Thaloe ebano, Brescovit & Oliveira, 2019

Brescovit, Antonio D. & Oliveira, Luiz Fernando M., 2019, Three new species of Thaloe Brescovit (Araneae: Anyphaenidae: Anyphaeninae), with descriptions of the first known females of the genus, Zootaxa 4624 (2), pp. 256-266 : 262

Thaloe ebano new species

Figures 5 A–H; 6 A–F; 7

Type material. Male holotype and female paratype from Reserva Científica Ébano Verde (19°01’56.8”N; 70°32’30.9”W), 1029 m, La Vega, Dominican Republic, 16−17/IV/2015, A. Sánchez & J. Cabra col., deposited in IBSP 214254 and 214255, respectively.

Other material examined. DOMINICAN REPUBLIC. Hato Mayor: Forest between Hato Mayor and Sabana de la Mar (18°46’00”N; 69°16’00”W), 1♂, VII.1935, W.G. Hassler col. ( AMNH); La Romana, near La Romana (18°26’00”N; 68°58’00”W), 1♀, 31.VII.1935, W.G. Hassler col. ( AMNH); La Vega: Reserva Científica Ébano Verde (19°1’56.8”N; 70°32’30.9”W), 1029m, 1♂, 16-17.IV.2015 ( IBSP 214256 ) .

Etymology. The noun in apposition refers to the type locality.

Diagnosis. Males of T. ebano n. sp. differ from other species of the genus by the presence of two short patellar apophyses in the male palp (Figs. 5D–F, 6D, F). Females resemble those of T. maricao n. sp. by the large and suboval atrium in the epigynum but can be distinguished by the sharply curved spermathecae (Fig. 5G, H).

Description. Male (Holotype, IBSP 214254). Carapace and chelicerae orange. Labium and endites yellow. Sternum cream. Legs yellow with sparse gray bands. Abdomen dorsally cream with longitudinal gray band, ventrally white (Fig. 5A). Total length 4.7, carapace length 2.2, width 1.7. Clypeus height 0.08. Eye diameters and interdistances: AME 0.08, ALE 0.12, PME 0.14, PLE 0.14; AME–AME 0.06, AME–ALE 0.06, PME–PME 0.10, PME–PLE 0.10, ALE–PLE 0.06. Chelicerae 1.5 long, with 4 promarginal teeth and 8 retromarginal denticles ( Fig. 6A ). Leg measurements: Leg I—femur 3.1/ patella 1/ tibia 3.6/ metatarsus 3.2/ tarsus 1.55/ total 12.45; II—2.8/ 0.9/ 2.4/ 2.7/ 1/ 9.8; III—1.7/ 0.7/ 1.6/ 1.7/ 0.55/ 6.25; IV—2.7/ 1.1/ 2.4/ 2.7/ 0.8/ 9.7. Leg spination: I-II—tibia v2-2 - 0, p1-1-1, r1-1-1, metatarsus v2-2 -0, p1-1-1, r1-1-1; III—tibia v2-2 -0, p1-1-0, r1-1-0, metatarsus v2-2 -2, p1-1-1, r1-1-1; IV—tibia v2-2 -2, p1-1-0, r1-1-0, metatarsus v2-2 -2, p1-1-1, r1-1-1. Palp: ventral patellar apophysis absent, retrolateral patellar apophysis short and triangular, dorsal patellar apophysis triangular, retrolateral tibial apophysis very short and basal retrolateral apophysis rounded, median apophysis with sharp distal area and narrowed in the base; ventral tegular process short, embolus filiform (Figs. 5C–F, 6B–F). Abdomen: length 2.3, epigastric furrow 0.5 from tracheal spiracle, spiracle 0.8 from base of spinnerets.

Figures

FIGURE 6A–F. Thaloe ebano sp. nov. Male (IBSP 214256): A chelicerae, ventral view; B left palp, ventral view; C same, retrolateral view; D male palpal patella and tibia, retrolateral view; E male palpal, retrolateral tibial apophysis, retrolateral view; F male palpal patellar apophysis, retrolateral view. Abbreviations: E, embolus; MA, median apophysis; RTA, retrolateral tibial apophysis; T, tegulum, VTP, ventral tegular process. Scale bars: A, B 0.2mm; C, D, F 0.1mm; E 0.03mm.