Citharoceps fidicina Chamberlin, 1924

Giroti, Andre Marsola & Brescovit, Antonio Domingos, 2015, Revalidation of the spider genus Citharoceps Chamberlin, 1924 (Araneae, Segestriidae), ZooKeys 495, pp. 1-19 : 4-5

Taxon classification Animalia Araneae Segestriidae

Citharoceps fidicina Chamberlin, 1924 comb. rest. Figs 1, 2, 3, 4 A–F, 5, 6

Citharoceps fidicina Chamberlin, 1924: 608 (Immature holotype from Ensenada [31°51'28"N; 116°36'21"W] (DMS), Baja California, Mexico, 4.VII.1921, Soiver leg., deposited in CAS 1392, examined).

Ariadna fidicina - Beatty, 1970: 478 (Syn.). - World Spider Catalog, 2015.

Additional material examined.

UNITED STATES OF AMERICA. California:San Diego County: San Diego, La Jolla [32°50'24"N; 117°16'37"W] (DMS), Eucalyptus grove, 1♀ 1imm., XII.1965, F. Ennik leg. (CAS 9039517); San Diego, Point Loma Peninsula [32°41'1.64"N; 117°14'52.07"W] (DMS), 2♂, 8-12.IX.2003, D. Chan & T. Duffield leg. (CNMP); MEXICO. Baja California del Norte: 2.5mi S. of the Halfway House on Mex. Highway #1 (RB-3) [30°33'N; 115°10'W] (DMS), 2♀ 1imm., 21.XI.1962, P. R. Craig & D. Dailey leg. (CAS 9039518; 9039526; 9039546).

Diagnosis.

Males of Citharoceps fidicina differ from those of Citharoceps cruzana by the slightly shorter and thicker embolus (Fig. 6 A–B) and by a straight metatarsus I (Fig. 5 C–E). Females differ from Citharoceps cruzana by the anterior receptaculum with both dorsal and ventral lobes well delimited, the ventral lobe projected and laterally expanded (Figs 4 D–F, 6 C–D).

Description.

Male (CNMP). Total length 5.2; carapace 2.64 long, 1.76 wide. Palps light brownish orange (Fig. 6 A–B). Legs: robust, with short setae, and spines with different sizes (Fig. 5 C–E). Leg formula: I/II-III-IV. Leg measurements: I, femur 2.36, patella 0.88, tibia 1.96, metatarsus 2.12, tarsus 0.88, total 8.2; II, 2.36, 0.88, 1.96, 2.12, 0.88, 8.2; III, 1.88, 0.68, 1.4, 1.48, 0.68, 6.12; IV, 2.16, 0.88, 1.68, 1.64, 0,68, 7.04. Spination: leg I, femur d0-0-0-1-0-0/1-0, p0-0-0-0-1/0-1-0; tibia p0-0-0-1-0-1-0, vp1-0-1-0-1-0-1, v1-0-1-0-1-0-0, vr2/1-0-1-0-1-0-1, r0-1-1-1-1-1-0; metatarsus p0, vp0-1-0-0-1-1-1, v0-0-1-0-0-0-2, vr0-1-0-0-1-1-1, r0-1-0-0-0-0-0 (Fig. 5 C–E); leg II, femur d0-0-1-1-0-0/1-0, p0-0-0-0-0-1-0; tibia p0-1-0-1-0-1-0, vp0-0-0-0/1-0-1-1, v0-0-1-0-1-0-0, vr1-0-1-0-1-0-1, r1-0-0/1-0-1-0-0; metatarsus vp0-1-0-0-1-1-1, v0-0-1-0-0-0-2, vr0-1-1-1-0-0-1; leg IV femur d1-0-1-0-1-0-0-0; tibia v0-0-0/1-0-0-1-0, vr0-0-0-0-0-0-1; metatarsus vp0-0-1-0-0-0-1, vr metatarsal comb with 5 spines.

Female (CAS 9039517). Total length 8.0; carapace 3.72 long, 2.36 wide. Palps orange, gradually darkening distally. Legs: robust, with long setae, and with ventral tibial and metatarsal spines of similar size (Fig. 5 H–I). Leg formula: I-II-IV-III. Leg measurements: I, femur 2.56, patella 1.08, tibia 1.88, metatarsus 1.72, tarsus 0.76, total 8.0; II, 2.36, 1.08, 1.84, 1.76, 0.76, 7.8; III, 1.92, 1.0, 1.28, 1.24, 0.68, 6.12; IV, 2.4, 1.24, 1.8, 1.52, 0.68, 7.64. Spination: I, femur p0-0-0-0-0-1-0; tibia vp1- 0 -1-0-1-0-1, vr1-0-1-0-1-0-1; metatarsus vp0-1-0-1-1-1-1-1, v0-0-1-0-0-0-0-2, vr0-1-0-1-1-0-1-1-1 (Fig. 5 H–I); II, tibia vr1-0-1-0-1-0-2/1; metatarsus vp0-1-0-1-1-1, v0-0-0/1-0-0-2, vr0-1-0-1-0-1; IV, vr metatarsal comb with 6-7 spines (Fig. 2H).

Variation.

Male (n=2): Total length 5.0-5.2; carapace 2.64-2.72 long; femur I 2.36-2.44. Female (n=3): Total length 6.08-8.0; carapace 3.0-3.72 long, 1.84-2.36 wide; femur I 1.92-2.56.

Distribution.

South of California, USA and Baja California, Mexico (Fig. 11).

Remarks.

We feel that species attribution is unproblematic. The immature specimen collected in Baja California del Norte by Craig and Dailey in 1962, matches perfectly with the type material of Citharoceps fidicina . In addition, that immature was collected with two females that match perfectly with the females collected in San Diego.