Citharoceps cruzana (Chamberlin & Ivie, 1935) Chamberlin & Ivie, 1935

Giroti, Andre Marsola & Brescovit, Antonio Domingos, 2015, Revalidation of the spider genus Citharoceps Chamberlin, 1924 (Araneae, Segestriidae), ZooKeys 495, pp. 1-19 : 5-10

Taxon classification Animalia Araneae Segestriidae

Citharoceps cruzana (Chamberlin & Ivie, 1935) comb. n. Figs 4G, 7, 8, 9C

Segestria cruzana Chamberlin & Ivie, 1935: 7 (Immature holotype from Santa Cruz Island (34°00'N; 119°45'W) (DMS), Santa Barbara County, California, USA, III–IV.1913, R. V. Chamberlin leg., deposited in AMNH, examined). - World Spider Catalog 2015.

Citharoceps californica Chamberlin & Ivie, 1935: 8, pl. 5, figs 32-33 (Immature holotype and four female paratypes from Laguna Beach (33°31'N; 117°46'W) (DMS), California, USA, following Beatty (1970: 478), should be deposited in AMNH, not located, according to E. Sorkin, in letter). - Beatty 1970: 478 - NEW SYNONYMY.

Additional material examined.

UNITED STATES OF AMERICA. California:Monterey County: Greenfield, Arroyo Seco Camping, talus area at The Lakes (36°14'N; 121°29'W) (DMS), 1♀, 22.II.2002, D. & S. Ubick leg. (CDU); Greenfield, Arroyo Seco Camping, Indians Road, el. 1126' (36°13.9'N; 121°29.5'W) (DMS), 1♂ 2imm., 18.VI - 24.X.2004, D. & S. Ubick leg. (CDU); Coast Ridge Trail [36°08'26.32"N; 121°33'10.03"W] (DMS), 0.8 mi SE Nacimiento Rd., el. 3000', 1♀ 2imm., 1.VI.1991, D. Ubick leg. (CDU); San Luis Obispo County: Cayucos [35°26'18"N; 120°53'37"W] (DMS), 300', 1♀, 15.XI.1937, O. Bryant leg. (CAS 9039527); Santa Barbara County: gully SW of U. C. Field Station, 80-90m, Santa Cruz Island [33°59'59"N; 119°45'42"W] (DMS), 1♂ 1imm., 22.IV.1994, D. H. Kavanaugh leg. (CAS 9055018; 9046542).

Diagnosis.

Males of Citharoceps cruzana differ from those of Citharoceps fidicina by the presence of a relatively longer and slender embolus (Fig. 8 A–B), and a slightly prolaterally bent metatarsus I (Fig. 7 C–E). Females differ from Citharoceps fidicina by the darker coloration, and anterior receptaculum with both dorsal and ventral lobes with similar length, the ventral lobe not expanded (Figs 4G, 8 C–D).

Description.

Male (CAS 9046542). Total length 8.4; carapace 4.0 long, 2.76 wide. Palps light orange (Fig. 8 A–B). Legs: robust, with short setae, and spines with different sizes (Fig. 7 C–E). Leg formula: II-I-III-IV. Leg measurements: I, femur 3.2, patella 1.28, tibia 2.68, metatarsus 3.04, tarsus 1.04, total 11.24; II, 3.2, 1.24, 2.96, 3.12, 1.04, 11.56; III, 2.72, 1.16, 2.12, 2.36, 0.88, 9.24; IV, 3.16, 1.32, 2.6, 2.6, 0,88, 10.56. Spination: I, femur d0-0-0-0-1-0/1-2-0, p0-0-0-0-0-2-0-0; tibia p0/1- 1 -0-1-0-1-0, vp1-0-1-0-1-0-1, v1-1-0-1-0-0-0, vr1-1-0-1-0-1-0-1, r2-1-0-1-1-0-1-0; metatarsus vp0-1-1-1-0/1-1-1, v0-0-1-0-0-0-0, vr0-1-0-1-1-0-1-2, r0-1-0-0-0-0-0 (Fig. 7 C–E); II, femur d1-0-1-0-1-1-2-0, p0-0-0-0-0-0-1-0; tibia p0/1-1-0-1-0-1-0, vp0-1-0-1-0-1-0-1, v1/0-0-1-0-0-1-0-0, vr1-1-0-1-1-1-1, r1-1-0-1-1/0-1-1; metatarsus vp0-1-1-1-0-1-1, v0-1/0-1-0-0-0-0, vr0-1-1-0-1-0-1/0-2, r0-1-0-0-0-0-0-0; IV, femur d1-1-0-1-0-1-0-1-0-0, r0-0-0-0-0-0-0-0-1-0; tibia vp0/1-1-0-0-1-0-0, vr0-0-0-0-0-1/0-1; metatarsus vp0-0/1-1-0-0-1-0-1, metatarsal comb with 6 spines.

Female (Coast Ridge Trail, CDU). Total length: 11.92; carapace 4.44 long, 2.6 wide. Palps reddish orange, gradually darkening distally. Legs reddish orange, with pairs I-II darker. Femur, patella and tibia I-II darkly marbled mainly on the ventral, prolateral and retrolateral regions (Fig. 7 H–I). Legs: robust, with long setae, and with ventral tibial and metatarsal spines of similar size (Fig. 7 H–I). Leg formula: I-II-IV-III. Leg measurements: I, femur 2.88, patella 1.28, tibia 2.12, metatarsus 2.12, tarsus 0.88, total 9.28; II, 2.84, 1.28, 2.16, 2.12, 0,84, 9.24; III, 2.32, 1.08, 1.44, 1.6, 0.76, 7.2; IV, 2.84, 1.28, 2.08, 1.8, 0.8, 8.8. Spination: leg I, femur p0-0-0-0-0-2-0; tibia vp1-0-1-0-1-0-1, vr1-0-1-0-1-0-1; metatarsus vp 0-1-1-1-1-1-1, v0-0-0-0-0-0-2, vr0-1-1-1-0-1-1 (Fig. 7 H–I); leg II, femur p0-0-0-0-0-1-0; tibia vp0-0-0-0-0-0-1, vr1-0- 1 -0-1-0-1; metatarsus vp0-1-0-1-0-1-1, v0-0-0-0-0-0-2, vr0-1-0-1-0-1-1; leg IV, tibia vr0-0-0-0-0-0-1; metatarsus vp0-0-1/0-0-0-0-2/1, vr metatarsal comb with 5-6 spines.

Variation.

Male (n=2): Total length 8.0-8.4; carapace 3.92-4.0 long, 2.4-2.76 wide; femur I 3.08-3.2. Female (n=3): Total length 9.32-11.92; carapace 4.24-4.44 long, 2.6-2.76 wide; femur I 2.72-2.92.

Distribution.

Monterey County to Santa Barbara County, California, USA (Fig. 11).

Remarks.

One male of Citharoceps was found from the type locality of Segestria cruzana . After the examination of the immature holotype of Segestria cruzana , it was detected that it possessed the stridulatory apparatus exclusive for Citharoceps , not detected by Chamberlin and Ivie (1935), thus we transferred this species to this genus. In addition, in the additional material, females of Citharoceps were found from the middle coast of California that resemble those described by Chamberlin and Ivie (1935) as Citharoceps californica , together with a male, from the same region, that is similar to the one from Santa Cruz Island. Thus, Citharoceps californica is removed from its synonym with Citharoceps fidicina , due to its greater size and darker coloration, and placed as junior synonym of Citharoceps cruzana .