Goloboffia griswoldi, Ferretti & Ríos-Tamayo & Goloboff, 2019

Ferretti, Nelson E., Ríos-Tamayo, Duniesky & Goloboff, Pablo A., 2019, Four new species of Goloboffia (Mygalomorphae: Migidae) from Chile, Zootaxa 4712 (2), pp. 251-268 : 253-256

Goloboffia griswoldi sp. nov.

( Figs 1–9 , 71 )

Type material. Holotype: ♀, MACN-Ar 36129, Chile, Región de Coquimbo (IV), Playa Agua dulce, 46 km north of Los Vilos (collected in a ravine), 5-6.xi.1988, P. Goloboff leg. Paratype: 1 ♀, MACN-Ar36129, same collection data .

Additional material examined. 1 ♀ and 16 juveniles, MACN-Ar 36129, Chile, Región de Coquimbo (IV), Playa Agua dulce, 46 km north of Los Vilos (collected in a ravine), 5-6.xi.1988, P. Goloboff leg. ; 1 ♀, MACN-Ar 36117, Chile, Región de Coquimbo (IV), Playa Agua dulce, 46 km north of Los Vilos , 5-6.xi.1988, P. Goloboff leg.

Etymology. The specific epithet is a patronym in honor of the U.S. arachnologist Charles Griswold, in recognition of his fundamental contributions to spider systematics, including works on the migid fauna.

Diagnosis. Females of Goloboffia griswoldi sp. nov. differ from females of the other known species by the narrower ocular quadrangle occupying less than half of the width carapace (about 0.45 of width) ( Figs 1 , 4 ) in combination with the spermathecae having ducts as long as spermathecal head width, and lobes rounded and pointing outwards ( Fig. 9 ).

Description. Female holotype (MACN-Ar 36129). Coloration (in alcohol): Carapace, legs and chelicerae reddish brown ( Figs 1, 3 ), abdomen grayish. Total length 13.26; carapace 5.15 long, 4.57 wide. Fovea deep, straight with recurved ends, 1.04 wide. Ocular group 1.89 wide, occupying 0.44 of cephalic width ( Figs 1 , 4 ). Eye sizes and interdistances: AME 0.16, PME 0.19, ALE 0.49, PLE 0.14, AME–AME 0.19, AME–ALE 0.33, PLE–PME 0.11, PME–PME 0.91. Labium 0.93 long, 0.84 wide, with 12 cuspules ( Fig. 5 ). Labium separated from sternum by shallow groove. Maxillae with 15/12 (right/left) cuspules ( Fig. 5 ). Fangs keeled and chelicerae with subequal teeth, 4 promarginal and 4 retromarginal, and 19 denticles between margins. Sternum elongated, 2.4 long, 2.49 wide. Posterior sigillae deep, large and airfoil shaped ( Fig. 2 ). Leg formula 4123, tibiae and metatarsi I and II flattened, with very long spines ( Figs 6–7 ). Segment lengths (femur, patella, tibia, metatarsus, tarsus, total): I: 2.82, 1.53, 1.91, 1.51, 0.77, 8.54. II: 2.4, 1.65, 2.15, 1.10, 0.59, 7.89. III: 2.75, 1.43, 1.59, 1.28, 0.68, 7.73. IV: 3.36, 1.94, 2.38, 2.35, 1.23, 11.26. Palp: 1.65, 0.96, 1.1, –, 1.02, 4.73. Spines: Femur: Palp and legs I – IV, 0. Patella: Palp: 1 – 1p; I: 1p; II: 1p; III: 25p; IV: 62d. Tibia: Palp: 1p, 1 – 1r; I: 7p, 12r; II: 5p, 8r; III: 13p; IV: 0. Metatarsus: I: 7p, 8r; II: 6p, 5r; III: ventral comb of 26 large and 28 small spines ( Fig. 8 ); IV: ventral comb of 25 large and 15 small spines. Tarsus: Palp: 3p, 3r; I: 5p, 8r, 16v; II: 6p, 11r, 19v; III: 38v (stronger toward distal end); IV: 0. Spermathecae with long ducts (as long as spermathecal head width) with a well-developed constriction between ducts and receptacles, which are rounded and pointed outwards ( Fig. 9 ).

Male. Unknown.

Distribution. Known only from the type locality ( Fig. 71 ).

Figures

FIGURE 71. Known distribution of Goloboffia species in Chile.

FIGURES 1–3. Goloboffia griswoldi sp. nov., female holotype (MACN-Ar 36129). 1. Carapace, dorsal view. 2. Labium and sternum. 3. Carapace, lateral view. Scale bars=1 mm.

FIGURES 4–9. Goloboffia griswoldi sp. nov., female holotype (MACN-Ar 36129). 4. Eye group, dorsal view. 5. Labium and maxillae. 6. Metatarsus I, prolateral view. 7. Tibia I, prolateral view. 8. Tarsus III, retrolateral view. 9. Spermathecae, dorsal view. Scale bars=1 mm.