Tapinauchenius gretae, Cifuentes & Bertani, 2022

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 : 57-62

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.6822180

persistent identifier

https://treatment.plazi.org/id/03BF87CE-A30E-FFD9-FF5E-FA46FDA2FF43

treatment provided by

Plazi

scientific name

Tapinauchenius gretae
status

n. sp.

Tapinauchenius gretae n. sp.

( Figs 19 View FIGURE 19 , 21, 23 View FIGURES 21–23. 21 , 122–144 View FIGURES 122–129 View FIGURES 130–137 View FIGURES 138–144 )

Diagnosis. Females of Tapinauchenius gretae n. sp. resemble those of T. brunneus by the large lobe on the spermathecae apex ( Fig. 129 View FIGURES 122–129 ). They differ by spermathecae shape, having the same width almost all of its length. Males of Tapinauchenius gretae n. sp. resemble those of T. brunneus by the embolus in dorsal view roughly straight with a pronounced curvature to retrolateral side at its distal portion ( Fig. 125 View FIGURES 122–129 ). They differ by the longer embolus, more than 3.5 times subtegulum length ( Fig. 122 View FIGURES 122–129 ) and by the slender embolus in dorsal view ( Fig. 125 View FIGURES 122–129 ).

Etymology. The specific epithet is a matronym in honor of Greta Thunberg, a young Swedish environmental activist who has fought against climate change and for the preservation of the planet.

Type material. Holotype male from Brazil, Amazonas , Iranduba, Vila de Paricatuba [3°05’00”S, 60°14’32”W] R. Bertani & M. Q. Almeida col., 04 November 2017 ( MZUSP 76536 View Materials ), 2 paratype females, M. Q. Almeida col., 22 April 2017 ( INPA 9100 View Materials ). GoogleMaps

Other material examined. BRAZIL: Amazonas : Presidente Figueiredo [2°03’09”S, 60°01’27”W], in Acariquara ( Minquartia guianensis ) tree trunk, 1 male, M. Q. Almeida, 15 January 2008 ( INPA 9097 View Materials ) GoogleMaps ; Manaus [3°04’S, 59°59’W] 1 male, in Acariquara ( Minquartia guianensis ) tree, 12 July 2017, M. Q. Almeida ( INPA 4882 View Materials ) GoogleMaps ; Iranduba , Vila de Paricatuba (3°05’00”S, 60°14’32”W), 1 female, R. Bertani and M. Q. Almeida col., 04 November 2017 ( MZUSP 76534 View Materials ) GoogleMaps ; 1 female, same data and collectors ( MZUSP 76535 View Materials ) GoogleMaps ; 1 male, same data and collectors ( MZUSP 76537 View Materials ) GoogleMaps ; 1 female, same data and collectors ( MZUSP 76538 View Materials ) GoogleMaps ; 1 female, R. Bertani, M. Q. Almeida and F. F. Xavier, 02 July 2018 ( MNRJ 7703 View Materials ) ; Nhamundá [2°11’26”S, 56°42’54”W], boca do Figueiredo, in bromeliad, 1 male, E.P.A. col. 18 January1968 ( MZUSP 10852 View Materials ) GoogleMaps ; Novo Airão (2°37’41.5”S, 60°57’13.6”W), 1 male, R. Bertani and M.E.E.S Oliveira, 06 November 2017 ( MNRJ 7704 View Materials ) GoogleMaps ; 1 male, same data and collectors ( MNRJ 7705 View Materials ) GoogleMaps ; Rio Preto da Eva [2°41’54”S, 59°42’02W], 1 male, M. Q. Almeida col., 06 May 2015 ( INPA 9099 View Materials ) GoogleMaps .

Description. Male holotype (MZUSP 76536). Total length, not including chelicerae or spinnerets 20.55. Carapace 9.75 long, 8.37 wide, 2.01 high. Chelicera: 4.81 long. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 10.75, 5.54, 9.54, 8.22, 4.10, 38.15; II: 9.60, 4.98, 8.06, 7.72, 3.99, 34.35; III: 7.86, 3.94, 6.30, 7.21, 3.61, 28.92; IV: 10.10, 4.44, 9.29, 9.82, 3.53, 37.18; Palp: 6.37, 3.64, 5.39, -, 1.51, 16.91. Midwidths: femora I–IV= 1.86, 1.82, 1.88, 1.75, palp= 1.22; patellae I–IV= 1.51, 1.71, 1.69, 1.78, palp= 1.65; tibiae I–IV= 1.40, 1.26, 1.66, 1.43, palp= 1.22; metatarsi I–IV= 0.98, 0.87, 0.94, 0.82; tarsi I–IV= 0.88, 0.79, 0.92, 0.78, palp= 1.32. Abdomen: 10.80 long, 6.45 wide. Spinnerets: PMS, 1.43 long, 055 wide, 0.26 apart; PLS, 2.34 basal, 1.71 middle, 2.80 distal; midwidths 0.99, 0.73, 0.63, respectively. Carapace: 1.16 times longer than wide; cephalic region slightly raised, thoracic striae conspicuous. Fovea: shallow, straight, 0.96 wide. Eyes: tubercle 0.40 high, 1.36 long, 2.46 wide. Clypeus: absent. Anterior row straight, posterior recurved. Eye size and interdistances: AME 0.64, ALE 0.51, PME 0.32, PLE 0.41, AME–AME 0.35, AME–ALE 0.17, AME–PME 0.17, ALE–ALE 1.75, ALE–PME 0.33, PME–PME 1.37, PME– PLE 0.13, PLE–PLE 1.91, ALE–PLE 0.23. Maxilla: length to width 1.66. Cuspules: ca. 135 spread over ventral inner heel. Labium: 1.21 long, 1.58 wide, with ca. 114 cuspules spaced by one diameter from each other on anterior third. Chelicera: basal segment with 8 teeth in row. Sternum: 4.92 long, 3.89 wide.

Legs: Formula: I = IV II III. Length leg IV to leg I: 0.97. Scopula: Tarsi I–IV fully scopulate; IV with a few sparse setae. Metatarsi I–II fully scopulate; III 2/3 distal; IV 1/3 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 1/1. Tibial apophysis ( Figs 126–128 View FIGURES 122–129 ) with two processes, retrolateral larger than prolateral, one spine at side of prolateral, another on apical part of retrolateral process. A conspicuous rounded protuberance behind retrolateral process. Metatarsus I folds on retrolateral side of tibial apophysis.

Palp ( Figs 122–125 View FIGURES 122–129 ): tegulum length 0.77, width 1.01, embolus proximal width 0.43, length 2.86. Embolus proximal portion straight. Embolus length to tegulum: 3.71, roughly straight in dorsal view with pronounced curvature to retrolateral side at its distal portion. Embolus distal portion narrows abruptly ending in curved tip.

Color pattern (preserved in alcohol): Carapace, chelicerae, legs, palps and abdomen brown covered with light brown setae. Maxillae, sternum, labium and anterior half of coxa brown, posterior half of coxae light brown.

Description. Female paratype (INPA 9100). Total length, not including chelicerae or spinnerets 30.02. Carapace 14.92 long, 10.76 wide, 8.04 high. Chelicera: 9.96 long. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 11.35, 7.51, 10.41, 8.97, 5.09, 43.33, II: 10.98, 7.58, 10.69, 8.98, 4.58, 42.81; III: 8.70, 5.64, 7.41, 8.44, 4.12, 34.31; IV: 11.01, 6.10, 10.81, 11.58, 3.86, 43.36; Palp: 7.44, 4.90, 5.50, -, 5.81, 23.6. Midwidths: femora I–IV= 2.19, 2.09, 2.36, 2.42, palp= 2.13; patellae I–IV= 2.11, 2.45, 2.07, 2.51, palp=2.37; tibiae I–IV= 2.03, 1.88, 2.27, 2.17, palp= 1.85; metatarsi I–IV=1.75, 1.69, 1.39, 1.33; tarsi I–IV= 1.65, 1.47, 1.55, 1.24, palp= 1.50. Abdomen: 14.96 long, 9.44 wide. Spinnerets: PMS, 1.05 long, 0.48 wide, 0.29 apart; PLS, 1.37 basal, 1.22 middle, 1.82 distal; midwidths 0.71, 0.73, 0.61, respectively. Carapace: 1.39 times longer than wide; cephalic region slightly raised, thoracic striae conspicuous. Fovea: deep, straight, 0.84 wide. Eyes: eye tubercle 0.57 high, 0.88 long, 1.55 wide. Clypeus: absent. Anterior eye row straight, posterior slightly recurved. Eye size and interdistances: AME 0.35, ALE 0.33, PME 0.19, PLE 0.30, AME–AME 0.19, AME–ALE 0.13, AME–PME 0.13, ALE–ALE 1.10, ALE–PME 0.20, PME–PME 0.89, PME–PLE 0.11, PLE–PLE 1.18, ALE–PLE 0.18. Maxilla: length to width 1.60. Cuspules: ca. 148 spread over ventral inner heel. Labium: 1.05 long, 1.19 wide, with ca. 136 cuspules spaced by one diameter from each other on anterior third. Chelicera: basal segment with 9 teeth in row. Sternum: 3.53 long, 2.54 wide.

Legs: Formula: I = IV II III. Length leg IV to leg I: 1.00. 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 0/ 2; IV 0/2.

Spermathecae ( Fig. 129 View FIGURES 122–129 ): Two spermathecae completely separated, elongate and almost the same width all its length, with a sclerotized apical rounded lobe of almost half diameter of spermatheca midwidth.

Color pattern (in vivo): Carapace, legs, palpal femora and tibiae brown, with blue-violet shades; abdomen purple with a proximal transverse dark line connected with a central vertical line forming a “T” ( Fig. 138 View FIGURES 138–144 ).

Distribution. Brazil ( Figs 21, 23 View FIGURES 21–23. 21 ).

R

Departamento de Geologia, Universidad de Chile