Tafana humahuaca, De Oliveira & Brescovit, 2021

De Oliveira, Luiz Fernando M. & Brescovit, Antonio Domingos, 2021, Taxonomic revision and cladistic analysis of ghost spiders of the genus Tafana Simon, 1903 (Araneae: Dionycha, Anyphaenidae), with the descriptions of twelve new species, European Journal of Taxonomy 742, pp. 1-77 : 25-27

Tafana humahuaca sp. nov.

urn:lsid:zoobank.org:act:16D23428-F7B9-48A6-93EE-95B3AE8F97DC

Figs 15 , 32J , 35

Diagnosis

Males of Tafana humahuaca sp. nov. resemble those of T. riveti and T. nevada sp. nov. by having the short embolus, but differ by having the apophysis at the base of the embolus truncated, extremely short and with excavation between the base of the embolus and the apophysis ( Fig. 15C–E ). Females resemble those of Tafana nevada sp. nov. by having the epigynal plate, but differ by having atrium narrow in the anterior region, small hood with lateral lobes extremely curved in the anterior region ( Figs 15F–G , 32J ).

Etymology

The specific name, a noun in apposition, is a tribute to ‘Quebrada de Humahuaca’, a deep canyon located in Jujuy Province, the type locality.

Material examined

Holotype ARGENTINA • 1 ♂; Jujuy Province, Santa Bárbara; [24°18′31″ S, 64°39′37″ W]; Oct. 1969; G. Williner leg.; MACN-Ar 41787 .

Paratype ARGENTINA • 1 ♀; same collection data as for holotype; Oct. 1962; MACN-Ar 41788 .

Description

Male (holotype, MACN-Ar 41787)

COLOR. Exemplar probably discolored. Carapace orange ( Fig. 15A ). Labium, sternum and endites yellow. Chelicerae yellow. Legs I–III yellow with spots on the articles. Abdomen with dark spots ( Fig. 15A ).

MEASUREMENTS. Total length 5.3, carapace length 2.3, width 1.7. Clypeus height 0.06. Eye diameters and interdistances: AME 0.06, ALE 0.1, PME 0.1, PLE 0.08; AME–AME 0.02, AME–ALE 0.02, PME– PME 0.1, PME–PLE 0.08, ALE–PLE 0.02. Chelicerae 0.8 long, with five promarginal teeth and four retromarginal denticles.

LEG MEASUREMENTS. I—lost; II—femur 1.7/ patella 0.73 /tibia 1.7/ metatarsus 1.6 /tarsus 0.84 / total 6.57; III—1.6 / 0.7/ 1.4 /1.4 / 0.7/ 5.8; IV—lost.

LEG SPINATION. II—tibia v2-1-2, p1-1-0; III—tibia v1-2-0, p0-1-0, metatarsus v2-1-0, p0-1-0.

PALP. Retrolateral tibial apophysis conical with apex curved; cymbium with retrolateral projection more rounded; embolus short; ventral tegular process near the median apophysis and sclerotized; sperm duct in vertical position with secondary looping reaching the apex of the tegulum; median apophysis slender and curved apically ( Fig. 15C–E ).

ABDOMEN. Length 2.7, epigastric furrow 0.6 from tracheal spiracle, spiracle 1.0 from base of spinnerets.

Female (paratype, MACN-Ar 41788)

COLOR. Exemplar probably discolored. Coloration as in males of this species ( Fig. 15B ).

MEASUREMENTS. Total length 3.2, carapace length 2.4, width 1.3. Clypeus height 0.06. Eye diameters and interdistances: AME 0.08, ALE 0.1, PME 0.1, PLE 0.1; AME–AME 0.04, AME–ALE 0.04, PME– PME 0.16, PME–PLE 0.12, ALE–PLE 0.04. Chelicerae 1.1 long, with four promarginal teeth and five retromarginal denticles.

LEG MEASUREMENTS. I—femur 1.6 /patella 0.8/ tibia 1.4/ metatarsus 1.3/ tarsus 0.8 /total 5.9; II— 1.9/ 0.8/ 1.1 /1.15 / 0.6 /5.55; III—1.3/ 0.63 / 0.8/ 1.2/ 0.5/ 4.43; IV—1.9 / 0.8/ 1.5/ 2.1/ 0.65 / 6.95.

LEG SPINATION. I—tibia v2-2-0, metatarsus v2-0-0; II—tibia v1-1-0; III—tibia v1-2-2, p1-1-0, r1-1-0, metatarsus v2-1-2; IV—tibia v1-2-2, p1-1-1.

EPIGYNUM. Hood semicircular and sclerotized; short atrium; lateral lobes over copulatory ducts. Internally, copulatory ducts narrow; primary spermathecae large and oval; secondary spermathecae above the primary spermathecae and rounded; fertilization ducts long ( Fig. 15F–G ).

ABDOMEN. Length 3.2, epigastric furrow 0.7 from tracheal spiracle, spiracle 1.3 from base of spinnerets.

Distribution

Known only from Jujuy, Argentina ( Fig. 35 ).

Figures

Fig. 15. Tafana humahuaca sp. nov. (A, C–E =holotype, ♂, MACN-Ar 41787; B, F–G=paratype, ♀, MACN-Ar 41788). A. Habitus, dorsal view. B. Habitus, dorsal view. C. Left palp, ventral view. D. Left palp, retrolateral view. E. Left palp, dorsal view. F. Epigynum, ventral view. G. Vulva, dorsal view. Abbreviations: A= atrium; ABE= apophysis of base of the embolus; CD =copulatory ducts; CO =copulatory opening; E =embolus; FD =fertilization ducts; H =hood; LL= lateral lobes; RTA =retrolateral tibial apophysis; S1= primary spermathecae; S2 =secondary spermathecae; T =tegulum; VTP= ventral tegular process. Scale bars: A–B= 3.5 mm; C–G =0.25 mm.

Fig. 32. Female genitalia, digested. A. Arachosia praesignis (Keyserling, 1891) (Amaurobioidinae) (IBSP 87975). B. Xiruana gracilipes (Keyserling, 1891) (Anyphaeninae) (IBSP 166120). C. Aysha prospera Keyserling, 1891 (IBSP 19783). D. Anyphaena accentuata (Walckenaer, 1802) (MCN). E. Patrera fulvastra Simon, 1903 (MCN 24208). F. Tafana riveti Simon, 1903 (MCZ). G. Tafana straminea (L. Koch, 1866) (AMNH). H. Tafana quelchi (Pocock, 1895) (IBSP 32131). I. Tafana kunturmarqa sp. nov. (ICN-Ar). J. Tafana humahuaca sp. nov. (MACN-Ar 41788). K. Tafana pastaza sp. nov. (AMNH). L. Tafana nevada sp. nov. (AMNH). Abbreviations: CD =copulatory ducts; CO= copulatory opening; FD = fertilization ducts; H =hood; S1= primary spermathecae; S2 =secondary spermathecae. Asterisks to globose membranous extension of proximal copulatory ducts. Scale bars: A–B, D–I, K–L=0.25 mm; C=0.3 mm; J = 0.5 mm.

Fig. 35. Distribution map of species of Tafana.