Masteria tayrona Passanha & Brescovit 2018, n. sp.
Creators: name: Passanha, Victor
name: Brescovit, Antonio D.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Dipluridae
Masteria
Masteria tayrona

description: Masteria tayrona n. sp.
(Figs 22, 30E, 32)
Types. COLOMBIA. ♂ holotype, ♀ paratype, Sierra Nevada de Santa Marta (10°34’0”N; 73°36’0”W), San Sebastian de Rabago, 01-14.IV.1968, B. Malkin leg. deposited in AMNH; ♂ paratype (same locality from holotype) deposited in IBSP 167162; ♀ paratype (same locality from holotype) deposited in IBSP 167163.
Additional material examined. COLOMBIA, San Sebastian de Rabago: Sierra Nevada de Santa Marta (10°34’0N; 73°36’0”W), 1♂, 7♀, 01-14.IV.1968, B. Malkin leg. (AMNH).
Etymology. In apposition to the Tayrona tribe, native from Colombia, who lived along the whole extension of Sierra Nevada de Santa Marta before Spanish colonization.
Diagnosis. Males of Masteria tayrona n. sp. differ from those of other species in the flattened embolus with internal median keel, and 6–7 rows of strong and short retrolateral spines on palpal tibia (Fig. 22B–C). Females resemble those of Masteria yacambu n. sp. in the spermathecae with at least four lobes, but differ in the ectal lobe elongated and with a small space between the lobes (Fig. 22F). Males differ from those of the sympatric M. colombiensis by the twisted bulb.
Description. Male (Colombia, Sierra Nevada de Santa Marta, San Sebastian de Rabago, AMNH). Color: Carapace in dorsal view and legs orange, carapace in ventral view and abdomen light brown. Total length 3.67. Carapace 1.79 long, 1.41 wide. Abdomen 1.88 long. Fovea 0.08. Clypeus 0.02. Ocular tubercle 0.22 long, 0.29 wide. Eyes: eight, posterior row recurved (Fig. 22A). AME, 0.03, ALE 0.13, PME 0.07, PLE 0.09. Basal segment of chelicerae with 11 prolateral teeth, and 12 smaller mesobasal teeth. Labium 0.19 long, 0.32 wide. Sternum 0.82 wide, 1.00 long. Palp: femur 0.91/ patella 0.60/ tibia 0.91/ tarsus 0.44/ total 2.86. Legs I: femur 1.47/ patella 0.91/ tibia 1.38/ metatarsus 1.07/ tarsus 0.88/ total 5.71; II: femur 1.13/ patella 0.63/ tibia 0.91/ metatarsus 0.91/ tarsus 0.63/ total 4.21; III: 1.16/ 0.63/ 0.94/ 1.04/ 0.69/ 4.46; IV: 1.57/ 0.79/ 1.32/ 1.35/ 0.82/ 5.85; Leg formula 4132; Spination: palp: femur p1, patella v1-3 ap, p1, r1, tibia p1; Legs I: femur p1, patella v1-4 ap, p1, tibia d2b-1-1-1-1-1- 1, v1-1, p1, metatarsus v1-1 -1; II: femur p1, r1, patella v1-3 ap, p1-1, tibia d2b-1-1-1-1-1-1, v1-1 -3ap, p1, metatarsus v1-1 -2ap, p1; III: femur p1, r1, patella v1-3 ap, p1-1, r1, tibia d1b-1-1, v1-1 -1-1-3ap, p1-1, r1-1, metatarsus d1-2ap, v2-2 -3, p1-1, r1b; IV: femur p1, r1, patella v1-3 ap, p1-1, r1, tibia d1-1-1, v1-1 -2-3ap, p1-1, r2- 1-1, metatarsus d1-2ap, v3-3 -3ap, p1-1, r1-1. Tibia I: P1 a strong and projected spur with dentate apex, P2 a strong spine with base slightly projected below P1 and P3, and P3 two strong spines sharing same projected base. Metatarsus I with flattened basal spine and basal depression associated with prolateral processes of tibia I (Figs 4C, Fig. 22D ̄E, 30E). Palpal tibia twice length of cymbium with ventral apical depression, (Fig. 22B). Cymbium as long as wide with 4 apical spines. Palpal bulb piriform with globose tegulum, embolus short, with two-thirds length of tegulum and spatulated tip (Fig. 22B ̄C). PLS: basal, medial and apical, 0.60, 0.50, 0.57 long.
Female (Paratype). Color: Carapace in dorsal view orange, carapace in ventral view and legs yellowish brown and abdomen light brown. Total length 5.51. Carapace 2.38 long, 1.72 wide. Abdomen 3.13 long. Fovea 0.10. Clypeus 0.04. Ocular tubercle 0.25 long, 0.38 wide. Eyes: 8, posterior row recurved. AME 0.04, ALE 0.14, PME 0.08, PLE 0.14. Basal segment of chelicerae with 11 prolateral teeth, and 15̄18 smaller mesobasal teeth. Labium 0.25 long, 0.47 wide. Sternum 1.07 wide, 1.29 long. Palp: femur 1.16/ patella 0.66/ tibia 0.94/ tarsus 0.88/ total 3.64; Legs I: femur 1.75/ patella 1.00/ tibia 1.41/ metatarsus 1.19/ tarsus 0.79/ total 6.14; II: 1.47/ 0.85/ 1.04/ 1.07/ 0.79/ 5.22; III: 1.44/ 0.79/ 1.00/ 1.13/ 0.75/ 5.11; IV: 1.97/ 0.94/ 1.54/ 1.57/ 0.85/ 6.87; Leg formula 4123. Spination: palp: femur p1, patella v1-3 ap, p1, tibia v1-3 ap, tarsus v1 b; Legs I: femur p1, patella v1-3 ap, p1, tibia v1-1 -3ap, p1, metatarsus v1-1 -1; II: femur p1, patella v1-3 ap, p1, tibia v1-1 -3ap, p1, metatarsus v1-1 -1; III: femur p1, r1, patella v1-3 ap, p1-1, r1, tibia d2b-1, v1-1 -3ap, p1-1, r1, metatarsus d1-2, v2-3 -3ap, p1; IV: femur p1, r1, patella v1-3 ap, p1, r1, tibia d1, v1-1 -1-3ap, p1-1, r2-1-1, metatarsus d1-2, v2-2 -3ap, p1-1-1, r1-1. Palpal claw with 13 teeth. Spermathecae a dense glandular region, with 4̄5 lobes, ectal lobes with longer ducts and globose apex, most ental lobe short and globose (Fig. 22F). PLS: basal, medial and apical, 0.63, 0.63, 0.60 long.
Variation. 2 males: total length 3.66–3.67. 4 females: total length 3.82–5.50.
Distribution. Colombia, San Sebastian de Rabago (Fig. 32).
description: Published as part of Passanha, Victor & Brescovit, Antonio D., 2018, On the Neotropical spider Subfamily Masteriinae (Araneae, Dipluridae), pp. 1-73 in Zootaxa 4463 (1) on page 40, DOI: 10.5281/zenodo.1441911