Tapinauchenius latipes L. Koch, 1875

Cifuentes, Yeimy & Bertani, Rogerio, 2022, Taxonomic revision and cladistic analysis of the tarantula genera Tapinauchenius Ausserer, 1871, Psalmopoeus Pocock, 1985, and Amazonius n. gen. (Theraphosidae, Psalmopoeinae), Zootaxa 5101 (1), pp. 1-123 : 43-46

publication ID	https://doi.org/ 10.11646/zootaxa.5101.1.1
publication LSID	lsid:zoobank.org:pub:0FD7126B-77A7-4B99-A0E7-04298368C3C4
DOI	https://doi.org/10.5281/zenodo.6316492
persistent identifier	https://treatment.plazi.org/id/03BF87CE-A31C-FFC9-FF5E-FD82FC3CF968
treatment provided by	Plazi
scientific name	Tapinauchenius latipes L. Koch, 1875
status

Treatment

Tapinauchenius latipes L. Koch, 1875 View in CoL

( Figs 19 View FIGURE 19 , 21–22 View FIGURES 21–23. 21 , 63–77 View FIGURES 63–70 View FIGURES 71–75 View FIGURES 76–77 )

Tapinauchenius latipes L. Koch View in CoL , in Ausserer, 1875: 183, pl. 6, fig. 36; Petrunkevitch 1911: 90; 1939: 290; Roewer 1942: 257; Schiapelli & Gerschman, 1945: 193, pl. XVII; Schenkel, 1953: 5, fig. 6a–b; Schmidt, 1995b: 14, fig. 2 (misidentification); Auer, Huber & Bochtler, 2007: 27, figs 35–36; World Spider Catalog 2021.

Diagnosis. Females of Tapinauchenius latipes resemble those of T. plumipes , T. cupreus , T. polybotes and T. rasti by the spermathecae with a constriction near the tip, forming a small and strongly sclerotized lobe ( Fig. 70 View FIGURES 63–70 ). They differ from all the species above by the shorter spermathecae. Additionally, they differ from T. plumipes by lacking an apical-ventral row of spiniform setae on tibia III; and legs, carapace and chelicerae lacking violet sheen. They differ from females of T. cupreus by the non-oval spermathecae, and from T. rasti and T. polybotes by the geographic distribution on South America mainland. Males of T. latipes resemble those of T. cupreus by the embolus 3.0 to 3.5 times subtegulum length in retrolateral view ( Fig. 63 View FIGURES 63–70 ). They differ from T. cupreus by embolus slender and gently curved to retrolateral side from its half ( Fig. 66 View FIGURES 63–70 ).

Type material. Holotype male from Puerto Cabello [10°28’N 68°01’W], deposited at BMNH 1961.9 .26.1, examined by RB (2003). GoogleMaps

Other material examined. TRINIDAD: Tunapuna-Piarco: Arima, Simla Biological St of Arima [10°43’N, 61°17’W], 4 males, R. West col., May 1981 ( MNRJ 7699 View Materials ); GoogleMaps 1 female, 4 immatures, same data of collection and collector ( MZUSP 76531 View Materials ); GoogleMaps 1 male same data and collector ( MZUSP 76530 View Materials ); Arena Reserve [10°43’N, 61°17’W], GoogleMaps 1 female, Mary Nieves col., 15 May 1959 (AMNH-Tap-47); Rio Claro-Mayaro : Nariva Swamp, Ex campus Bush, Bush Forest [10°22’N, 61°02’W], GoogleMaps 1 male, T H G Aitken col., 15 June 1964 (AMNH-Tap-52) GoogleMaps ; VENEZUELA: Miranda: Panaquire (10°13’01”N, 66°14’20”W), on Alocasia ; dives into water filled leaf axis when disturbed, 1 male, J. H. Frank col., 2 February 1985 ( CASENT, Exline-Peck Collection, unnumbered) GoogleMaps ; GUYANA: Bartica, Kartabo [6°23’N, 58°42’W], 1 male, without additional data (AMNH-Tap-35); 1 male, no collector, 1928 (AMNH-Tap-51) GoogleMaps .

Redescription. Male (MNRJ 7699). Total length, not including chelicerae or spinnerets 20.92. Carapace 9.79 long, 9.02 wide, 4.51 high. Chelicera: 4.24 long. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 11.4, 5.68, 9.63, 8.54, 3.75, 39.00; II: 9.54, 4.63, 9.37, 8.25, 3.78, 35.57; III: 7.98, 3.68, 6.44, 7.50, 3.53, 29.13; IV: 10.42, 4.04, 9.58, 10.53, 3.65, 38.22; Palp: 6.47, 3.66, 5.12, -, 1.76, 17.01. Midwidths: femora I–IV= 1.71, 1.70, 1.70, 1.99, palp= 1.28; patellae I–IV= 1.60, 1.61, 1.59, 1.72, palp= 1.23; tibiae I–IV= 1.44, 1.28, 1.37, 1.41, palp= 1.40; metatarsi I–IV= 1.04, 1.09, 0.97, 1.03; tarsi I–IV= 1.00, 0.87, 0.97, 0.84, palp= 1.21. Abdomen: 9.92 long, 6.00 wide. Spinnerets: PMS, 1.42 long, 0.50 wide, 1.00 apart; PLS 2.11, 1.10, 2.10; midwidths 0.74, 0.68, 0.50, respectively. Carapace: 1.08 times longer than wide; cephalic region slightly raised, thoracic striae conspicuous. Fovea: deep, straight, 0.76 wide. Eyes: eye tubercle 0.57 high, 1.49 long, 2.47 wide. Clypeus: absent. Anterior eye row straight, posterior recurved. Eye size and interdistances: AME 0.59, ALE 0.49, PME 0.37, PLE 0.43, AME–AME 0.38, AME–ALE 0.12, AME–PME 0.12, ALE–ALE 1.75, ALE–PME 0.32, PME–PME 1.23, PME–PLE 0.10, PLE–PLE 1.86, ALE–PLE 0.28. Maxilla: length to width 1.73. Cuspules: ca. 100 spread over ventral inner heel. Labium: 1.37 long, 1.52 wide, with ca. 98 cuspules spaced by one diameter from each other on anterior third. Chelicera: basal segment with 9 teeth in row. Sternum: 4.90 long, 3.90 wide.

Legs: Formula: I = IV II III. Length leg IV to leg I: 0.98. Scopula: Tarsi I–IV fully scopulate; IV with few sparse setae. Metatarsi I–II fully scopulate; III 2/3 distal; IV 1/4 distal. IV divided by rows of setae. Spination: Palps and legs (ventral apical: tibia/metatarsi): Palp 0; I: 1 behind retrolateral process of tibial apophysis; II: 2/0; III 1/2; IV 1/2. Tibial apophysis ( Figs 67–69 View FIGURES 63–70 ): two processes, retrolateral longer than prolateral, one spine at side of prolateral, one on apical part of retrolateral process. A conspicuous rounded protuberance behind retrolateral process. Metatarsus I folds on retrolateral side of tibial apophysis.

Palp ( Figs 63–66 View FIGURES 63–70 ): tegulum length 0.90, width 1.34, embolus proximal width 0.63, length 2.79. Embolus proximal portion straight. Embolus length to tegulum length: 3.10. Embolus slender and gently curved from its half to retrolateral side, distal portion narrows abruptly ending in a curved tip.

Color pattern (preserved in alcohol): Carapace, legs, palpal femora, and tibiae brown, with golden setae.

Redescription. Female (MZUSP 76531). Total length, not including chelicerae or spinnerets 25.99. Carapace 10.38 long, 8.43 wide, 5.48 high. Chelicera: 4.39 long. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 8.50, 4.80, 6.78, 6.20, 4.03, 30.31; II: 7.30, 4.81, 6.11, 5.74, 4.04, 28.00; III: 6.68, 3.64, 4.93, 5.82, 3.73, 24.80; IV: 8.72, 4.14, 8.11, 8.45, 3.99, 33.41; Palp: 6.14, 3.64, 3.82, -, 4.81, 18.41. Midwidths: femora I–IV= 1.44, 1.49, 1.46, 1.60, palp= 1.33; patellae I–IV= 1.64, 1.70, 1.48, 1.67, palp= 1.43; tibiae I–IV= 21.34, 1.76, 1.57, 1.50, 1.70, palp= 1.34; metatarsi I–IV= 1.54, 1.39, 1.17, 1.13; tarsi I–IV= 1.40, 1.38, 1.30, 1.04, palp= 1.42. Abdomen: 15.66 long, 10.7 wide. Spinnerets: PMS, 1.19 long, 0.40 wide, 0.47 apart; PLS, 1.81 basal, 0.98 middle, 2.02 distal; midwidths 0.81, 0.83, 0.54 respectively. Carapace: 1.23 times longer than wide; cephalic region slightly raised, thoracic striae conspicuous. Fovea: deep, straight, 1.26 wide. Eyes: eye tubercle 0.77 high, 1.43 long, 2.42 wide. Clypeus: absent. Anterior eye row straight, posterior slightly recurved. Eye size and interdistances: AME 0.58, ALE 0.49, PME 0.36, PLE 0.47, AME–AME 0.29, AME–ALE 0.11 AME–PME 0.14, ALE–ALE 1.66, ALE–PME 0.32, PME–PME 1.25, PME–PLE 0.12, PLE–PLE 1.81, ALE–PLE 0.28. Maxilla: length to width 1.48. Cuspules: ca. 126 spread over ventral inner heel. Labium: 1.52 long, 1.88 wide, with ca. 121 cuspules spaced by one diameter from each other on anterior third. Chelicera: basal segment with 10 teeth in row. Sternum: 5.05 long, 4.13 wide.

Legs: Formula: I = IV II III. Length leg IV to leg I: 1.10. Scopula: Tarsi I–IV fully scopulate; IV with a few sparse setae. Metatarsi I–II fully scopulate; III 1/2 distal; IV 1/4 distal. IV divided by rows of setae. Spination: Palps and legs (ventral apical: tibia/metatarsi): Palp 0; I: 0/0; II 2/0; III 1/ 2; IV 0/2.

Spermathecae ( Fig. 70 View FIGURES 63–70 ): Two spermathecae completely separated, short and triangular, with an apical wellsclerotized rounded lobe.

Color pattern (preserved in alcohol): Carapace, legs, palpal femora, and tibiae brown with violet shades; abdomen light brown with a central longitudinal line.

Distribution. Trinidad and Tobago, Guyana, Venezuela ( Figs 21–22 View FIGURES 21–23. 21 ).