Lepthercus confusus, Ríos-Tamayo & Lyle, 2020

Ríos-Tamayo, Duniesky & Lyle, Robin, 2020, The South African genus Lepthercus Purcell, 1902 (Araneae: Mygalomorphae) phylogeny and taxonomy, Zootaxa 4766 (2), pp. 261-305: 269-272

publication ID

http://doi.org/ 10.11646/zootaxa.4766.2.2

publication LSID

lsid:zoobank.org:pub:urn:lsid:zoobank.org:pub:BA570D47-FE77-446C-B000-9208C9A6E957

DOI

http://doi.org/10.5281/zenodo.3803500

persistent identifier

http://treatment.plazi.org/id/03F11B20-FFD6-FF83-8EE8-3937FC5CD749

treatment provided by

Carolina

scientific name

Lepthercus confusus
status

sp. nov.

Lepthercus confusus   sp. nov.

( Figs. 3 View FIGURE A–I, 4A–E, 24)

http://zoobank.org/ urn:lsid:zoobank.org:act:19380CC0-30E8-412C-8509-F69267536BC6

Material examined. Type material: Holotype ♂. SOUTH AFRICA: KwaZulu–Natal Province, Sani Pass (29°35′S 29°17′E, 2700m), 22.vi.2009, UP students leg., ( NCA 2011 /318) GoogleMaps   .— Paratypes. SOUTH AFRICA: KwaZulu–Natal

Province: Weza, Ngeli Forest [30°34’S 29°42’E], x.1962, Lawrence R.F. leg., 3 ♀♀ (NM8787); Same data as holotype: 22.i.2010, 1 ♂ ( NCA 2010/4443); 20.i.2008, 1 ♂ ( NCA 2010/3642); same data as holotype 3 ♂♂ ( NCA 2010/3640); same data as holotype 22.i.2009, 2 ♂♂ ( NCA 2011/379); same data as holotype (29°36′S 29°18′E, 2400m), 24.i.2006, 2 ♂♂ ( NCA 2010/3735).

Etymology. The specific epithet refers to the great confusion felt in the beginning stages of this work about the placement of this species.

Diagnosis. Males of L. confusus   sp. nov., can be distinguished from males of “Group dregei” by a short bulb with a tapering embolus with longitudinal keels ( Fig. 3F, H View FIGURE ) similar to L. dregei   but differs by their slender embolus, with a small lateral keel ( Fig. 3F, G View FIGURE ). Further it is differentiated by the presence of a small cuticular spur on tibia I ( Fig. 3I View FIGURE , longer in others). Females can be distinguished by the shape of their spermathecae with a base with a slight transition to the stalk, straight stalks twisted and oval receptacles inwardly curved ( Fig. 4E View FIGURE ).

Description. Male holotype (NCA 2011/318, Fig. 3 View FIGURE A–I). Total length 11.40. Carapace ( Fig. 3A View FIGURE ): length 5.21, width 4.17, lateral marginal bristles present, with sparse pubescence. Cephalic region: length 3.28; clypeus short with 5 bristles on the edge, numerous long bristles in front of the OQ and between the PME, dorsal line of bristles until the fovea. Fovea: width 0.45, short and almost straight. Ocular measurements: AME 0.14, ALE 0.21, PME 0.17, PLE 0.19, OQ length 0.48, 0.78 width; AME–ALE 0.05, PME–PLE 0.05, AME–PME 0.07, ALE–PLE 0.08, AME–AME 0.11, OMP–OMP 0.31. Chelicerae: length 2.72, width 1.53, dorsal-anterior bristles present, interc- heliceral tumescence small, well-marked and with setae ( Fig. 3C View FIGURE ). Fang groove with 6 promarginal teeth and 7 basomedial denticles. Labium: length 0.35, width 0.80, without cuspules. Maxillae: length 1.60, width 0.72, with about 65 minuscule cuspules on inner corner, prolateral face slightly curved, with long uniformly distributed hairs. Sternum ( Fig. 3B View FIGURE ): length 2.71, maximum width 2.14. Abdomen: length 4.42. PMS: length 0.57; PLS: length of basal:medial:apical segments 0.80:0.75:1.11; total length 2.66. Lengths of legs and palp: I 4.16, 2.24, 3.06, 3.13, 2.43, 15.02. II 3.95, 2.35, 2.67, 2.93, 2.21, 14.11. III 3.54, 1.89, 2.39, 3.39, 2.01, 13.22. IV 4.41, 2.15, 3.38, 4.77, 2.24, 16.95. Palp 2.23, 1.26, 1.39, —, 0.76, 5.64.

Chaetotaxy: Leg I: femur, 1-1-1-1-1-1-1-1-1 d (centrals), 1-1-1-2 P SUP, 1-0-1-1 R SUP; patella, 1 P A; tibia, 1-1-2 P, 1-1 R, 1-2-1-2-3-2 V, a small spur, with an apical long and curved spine (longer than the spur, Fig. 3I View FIGURE ); metatarsus, 1-1-0-1 V POST, straight without protuberance; tarsus, 0. Leg II: femur, 1-1-1-1-1-1 d, 1-0-1-1 P SUP, 1-1-1 R SUP; patella, 1 P A; tibia, 1-1 P, 2-2-1-4 V; metatarsus, 1 D M, 2-2-2 V; tarsus, 0. Leg III: femur, 1-1-1-1 d, 1-1-1-1 P SUP, 1-1-1-1 R SUP; patella, 1-1-2 P, 1 R; tibia, 1-1 P, 1-1 D, 1-1 R, 2-1-2-3 V; metatarsus, 1-1-1 P, 2-1-2-2 D, 2-1-1-3 V; tarsus, 0. Leg IV: femur, 1-1-1-1-1 d, 1-1-1-1 P SUP, 1-1-1-1 R SUP; patella, 1 R; tibia, 1 P, 1-1-1 R, 2-2-3 V; metatarsus, 1-1 P, 1-1-2-1-2 D, 2-2-1-3 V; tarsus, 0. Palp ( Fig. 2D, E View FIGURE ): femur, 1-1-1-3 d; patella, 1 p; tibia, 1-2 P, 1 RA, 1 v, (width/length: 0.56); tarsus, 0.

Scopulae: Metatarsi: I–II, dense, uniformly distributed throughout the segment; III, sparse (1:3A), divided by narrow band of setae; IV, sparse (A), divided by a wide band of setae. Tarsi: I-II, dense, uniformly distributed throughout the segment; III, sparse, uniformly distributed and divided by narrow band of setae; IV, sparse, uniformly distributed and divided by a narrow band of setae. Trichobothria: Tibiae: I-II 10-11; III 10-10; IV 12-12. Metatarsi: I (4)1(1)1(2)1; II (5)1(3)1(5)1; III (6)1(2)1(6)1; IV (4)1(3)1(4)1(6)1. Tarsi: I-II 13; III-IV 12. Preening combs: III 2 R V–2 P V, IV 3/2 R V. Copulatory bulb: small, with a short and acuminate embolus with basal keels and the tip curved ( Fig. 3 View FIGURE F–H), spermatic duct slightly curved. Color: Carapace and legs brown-orange. Abdomen dorsally dark without bands, covered with short and long dark hairs; sternum and ventral abdomen lighter; spinnerets yellowish with dark spots.

Female paratype (NM8787, Fig. 4 View FIGURE A–E). Total length 12.07. Carapace ( Fig. 4A View FIGURE ): length 4.06, width 2.74, with small marginal bristles and sparse pubescence. Cephalic region: length 2.61, clypeus small (almost absent) with 3 marginal bristles; 4 bristles in front of the OQ and 3 between the PME, line of small bristles until the fovea. Fovea: width 0.34, almost straight (slightly procurved). Ocular measurements: AME 0.10, ALE 0.23, PME 0.13, PLE 0.17, OQ length 0.36, width 0.72; AME–ALE 0.04, PME–PLE 0.03, AME–PME 0.06, ALE–PLE 0.02, AME–AME 0.09, PME–PME 0.28. Chelicerae ( Fig. 4D View FIGURE ): length 2.30, width 1.46; with dorsal-retrolateral dark bristles. Fang groove with 8 promarginal teeth and 18 mesobasal denticles. Labium: length 0.27, width 0.67, dorsally slightly concave without cuspules. Maxillae: length 1.43, width 0.69, with 85 cuspules on posterior inner corner, prolateral face concave, soft, with long uniformly distributed hairs, serrula present on anterior inner corner. Sternum ( Fig. 4C View FIGURE ): length 1.98, maximum width 1.64. Abdomen ( Fig. 4B View FIGURE ): length 6.43, with small hairs in the dorsum. PMS: length 0.61; PLS: length of basal:medial:apical segments 1.23:0.79:1.16; total length 3.18. Lengths of legs and palp: I: 2.63, 1.72, 1.85, 1.38, 0.98, 8.56. II: 2.41, 1.45, 1.51, 1.33, 0.98, 7.68. III: 2.21, 1.35, 1.36, 1.80, 1.02, 7.74. IV: 2.88, 1.66, 2.04, 1.74, 1.15, 9.47. Palp: 1.88, 1.21, 1.14, —, 1.24, 5.47.

Chaetotaxy: Leg I: femur, 1-1-1-1-1 d, 1 P A; patella, 0; tibia, 1 p, 1-1-2 v; metatarsus, 2-1-1 V; tarsus, 0. Leg II: femur, 1-1-1-1-1-1 d, 1 P A; patella, 0; tibia, 1 p, 2-2-3 v; metatarsus, 2-2-2 V; tarsus, 0. Leg III: femur, 1-1-1-1 d, 1 P A, 1-1 R A; patella, 1-1 P, 1 R; tibia, 1-1 P, 1-1-1 D, 1 R, 2-2-3 V (thins); metatarsus, 2-1-1-1 P, 1-1-1 D–P, 2- 1-2 D–R, 3-3-3 V; tarsus, 0. Leg IV: femur, 1-1-1-1-1 d, 1 R A; patella, 1 R; tibia, 1-1 P, 1-1 R, 2-2-3 V; metatarsus, 1-1-1-1 P, 1-1-1 D–P, 1-1-0-1 D–R, 1-1-1 R, 4-1-2-3 V; tarsus, 0. Palp: femur, 1-1-1 d, 1 pa; patella, 0; tibia, 1-1 P, 2-3 V (1:2A); tarsus, 2 V B.

Scopulae: Metatarsi: I, dense, uniformly distributed and divided by bristles; II, dense (1:2 A), divided by band of setae; III–IV, no present. Tarsi: I, dense, uniformly distributed and divided by bristles; II, sparse, uniformly distributed and divided by setae; III, sparse (1:3 A) and divided by a narrow band of setae; IV, sparse (3:4 A) and divided by a wide band of setae. Trichobothria: Tibiae: palp 7-8; I 10-9; II 9-9; III 8-8; IV 10-9. Metatarsi: I (3)1(1)1(4)1; II-III (4)1(2)1(4)1; IV (4)1(2)1(3)1(5)1. Tarsi: palp 8; I 12; II-IV 11. Preening combs: metatarsus: II 5 P V; III 3 P V–3 R V; IV 2 P V–3 R V. Spermathecae: as in Fig. 4E View FIGURE . Color: Overall orange-yellowish, sternum lighter. Abdomen brown mottled with light spots on dorsal side, spinnerets light brown.

Distribution. KwaZulu-Natal Province, South Africa ( Fig. 24 View FIGURE ).

UP

University of Papua and New Guinea

R

Departamento de Geologia, Universidad de Chile

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Nemesiidae

Genus

Lepthercus