Patrera dimar Martínez & Brescovit & Villarreal & Oliveira 2021, new species

Patrera dimar new species

Figures 8A–G; 31

Type material. Male holotype from Tumaco (1°47′2.85″N; 78°48′13.74″W), 0-30m Nariño, Colombia, 6– 19.IX.2015, Estudiantes Taxonomía Animal Universidad Nacional de Colombia leg. (ICN-Ar-10634). Paratypes: one female same data as holotype (ICN-Ar-10635); one male and two females from the entrance of the Ñambí Natural Reserve, (1°17′6.25″N; 78°4′22.98″W), 1443m, Barbacoas, Vereda Altaquer, Nariño, Colombia, X.2016, Estudiantes Taxonomía Animal Universidad Nacional de Colombia leg. (MCTP).

Other material examined. COLOMBIA, Nariño: Tumaco, (1°47′42.85″N; 78°48′13.74″W), 0-30 m, ♁1, ♀ 1, 6–19.IX.2015, Estudiantes Taxonomía Animal Universidad Nacional de Colombia leg. (ICN-Ar-10606).

Etymology. The epithet is a noun in apposition refering to the institution Direccion de Investigaciones Marinas (DIMAR), for its support to LAM during the sampling in Nariño department.

Diagnosis. Males of Patrera dimar n. sp., resemble those of P. ruber by having a cymbial basal projection (Fig. 8E; Brescovit 1997: 147, figs 53–54), but can be distinguished by the presence of a very wide retrolateral tibial apophysis (thinner in P. ruber), a small projection on the base of the embolus (larger and denticulate in P. ruber), and other on the median third (absent in P. ruber), and absent of denticles on external edge of the embolus (Fig. 8 C–E). Females resemble those of P. ruber and P. perafani n. sp. by the short and wide lateral borders, short copulatory ducts, and large spermathecae (Fig. 9 F–G; Brescovit 1997: 147, figs 55–56), but can be distinguished by their larger, thin hood (wider in P. ruber and P. perafani), and the thin and short copulatory ducts (wide and longer in P. ruber) (Fig. 8 F–G).

Description. Male (Holotype, ICN-Ar-10634). Carapace yellow with darkest cephalic region (Fig. 8A). Chelicerae dark brown. Labium brown and endites dark yellow. Sternum yellow. Legs brown, metatarsus and tarsus darkest. Abdomen yellow with two dark green stripes united in the posterior region; ventrally yellow (Fig. 8A). Total length 6.16, carapace length 2.93, width 2.46, high 0.81. Clypeus height 0.08. Eye diameters and interdistances: AME 0.11, ALE 0.19, PME 0.17, PLE 0.2; AME–AME 0.26, AME–ALE 0.32, PME–PME 0.45, PME–PLE 0.39, ALE–PLE 0.37. Chelicerae 1.1 long, four promarginal teeth, five retromarginal teeth. Leg measurements: Leg I—femur 2.78/ patella 1.18/ tibia 2.71/ metatarsus 2.83/ tarsus 1.37/ total 10.87; II—2.6/ 1.11/ 2.72/ 2.56/ 1.35/ 10.34; III—2.07/ 1.11/ 1.71/ 2.19/ 0.88/ 7.96; IV—2.99/ 1.17/ 2.84/ 3.40/ 1.15/ 11.55. Leg spination: I—metatarsus v2-0-2, r1-1-2; II—metatarsus v2-0-2; III—tibia d1-0-0, p1-1-1, r0-1-1, metatarsus p2-1-2, r1-1-2; IV—tibia d1- 0-0, metatarsus p1-1-2, r1-2-2. Abdomen: length 3.14, epigastric furrow 0.73 from tracheal spiracle, spiracle 1.26 from base of spinnerets. Palp: retrolateral tibial apophysis short and very wide; cymbium longer than tibia, with a conical dorsal projection on the base; subtegulum longer than wide, with apically subrounded distal projection; tegulum longer than wide; median apophysis laminar, long with apex strongly curved and medially situated; embolus long, apically filiform and basally inserted on the tegulum, with very wide and projected base, provided with a small projection (Fig. 8 C–E).

Female (Paratype, ICN-Ar-10635). Carapace brownish, with daker cephalic region and lateral margins (Fig. 8B). Chelicerae dark brown. Labium and endites brown. Sternum yellow. Legs yellow with darkest metatarsus and tarsus. Abdomen, as in the male. Spinnerets yellow (Fig. 8B). Total length 7.26, carapace length 3.17, width 2.46, high 1.21. Clypeus height 0.13. Eye diameters and interdistances: AME 0.12, ALE 0.17, PME 0.17, PLE 0.22; AME–AME 0.31, AME–ALE 0.36, PME–PME 0.48, PME–PLE 0.51, ALE–PLE 0.46. Chelicerae 1.28 long, five promarginal teeth, five retromarginal teeth. Leg measurements: Leg I—femur 2.77/ patella 1.3/ tibia 2.88/ metatarsus 2.14/ tarsus 1.18/ total 10.27; II—2.42/ 0.97/ 2.56/ 2.17/ 1.11/ 9.23; III—2.13/ 1.04/ 1.59/ 2.16/ 0.89/ 7.81; IV—3.03/ 1.26/ 2.75/ 3.4/ 1.08/ 11.52. Leg spination: I—tibia p1-0-0, r0, metatarsus v2-0-0, p0, r0; II—tibia r1-0- 0, metatarsus v2-0-0, p0, r0; III—tibia d1-0-0, p1-1-1, r1-1-1, metatarsus v2-2-2, p1-2-2, r1-1-2; IV—tibia d1-0-0, metatarsus p1-2-2, r1-1-2. Abdomen: length 4.01, epigastric furrow 1.14 from tracheal spiracle, spiracle 1.57 from base of spinnerets. Epigynum: hood triangular, thin and elongated anteriorly; lateral borders sclerotized, parallel, short, wide and apically rounded; atrial cavities short and narrow; internally with copulatory ducts long and thin; seminal receptacles small and posteriorly situated on the spermathecae; spermathecae large, rounded and posteromedially positioned; fertilization ducts almost as long as spermathecae (Fig. 8 F–G).

Variation. Males (n=3): total length: 6.14–7.01; carapace length: 2.89–3.11; femur I length 2.78–2.94. Females (n=3): total length: 6.91–7.19; carapace length: 3.07–3.21; femur I length 2.77–2.93.

Distribution. Only known from Nariño department (Fig. 3).