Tafana oliviae, 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: 52-54

publication ID

https://doi.org/10.5852/ejt.2021.742.1291

publication LSID

lsid:zoobank.org:pub:23424EC3-8440-4C72-AD9E-C1EC3087F7CA

DOI

http://doi.org/10.5281/zenodo.4658632

persistent identifier

http://treatment.plazi.org/id/A7E716C9-A0F8-4F4E-A451-E6D94A3E82CD

taxon LSID

lsid:zoobank.org:act:A7E716C9-A0F8-4F4E-A451-E6D94A3E82CD

treatment provided by

Plazi

scientific name

Tafana oliviae
status

sp. nov.

Tafana oliviae   sp. nov.

urn:lsid:zoobank.org:act:A7E716C9-A0F8-4F4E-A451-E6D94A3E82CD

Figs 29 View Fig , 33G View Fig , 35 View Fig

Diagnosis

Males of Tafana oliviae   sp. nov. differ from those of the other species in the silhavyi   group by having the apophysis at the base of the embolus finger-shaped, retrolateral tibial apophysis bifid with anterior branch short and flattened, posterior branch triangular and median tibial apophysis bifid in dorsal position on the tibia ( Fig. 29C–E View Fig ). Females differ by having the epigynal plate with lateral lobes extremely projected to the sides and by having the small primary spermathecae ( Figs 29F–G View Fig , 33G View Fig ).

Etymology

The specific name is a matronymic in memory of Olivia de Moura Oliveira, the first author’s mother.

Material examined

Holotype ARGENTINA • 1 ♂; Misiones, Santa María; [27°56′04″ S, 55°24′25″ W]; Nov–Dec. 1913; M.J. Viana leg.; MACN-Ar 3565. GoogleMaps  

Paratype ARGENTINA • 1 ♀; Misiones, Cataratas del Iguazú , near the Puerto Iguazú; [25°41′43″ S, 54°26′12″ W]; Nov. 1970; M.E. Galiano leg.; MCZ GoogleMaps   .

Remark

The male and female were matched by their close localities in Misiones, Argentina. Despite the different colorations of the male and female, the morphology of the genitalia suggests that both exemplars belong to Tafana oliviae   sp. nov.

Description

Male (holotype, MACN-Ar 3565)

COLOR. Exemplar probably discolored. Carapace orange, darker in cephalic region ( Fig. 29A View Fig ). Labium, sternum and endites yellow. Chelicerae reddish. Legs I–IV yellow. Abdomen yellow with lateral dark spots and a yellow spot in the middle ( Fig. 29A View Fig ).

MEASUREMENTS. Total length 3.9, carapace length 1.7, width 1.4. Clypeus height 0.04. Eye diameters and interdistances: AME 0.06, ALE 0.08, PME 0.08, PLE 0.06; AME–AME 0.02, AME–ALE 0.04, PME–PME 0.1, PME–PLE 0.06, ALE–PLE 0.02. Chelicerae 1.0 long, with four promarginal teeth and six retromarginal denticles.

LEG MEASUREMENTS. I—femur 2.1 /patella 0.7/ tibia 2.5/ metatarsus 2.2/ tarsus 1.1 /total 8.6; II— 1.6/ 0.5/ 1.7 /1.5 / 0.7/ 6.0; III—1.3 / 0.6/ 0.9/ 1.2/ 0.4/ 4.4; IV—2.0 / 0.6/ 1.3/ 2.1 /0.6 / 6.6.

LEG SPINATION. I—tibia v2-2-0, metatarsus v2-0-1; II—tibia v1-2-0; III—tibia v1-1-0, p1-1-0, r1-1-0, metatarsus v2-1-2, r1-0-1; IV—tibia v0-1-1, p1-1-1, r1-1-0.

PALP. Retrolateral tibial apophysis bifid; cymbium without retrolateral projection; embolus short and bifurcate at the apex; median apophysis long and curved apically; sperm duct with secondary looping reaching the apex of the tegulum ( Fig. 29C–E View Fig ).

ABDOMEN. Length 2.1, epigastric furrow 0.6 from tracheal spiracle, spiracle 1.0 from base of spinnerets.

Female (paratype, MCZ)

COLOR. Exemplar probably discolored. Coloration as in males of this species except for legs yellow, darker at tarsi. Abdomen yellow ( Fig. 29B View Fig ).

MEASUREMENTS. Total length 5.7, carapace length 2.7, width 1.8. Clypeus height 0.04. Eye diameters and interdistances: AME 0.08, ALE 0.08, PME 0.1, PLE 0.1; AME–AME 0.08, AME–ALE 0.08, PME– PME 0.18, PME–PLE 0.16, ALE–PLE 0.04. Chelicerae 1.1 long, with four promarginal teeth and four retromarginal denticles.

LEG MEASUREMENTS. I—femur 2.0 /patella 0.9/ tibia 1.8/ metatarsus 1.4/ tarsus 0.8 /total 6.9; II— 1.9/ 0.9/ 1.1 /1.3 / 0.63 /5.83; III—1.5/ 0.72 / 1.1/ 1.23 / 0.5/ 5.05; IV—2.25/ 0.8/ 1.72 / 2.1/ 0.7/ 7.57.

LEG SPINATION. I—tibia v2-2-0, metatarsus v2-0-0; II—tibia v2-2-0; III—tibia v1-1-2, p0-0-1, r0-0-1, metatarsus v2-1-2; IV—tibia v1-1-2, p1-1-1.

EPIGYNUM. Hood semicircular and thick; lateral lobes curved in anterior region; wide atrium; epigynal plate covered by cuticle in the posterior region. Internally, copulatory ducts long and narrow; secondary spermathecae in the anterior region of the copulatory ducts; primary spermathecae small and fertilization ducts longer than primary spermathecae ( Figs 29F–G View Fig , 33G View Fig ).

ABDOMEN. Length 2.9, epigastric furrow 0.7 from tracheal spiracle, spiracle 1.4 from base of spinnerets.

Distribution

Known only from Misiones, Argentina ( Fig. 35 View Fig ).

MCZ

Museum of Comparative Zoology

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Anyphaenidae

Genus

Tafana