Goeldia obscura
Creators: name: Almeida-Silva, Lina M.
name: Brescovit, Antonio D.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Titanoecidae
Goeldia
Goeldia obscura

description: Goeldia obscura (Keyserling, 1878)
(Figs 18, 25)
Titanoeca obscura Keyserling, 1878: 591 pl. 14, fig. 15 (holotype ♀ from Santa Fé de Bogotá (4°35’56”N 74°04’51”W), Colombia, deposited in NHM, examined).
Amaurobius obscurus: Petrunkevitch 1911: 105.
Goeldia funesta: Lehtinen 1967: 236 (Part).
Remarks. The description of a male presented by Leech (1972) for Goeldia obscura refers to the specimen described by Keyserling (1891) and it was erroneously interpreted as the male of G. obscura (Keyserling, 1878). Here we present the first description of the male of Goeldia obscura (Keyserling, 1878).
Additional material examined. COLOMBIA. Huila: San Agustín (1°52’45”N 76°16’06”W), 1♂, 24.III.1994, V. & B. Roth coll. (CAS 9025938); San Agustín, Archaeological site of San Agustín (1°55’N 76°14’W), 1♂, 9.IX.1980, C. Gold coll. (CAS 9025935); Cundinamarca: Mosquera, Laguna de la Herrera (4°42’N 74°18’W), 1♀, VII.1991, E. Flórez coll. (ICN-Ar 6067); Cachipay (4°43’51”N 74°26’15”W), Alto Tolú, elev. 1600 m, 1♀, 5.XII.1996, E. Floréz coll. (ICN-Ar 1611); Bogotá (4°35’56”N 74°04’51”W), elev. 2600 m, 3♀, 2 juv. 20.V.1979, C. Hernandez coll. (ICN-Ar 5349); Mosquera (4°42’28”N 74°13’58”W), Mondoñedo, elev. 2600 m, 4♀, 11 juv., 6.IV.2002, C. Niño, G. Hora, J. Martinez & A. Castañeda coll. (ICN-Ar 2082); 2♀, 7 juv., 23.III.2002, J. Martinez, C. Niño, G. Mura & A. Costañeda coll. (ICN-Ar 2083).
Diagnosis. Males of Goeldia obscura differ from other species by the short, thick, and distally constricted patellar apophysis (Fig. 18C); and by the tegular process distally narrowed and ventrally curved (Fig. 18A). Females are recognized by the wide median field of the epigynum not enclosing the copulatory openings (Fig. 18E); the copulatory ducts distally bent (Fig. 18F); the vertical spermathecae shorter than the copulatory ducts, and the horizontal spermathecae ventrally curved (Fig. 18F).
Description. Male (CAS 9025935): Coloration: carapace orange, palp brown and femora black, other leg segments yellowish brown. Total length 4.9. Carapace: length 2.25, width 1.65, height 0.68. Opisthosoma: length 2.25, width 2.2. Clypeus: height 0.16. Eye diameters and interdistances: AME 0.05; ALE 0.10; PME 0.08; PLE 0.06; AME–AME 0.11; AME–ALE 0.11; ALE–PLE 0.05; PME–PLE 0.2; PME–PME 0.13; AME–PME 0.13. Chelicerae paturon: length 0.10. Leg measurements: I: Femur 1.73/ patella 0.65/ tibia 1.68/ metatarsus 1.63/ tarsus 0.88/ total 6.55; II: 1.75/ 0.65/ 1.63/ 1.45/ 0.68/ 6.15; III: 1.50/ 0.63/ 1.38/ 1.23/ 0.68/ 5.40; IV: 1.70/ 0.68/ 1.80/ 1.45/ 0.63/ 6.25; Leg formula: 1423; Leg spination: femur I–II: p1ap; tibia II v0-0-1, p1ap; III v1-0-1 or v1-0-2, p1ap, r1ap; IV v1-0-1 or v0-1-2, p1ap, r1ap; metatarsus I v2-2- 1m, p1ap, r1ap; II v2-2-1map, r1ap, p2ap; III v2-2- 1m, p1-1-1ap, r0-0-1ap, d1-0-1rap or d0-0-1p; IV v2-2-2- 1m, p0-2-2ap, r1ap, d2ap. Patellar apophysis dorsally projected (Fig. 18B–D). MLT with apex membranous (Fig. 18C). Spermatic duct bending at 12 o’clock. Pars pendula thickening at the tip of the embolus (Fig. 18D).
Female (CAS 9025998). Coloration: carapace brown with the edge darker; chelicerae, labium sternum and endites brown; coxae and femora brown; other leg segments yellowish brown; opisthosoma pale brown. Total length: 5.40. Carapace: length 2.1, width 1.6, height 1.03. Opisthosoma: length 3.5, width 2.2. Clypeus: height 0.18. Eye diameters and interdistances: AME 0.07; ALE 0.11; PME 0.10; PLE 0.10; AME–AME 0.10; AME–ALE 0.13; ALE–PLE 0.06; PME–PLE 0.23; PME–PME 0.15; AME–PME 0.11. Chelicerae paturon: length 1.06. Leg measurements: I: femur 1.56/ patella 0.59/ tibia 1.53/ metatarsus 1.22/ tarsus 0.72/ total 5.63; II: 1.47/ 0.69/ 1.34/ 1.09/ 0.69/ 5.28; III: 1.34/ 0.66/ 0.97/ 0.94/ 0.50/ 4.41; IV: 1.69/ 0.75/ 1.47/ 1.09/ 0.53/ 5.53. Leg formula: 1423. Leg spination: femur I p1ap; metatarsus I–III v1map, p1ap, r1ap; IV v0-1-1map, r1ap, p1ap. Median field of epigynum wider than long but not covering the copulatory openings (Fig. 18E). Fertilization ducts apart from each other twice its length (Fig. 18E–F).
Variation. Length (10 ♀): total 4.82–6.15; carapace 1.8–2.6; femur I 1.48–1.70.
Distribution. Colombia (Fig. 25).
description: Published as part of Almeida-Silva, Lina M. & Brescovit, Antonio D., 2024, Unraveling the mysteries of Goeldia Keyserling, 1891: revision, description of seven new species and first record from USA (Araneae: Titanoecidae), pp. 151-193 in Zootaxa 5428 (2) on pages 180-181, DOI: 10.11646/zootaxa.5428.2.1, http://zenodo.org/record/10847364