 3.73 "), Bertani, R., Fukushima, C. S. & Nagahama, R. H., 17 February 2008, are maintained alive in the laboratory.

Name

Homonyms: Pterinopelma sazimai