Actinopus coylei, Ríos-Tamayo & Goloboff, 2018

Ríos-Tamayo, D. & Goloboff, P. A., 2018, Taxonomic Revision And Morphology Of The Trapdoor Spider Genus Actinopus (Mygalomorphae: Actinopodidae) In Argentina, Bulletin of the American Museum of Natural History 2018 (419), pp. 1-84 : 36-40

Actinopus coylei , sp. nov.

Figures 16A–G, 17A–F, 44

TYPE MATERIAL: HOLOTYPE ♀ (MACN-Ar 36564): Salta. 1 km E de Hickman [23°13′ S 63°33′ W], 22 Mar. 1988, P. Goloboff, F. Coyle, and R. Bennet, 1♀. PARATYPE: male (MACN-Ar 36565). Santiago del Estero. Sumampa [29°21′ S 63°28′ W], Nov. 1954, Maldonado. 1♂.

ETYMOLOGY: The specific epithet is a patronymic in honor of Frederick A. Coyle, a student of Mygalomorphae , and collector of the type specimen.

DIAGNOSIS: Females of A. coylei can be distinguished by the shape of their spermathecae with a squared base and a long external lobe, slightly straight or curved inward (fig. 17D, E). It is distinguished from all other species (except A. argenteus and A. patagonia ) by the sternal sigilla I–II well marked and posteriorly reaching the central depression of the sternum (fig. 17F). It differs from A. argenteus by having a wider sternum. Males differ from A. argenteus by the well-developed ATA and BTA (fig. 16D–F); they can be distinguished from all other species (except de A. argenteus , A. casuhati , A. cordobensis , A. szumikae , A. ariasi , and A. pampa ) by the absence of MRk and the Ak not extending to the apex of the embolus. Cheliceral prolongation without cusps, different from A. insignis , A. gerschiapelliarum , A. taragui , A. puelche , and A. palmar .

DESCRIPTION: Paratype male (MACN-Ar 36565, figs. 16A–G): Total length: 8.88. Carapace (fig. 16A): length 3.90, width 3.18. Cephalic region: length 1.74, width 2.46; clypeus short with some small bristles and one larger central, 8 bristles between PME and 3 behind each PME- PLE dyad, 4–6 bristles on each side of the OQ. Fovea: length 0.54, width 1.38. Eyes, diameters and interdistances: AME 0.12 (small), ALE 0.32, PME 0.16, PLE 0.16, OQ length 0.60, anterior width 1.72, 1.60 posterior width; AME-ALE 0.40, PME-PLE 0.04, AME-PME 0.28, ALE-PLE 0.28, AME-AME 0.20. Chelicerae: length 1.56, width 0.90; cheliceral apex with 10 recumbent and elongated bristles covering the base of the fang; cheliceral prolongation without cusps. Fang groove with 6 promarginal teeth, 5 retromarginal ones (one smaller between 3d–4th and 4th–5th) and 8 denticles in the furrow, near the promargin. Labium: length 0.64, width 0.76. Maxillae: anterior length 0.88, posterior length 1.40, width 0.96. Sternum (fig. 16G): Center flat; length 2.56, maximum width 2.08, minimum width 0.76. Postlabial sigillum shallow, posterior sigilla well defined and shallow. Abdomen: Length 3.42, small covered with small dark bristles, abundant in the dorsum, with 2 anterior spiniform bristles. PMS: length 0.52; PLS: length of basal:medial:apical segments 0.40:0.16:0.12. Spigots: could not be observed. Lengths of legs and palp: I: 3.88, 1.60, 2.44, 2.96, 2.00, 12.88. II: 3.72, 1.68, 1.80, 3.36, 2.20, 11.96. III: 2.92, 1.68, 1.80, 3.36, 2.20, 11.96. IV: 4.00, 1.80, 3.40, 3.68, 2.40, 15.28. Palp: 3.80, 1.80, 3.40, –, 1.00, 10.00.

Chaetotaxy: All femora: 0. Patellae: I-II, 0; III, 27 P SUP, 2 P A +8 on the margin, 1-1-1-1 D (1:2 B), 8 R (1:2 A) +9 on the margin; IV, 44 P SUP-D ANT +3 on the edge. Tibiae: I, 1 V ANT A, 1-1-2 V POST; II, 2-1-2-1-2 R INF (1:2 A), 1 V A ANT, 1-1-2 V POST; III, 1-1 P (1:2 A), 1 D B, with

crown of 17 thorns, 2-1 R (1:3 A), 1-1-1 V POST, 3 V A ANT; IV, 1-1 P, 1-1-4 V ANT, 1-1-2 V POST. Metatarsi: I, 1-1 P (1:2 A), 1-2-1-2-1 R INF, 1-1-1 V POST; II, 1-1 P (1:2 A), 1-2-2 V, 1-1-1-1-2-1-1-2 V POST; III, 1-1 P SUP, 2-1-1- 1-3 R, 1-1-1-1-1-1 V, 1-1-1-1-1-2-V ANT, 1-1-1- 1-2 V POST; IV, 1-2-2-1-3-1-2 P, 1 P A SUP, 1-1-2 V POST, 1-1-1-2-2 V ANT. Tarsi: I, 1-1-1-1 P INF, 1-1-2-2-1-5 R INF, 1-1 V A; II, 1-1-1-1- 1-2 P INF, 2-2-2-1-1-2-3-2-2 R INF, 1 V M; III, 1-1-1-1-2-1-3 P INF, 1-1-1-1-5-2-3-1-1-2 R INF, 1-2 V A; IV, 2-2-1-1-2-6-2-2-1-2-4 P INF, 1-1-1- 1-1-1-1-1-1-1-1 R INF, 1-1-1 V A. Total number of retrolateral spines on tibiae I and II (fig. 16C): 0 and 8 respectively. Palp: Tibia short and thickened (width/length: 0.33±0.02) (fig. 16B). Bulb (fig. 16D–F), well-developed ATA and BTA; embolus with series of denticles at the base. Pseudoscopula: Tarsus: I, sparse A; II, sparse 1:2 A; III-IV, dense and uniform. Metatarsus: not present. Trichobothria: Tibiae: I 4-4; II 4-6; III 4-7; IV 7-8. Metatarsi: I-II 11; III 10; IV 7. Tarsi: I-II 9; III 10; IV 7. Color: Carapace reddish brown, cephalic region and chelicerae darker. Abdomen brown with small dorsal spots, booklungs with

dark markings. Sternum, labium, and maxillae yellowish brown. Legs like carapace, tarsi light. Spinnerets yellowish.

Holotype female (MACN-Ar 36564, fig. 17A– F): Total length: 23.16. Carapace (fig. 17A): length 8.16; width 8.16; 9 bristles on each posterior margin. Cephalic region: length 4.44, width 6.36; clypeus with 35 small bristles and one larger central; chilum with 50 bristles, 4 on each side of the OQ; 22 bristles between PME and 4–5 behind each PME-PLE dyad. Fovea: length 1.08, width 2.70. Eyes, diameters and interdistances: AME 0.24, ALE 0.44, PME 0.32, PLE 0.36, OQ length 1.40, anterior width 3.40; posterior width 3.40; AME-ALE 0.84, PME-PLE 0.12, AME-PME 0.52, ALE-PLE 0.76, AME-AME 0.44. Chelicerae: length, 2.82, width 4.38; small and thin bristles on the lateral proximal half and dorsal; cheliceral apex with two rows of recumbent and elongated bristles covering the base of the fang. Rastellum with 12 marginal, blunt cusps, and 7/8 small dorsal ones. Fang groove with 8 large retromarginal teeth (3d-5th-7th small), 6 promarginal ones, and 12 denticles in the furrow, near the promargin. Labium: length 1.62, width 1.56, with 18 anterior cuspules. Maxillae: anterior length 2.10, posterior length 3.00, width 2.10, with +130 cuspules 1:3 V ANT, extending to the anterior face. Sternum (fig. 17F): Large and wide, with slight central depression: length 5.22, maximum width 4.56, minimum width 1.74. Postlabial sigillum deep, posterior sigilla shallow and well defined; all reaching the center of the sternum. Abdomen: length 11.16, with dark bristles. PMS: length 1.00; PLS: length of basal:medial:apical segments 1.36:0.6:0.4. Spigots: 3 large, 30 small on PMS; PLS, numbers of large(small) spigots on basal:medial:apical article 8(43):9(48):4(56). Lengths of legs and palp: I: 3.90, 2.64, 1.68, 2.40, 1.14, 11.76. II: 3.90, 2.76, 1.80, 2.58, 1.08, 12.12. III: 3.78, 3.30, 1.50, 2.70, 1.08, 12.36. IV: 4.92, 3.54, 3.00, 3.00, 1.02, 15.48. Palp: 3.78, 2.64, 2.70, –, 2.76, 11.78.

Chaetotaxy: All femora: 0. Patellae: I-II, 0; III, 1-2-3 P (1:3 A), 10 on the margin, 58 R (1:3 A); IV, 55 P SUP-D ANT; palp, 1-1- 1 P. Tibiae: I, 1-1- 1/0 P (1:3 A), 1-1-3-1-2/1-0-1-1-1-1 R INF, 1-1 V POS ; II, +104 R (2:3 A), 1-1 V POST; III, 1 D B, with a crown of 17 thorns and 3 apical (at the apex, anterior to the crown; fig. 18C), 68 R (2:3 A); IV, 0; palp, 7 P INF, 17 R INF (2:3 A). Metatarsi: I, 21 P INF, 19 R INF, 1-1-1-2 V POST; II, 19 P INF, 20/25 R INF, 1-1-2 V POST; III, 21 D ANT, 50 on row D POST-R (more abundant R A), 30 D B small (in two fields of 13-17, separated by a glabrous band), 2 VA; IV, 1-1-2-2 P (1:2 A), 1 D A ANT, 2 VA. Tarsi: I, 11 P, 2-2-2-2-2-3-3 R INF (irregularly arranged), 1 V A; II, 13 P INF, 17 R INF, 2 V A; III, 82 V-P, 46 R; IV, 40 V-P. Total number of retrolateral spines on tibiae I and II: 8/5 and 104 respectively. Trichobothria: Tibiae: I 4-6; II 4-7 ; III 5-8 ; IV 5-7 . Metatarsi: I 15 ; II 16 ; III12 ; IV 11 . Tarsi: I 10 ; II 12 ; III 13 ; IV 10 . Color: Carapace reddish brown, darker cephalic region and lighter OQ. Chelicerae dark reddish brown, with lighter dorsal bands and dark spots in the dorsum. Abdomen brown, booklungs with light markings. Spinnerets yellowish. Sternum yellowish, dark sigilla ; labium and maxillae brown yellowish. Legs brown, trochanter and dorsal part of the femora darker.

DISTRIBUTION: Provinces of Salta and Santiago del Estero.

OTHER MATERIAL EXAMINED: Salta. 1 km. E de Hickman [23°13′ S 63°33′ W], 22 Mar. 1988, P. Goloboff, F. Coyle, and R. Bennett, 1 immature (MACN-Ar 36566). Camino a Zanja el Tigre, 5 km. O, de R. N 34 [23°12′ S 64°9′ W], 30 Jan. 1995, P. Goloboff, 2♀ ( FML-ARAN 02229 ). Finca Bateas del Bermejo , 7 km E de El Quimilar [23°19′ S 63°51′ W], 26 Jan. 1995, P. Goloboff, 1♀ ( FML-ARAN 02230 ). La Quena [23°21′ S 63°48′ W], 14–15 May. 1983, P. Goloboff, 4 ♀ (MACN-Ar 36567) ; same data and collector, 3♀, 1 immature (MACN-Ar 36568) ; Same data and collector, 5♀, 5 immature (MACN-Ar 36569). Same data, 4–5 May 1985, C. Szumik and P. Goloboff, 2♀ (MACN-Ar 36570). Rosario de la Frontera [25°47′ S 64°58′ W], 21 May 1944, J. Vellard, 3♀, 1 immature (MACN-Ar 36571). 1 km E de Hickman [23°13′ S 63°33′ W], 22 Mar. 1988, P. Goloboff, F. Coyle, and R. Bennet, 1 immature (MACN-Ar 36604). Santiago del Estero: Rio Hondo [27°35′ S 64°57′ W], Aug. 1939, J. Canals., 1♀ (MACN-Ar 36572). Lujan [28°23′ S 62°22′ W], without collect data, J. Abalos, 1♀ (MACN-Ar 36573). Colonia Dora [28°36′ S 62°56′ W], Jun. 1992, P. Goloboff, 1♀ (MACN-Ar 28409). Tintina, empalme con RP6, a 3 km E de RP92 (26º59′ S 62º40′ W), 28 Mar. 2017, D. Ríos, C. Szumik, R. Gandolfo, A. Molina , 1♀ ( FML-ARAN 02235 ). Catamarca: Singuil , El Chorro , 20–31 Jan. 1953, W. Patridge and S. Núñez, 2♀ (MACN-Ar 36574). 5 km de San Martín, RN 60 (29°12′ S, 65°48′ W), 1995, P. Goloboff, 3♀ ( FML-ARAN 02236 ) .

COMMENTS: Specimens from Catamarca, in contrast to the other males, are larger and present booklungs with light markings; they have, however, a very similar morphology of the copulatory bulb. The inclusion of those specimens in A. coylei is tentative.