Masteria barona ( Chickering, 1966 )

Passanha, Victor & Brescovit, Antonio D., 2018, On the Neotropical spider Subfamily Masteriinae (Araneae, Dipluridae), Zootaxa 4463 (1), pp. 1-73: 17-19

publication ID

http://doi.org/ 10.5281/zenodo.1441911

publication LSID

lsid:zoobank.org:pub:20E7F0F5-7592-47CE-B67F-36DE0124E76F

persistent identifier

http://treatment.plazi.org/id/03D95431-A220-8E71-FF36-4889FCBE79B1

treatment provided by

Plazi

scientific name

Masteria barona ( Chickering, 1966 )
status

 

Masteria barona ( Chickering, 1966) 

( Figs 6BView FIGURE 6, 9View FIGURE 9, 29BView FIGURE 29, 33View FIGURE 33)

Accola barona Chickering, 1966: 162  , figs 9–11.

Masteria barona: Brignoli, 1983: 126  .

Type. TRINIDAD AND TOBAGO. ♂ holotype, William Beebe Tropical Research Station (10°41'1"N; 61°17'W), Arima Valley , Arima, Saint George County, Trinidad and Tobago, 23.IV.1964, A. M. Chickering leg., deposited in MCZ, examined.GoogleMaps 

Additional material examined: TRINIDAD AND TOBAGO  . Saint George County  , Arima, Las Lapas Road (10°37’0”N; 61°16’0”W), 23.VII.1979, 2♂, L.N. Sorkin leg. ( AMNH)GoogleMaps  ; Andrew’s Trace (10°37’0”N; 61°16’0”W), 16.VII.1979, 2♀, L.N. Sorkin leg. ( AMNH)GoogleMaps  ; Arima Valley (10°37’0”N; 61°16’0”W), 10–22. II.1964, 1♂, 4♀, P. Wygodzinsky, D. Rosen leg. ( AMNH)GoogleMaps  .

Diagnosis. Males of Masteria barona  resemble those of M. petrunkevitchi  and M. soucouyant  n. sp. in the elongated shape of the palpal bulb. They differ from those of M. petrunkevitchi  in the presence of only six eyes ( Fig. 9AView FIGURE 9), and from M. soucouyant  n. sp. in the absence of spines on the retrolateral palpal tibia. Females differ from those of the other species in the bilobed spermathecae, with similar height and not sinuous ( Fig. 9F –GView FIGURE 9).

Description

Male ( Trinidad, Saint George County, Arima, Las Lapas road, AMNH). Color: Carapace in dorsal and ventral views and legs yellowish brown, whitish abdomen. Total length 4.56. Carapace 2.04 long, 1.48 wide. Abdomen 2.52 long. Fovea 0.09. Clypeus 0.03. Ocular tubercle 0.12 long, 0.24 wide. Eyes: six, posterior row slightly recurved ( Fig. 9AView FIGURE 9). AME absent, ALE 0.11, PME 0.07, PLE 0.09. Basal segment of chelicerae with 11 prolateral teeth, and 11 smaller mesobasal teeth. Labium 0.19 long, 0.32 wide. Sternum 0.96 wide, 0.76 long. Palp: femur 1.14/ patella 0.60/ tibia 1.08/ tarsus 0.30/ total 3.12; Legs I: femur 1.74/ patella 0.72/ tibia 1.56/ metatarsus 1.32/ tarsus 0.84/ total 6.18; II: 1.74/ 0.72/ 1.02/ 1.14/ 0.84/ 5.46; III: 1.56/ 0.72/ 1.08/ 1.20/ 0.84/ 5.40; IV: 1.98/ 0.90/ 1.80/ 1.68/ 0.96/ 7.32; Leg formula 4123; Spination: Legs I: tibia v2, p1, metatarsus v1-1 ap; II: patella v1 ap, tibia v1-1 -1ap, p1, metatarsus v1-1 -1, p1; III: patella v1 ap, r1, tibia v1-1 - 2ap, p1-1, r1-1-1, metatarsus d1, v2-2 -1, p1-1-1, r1-1-1; IV: patella v2 ap, r1, tibia d1-1, v1-1 -1-1-1-2ap, p1-1, r1-1-1, metatarsus d1-1, v2-2 -3ap, p1-1, r1-1. Tibia I: P3 more apical with two strong apical spines with projected base, P2 a robust spine with normal base just below P3, and a rounded apical spur, P1 ( Figs 9DView FIGURE 9, 29BView FIGURE 29). Palpal tibia three times length of cymbium. Cymbium as wide as long, with five apical spines. Palpal bulb with short tegulum, embolus twice length tegulum, with slight median curvature and narrowed distally ( Fig. 9B, C, EView FIGURE 9). PLS: basal, medial and apical segments 0.62, 0.57, 0.52 long.

Female ( Trinidad, Saint George County, Arima, Andrew’s Trace, AMNH). Color: Carapace in dorsal and ventral views yellowish brown, legs light brown and whitish abdomen. Total length, 3.35. Carapace 1.60 long, 1.33 wide. Abdomen 1.75 long. Fovea 0.11. Clypeus 0.04. Ocular tubercle 0.20 long, 0.28 wide. Eyes: six, posterior row slightly recurved. AME absent, ALE 0.12, PME 0.07, PLE 0.11. Basal segment of chelicerae with 11 prolateral teeth, and 10 smaller mesobasal teeth. Labium 0.26 long, 0.28 wide. Sternum 0.76 wide, 0.86 long. Palp: femur 0.90/ patella 0.46/ tibia 0.70/ tarsus 0.68/ total 2.74; Legs I: femur 1.20/ patella 0.62/ tibia 1.02/ metatarsus 0.80/ tarsus 0.62/ total 4.26; II: 1.02/ 0.52/ 0.80/ 0.72/ 0.50/ 3.56; III: 1.10/ 0.57/ 0.87/ 0.90/ 0.57/ 4.01; IV: 1.42/ 0.70/ 1.30/ 1.12/ 0.75/ 5.26; Leg formula 4132; Spination: Palp: tarsus v1 b; Legs I: patella v1, tibia v1-1 -3ap, p1, r1, metatarsus v1-1 ap; II: patella v1, tibia v1-1 -3ap, p1, metatarsus v1 ap, p1; III: femur r1, patella p1, r1-1, tibia d1, v1-1 -1-2ap, p1-1-1, r1-1, metatarsus d1, v1-1 -3ap, p1, r1; IV: patella v1-1, p1, tibia d1, v1-1 -3ap, p1-1-1-1, r1-1, metatarsus d1, v1-1 -3ap, p1-1, r1-1. Palpal claw with 16 teeth. Genitalia with two bilobed spermathecae, each pair over a glandular region slightly elevated, external lobe elongated with globose apex, ental lobe high and uniform ( Fig. 9F –GView FIGURE 9). PLS: basal, medial and apical 0.60, 0.45, 0.55 long.

Variation. 2 males: total length 4.56–4.62. 6 females: total length 2.84–3.72.

Distribution. North of Trinidad and Tobago ( Fig. 33View FIGURE 33).

MCZ

Museum of Comparative Zoology

AMNH

American Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Dipluridae

Genus

Masteria

Loc

Masteria barona ( Chickering, 1966 )

Passanha, Victor & Brescovit, Antonio D. 2018
2018
Loc

Accola barona

Chickering, 1966 : 162