Otoniela tigre, Oliveira & De Alvarenga & Brescovit, 2023

Oliveira, Luiz Fernando M., De Alvarenga, José Geraldo G. & Brescovit, Antonio D., 2023, On the Neotropical spider genus Otoniela Brescovit, 1997 (Araneae: Anyphaenidae, Anyphaeninae), with the description of six new species, Zootaxa 5383 (1), pp. 1-23 : 15-18

Otoniela tigre new species

Figs 9A–G ; 10A–I ; 13B

Otoniela sp. ; Rodrigues et al., 2008: 366.

Types. Male holotype from Tigre (22°56’16.60”S; 52°41’12.97”W), Buenos Aires, Argentina, 19.VIII.1981, T.M. Viana leg., deposited in MACN-Ar. Two males and two females paratypes with same data of the holotype, deposited in IBSP 279633 .

Etymology. The specific epithet is a toponymic in apposition and refers to the type locality.

Diagnosis. Males of Otoniela tigre sp. nov. resemble those O. quadrivittata and O. negrinho sp. nov. by the precense of pointed ventral tegular projection (see Brescovit 1997a: 159, figs 136, 137; Figs 9C , 10G, H ; 11C, D ). They differ from others species of the quadrivittata group by the prolaterally transversal short ventral tegular projection, long retrolateral patellar apophysis ( Figs 9C–E ; 10C–H ). Retrolaterally ventral tegular projection in O. quadrivittata (see Brescovit 1997a: 159, figs 136, 137); transversal ventral tegular projection distally larger and median apophysis with more accentuated apical curvature in O. negrinho sp. nov. ( Figs 11C–E ). Females resemble those of O. quadrivittata (see Brescovit, 1997a, figs 138, 139) and O. negrinho sp. nov. by the united spermathecae in the anterior region of the vulva ( Figs 9F, G ; 11G, H ). They differ by the anterior third of copulatory ducts narrowed ( Fig. 9G ). Long copulatory ducts laterally inserted on the spermathecae in O. quadrivittata (see Brescovit, 1997a, figs 138, 139) and wide opening of the copulatory ducts in O. negrinho sp. nov. ( Fig. 11H ).

Description. Male (MACN-Ar). Carapace orange with paramedian bands brown. Chelicerae brown. Endites, labium and sternum yellow. Legs dark orange slightly darker distally on the tibiae and metatarsi. Abdomen beige with grayish dorsal longitudinal bands ( Fig. 9A ). Total length 3.6. Carapace 1.75 long, 1.3 wide. Clypeus 0.05. Eye diameters and interdistances: AME 0.09, ALE 0.09, PME 0.09, PLE 0.07, AME–AME 0.02, AME–ALE 0.02, PME–PME 0.12, PME–PLE 0.10, ALE–PLE 0.06. Chelicerae 0.55 long, with seven promarginal teeth and eight retromarginal denticles ( Fig. 10A ). Leg measurements: I—femur 1.15/ patella 0.5/ tibia 1.05/ metatarsus 0.85/ tarsus 0.45/ total 4.0; II—1.0/ 0.45/ 0.95/ 0.85/ 0.40/ 3.65; III—1.0/ 0.5/ 0.75/ 0.75/ 0.35/ 3.35; IV—1.3/ 0.6/ 1.1/ 1.45/ 0.45/ 4.9. Leg spination: I–II—tibia, p0, metatarsus p0; III—tibia v1-1-2, p0-1-1, r0-1-1, metatarsus v2-0-1; IV—tibia v1-2-2, metatarso v2-2-0. Abdomen: length 1.85, epigastric furrow 0.45 from tracheal spiracle, spiracle 0.65 from base of spinnerets. Palp: retrolateral patellar apophysis elongated, with basal liriform organ; short dorsal patellar apophysis, with a flat apex; apical prolateral tibial apophysis short and conical; thick retrolateral tibial apophysis with rounded apex; cymbium bearing two stout apical prolateral spines apically inserted; ventral tegular projection filiform, slightly curved upwards; median apophysis with ventrally curved apex; long embolus ( Figs 10B–H ).

Female (MACN-Ar). Coloration as in male, except chelicerae and abdomen darker ( Fig. 10B ). Total length 4.35. Carapace 1.75 long, 1.2 wide. Clypeus 0.05. Eye diameters and interdistances: AME 0.09, ALE 0.10, PME 0.10, PLE 0.09, AME–AME 0.03, AME–ALE 0.02, PME–PME 0.13, PME–PLE 0.12, ALE–PLE 0.03. Chelicerae 0.55 long, with seven promarginal teeth and eight retromarginal denticles. Leg measurements: I—femur 1.5/ patella 0.5/ tibia 1.1/ metatarsus 0.85/ tarsus 0.4/ total 4.35/ II—1.1/ 0.6/ 1.0/ 0.8/ 0.45/ 3.95; III—1.0/ 0.5/ 0.6/ 0.75/ 0.4/ 3.25; IV—1.5/ 0.6/ 1.2/ 1.35/ 0.3/ 4.95. Leg spination: I–II—tibia, p0, metatarsus p0; III—tibia v1-1-2, p0-1-1, r0-1- 1, metatarsus v2-0-1; IV—tibia v1-2-2, metatarsus v2-2-0. Abdomen: length 2.5, epigastric furrow 0.7 from tracheal spiracle, spiracle 0.95 from base of spinnerets. Epigynum: short atrium; lateral borders sclerotized ( Fig. 9F ; 10I ). Internally with copulatory ducts as long as the spermathecae; seminal receptacles together with the spermathecae, but not visible by transparency; spermathecae large, oval and close together; fertilization ducts elongated, away from the copulatory opening ( Fig. 9G ).

Variation. Males (n=10): total length 3.4–3.8; carapace length 1.6–1.8; femur I length 1.1-1.2. Females (n=10): total length: 3.5–4.75; carapace length 1.5–1.8; femur I length 1.0–12.

Other material examined. BRAZIL. Paraná: Pontal do Sul (25°34’41.13”S; 48°21’45.12”W), 1♀, 19.IX.1991, M.V. Almeida leg. ( MCN 21864 ) ; Rio Branco do Sul (25°11’23.07”S; 49°18’48.87”W), 1♂, 16.IV.1987, A.D. Brescovit leg. ( MCN) ; Santa Catarina: Lajes (27°48’55.67”S; 50°19’34.88”W), BR02, 1♂, 06.V.1967, P. de Biasi leg. ( MZSP 12156 ) ; BRAZIL / ARGENTINA: Rio Iguaçu (25°40’48”S; 54°26’6”W), Ancoradouro, Margem direita, 1♀, 30.IV.1980 ( IBSP 5210 ) . Rio Grande do Sul: Cachoeirinha, Irga, Estação Experimental do Arroz (50°58’21”S; 29°55’30”S), 1♀, 16.V.2005, E.N.L. Rodrigues leg. ( MCN 40520 ) ; 1♀, 27.V.2005 ( MCN 40525 ) ; 1♂, 16.V.2005 ( MCN 40504 ) ; 1♀, 20.IV.2005 ( MCN 40470 ) ; Machadinho (27°33’57.53”S; 51°40’4.15”W), 1♂, 08.XII ( MCTP); Porto Alegre-Pelotas, BR 116 , Km 94 (28°58’1.23”S; 51°4’25.34”W), 1♂, 2♀, 10.V.1967, P. de Biasi leg. ( MZSP 12304 ) ; Pelotas (31°46’19”S; 52°20’34”W), 1♀, 01.VII.2008, E.N.L. Rodrigues leg. ( MCN 33427 ) ; Viamão (30°04’51”S; 51°01’22”W), 1♂, 30.V.2000, A.B. Bonaldo leg. ( MCN 32877 ) . ARGENTINA. Província de Buenos Aires: Buenos Aires, Paraná de Las Palmas (34°17’0.55”S; 58°35’22.90”W), 2♀, 01.VII.1963, A.O. Bachman leg. ( MACN-Ar) ; 3♂, 3♀, 17.IX.1943, M.E. Galiano leg. ( MACN-Ar) ; Buenos Aires (34°36’13.26”S; 58°22’53.61”W), 1♀, X.1941, T.M.Viana leg.( MACN-Ar) ; Tigre (34°25’30.31”S; 58°34’46.77”W), 6♂, 6♀, 19.VIII.1981, T.M.Viana leg. ( MACN-Ar) ; 2♂, 2♀, 19.VIII.1981, T.M. Viana leg. ( IBSP 279633 ) ; Misiones: Santa Maria (27°56’5.63”S; 55°24’23.37”W), 1♀, XII.1947, T.M. Viana leg. ( MACN-Ar 2553 ) ; Provincia de Salta: El Rey National Park , 950m from Pozo Verde Trail (24°41’60.00”S; 64°37’60.00”W), 1♀, 10-13.XII.1987 ( AMNH) ; El Rey National Park, 900m from Aguas Negras Trail (24°41’60.00”S; 64°37’60.00”W), 6♂ 11–15.XII.1987 ( AMNH) ; El Rey National Park, 880m from Río Los Puestos (24°41’60.00”S; 64°37’60.00”W), 3♂, 3♀, 6–16.XII.1987 ( AMNH), all collected by S. & J. Peck.

Distribution. Brazil (States of Paraná, Santa Catarina and Rio Grande do Sul) and Argentina ( Fig. 13B ).

Figures

FIGURE 9A–G. Otoniela tigre sp. nov.. Male (AMNH): A habitus, dorsal view; C left palp, ventral view; D same, prolateral view; E same, retrolateral view. Female (AMNH): B habitus, dorsal view; F epigynum, ventral view; G vulva, dorsal view. Abbreviations:A, atrium; CD, copulatory ducts; DPA, dorsal patellar apophysis; E, embolus; FD, fertilization ducts; LB, lateral borders; MA, median apophysis; PTA, prolateral tibial apophysis; RTA, retrolateral tibial apophysis; RPA, retrolateral patellar apophysis; S, spermatheca; ST, subtegulum, T, tegulum; VTP, ventral tegular projection. Scale bars: A, B 2.16mm; C 0.4mm; D, E, F, G 0.25mm.

FIGURE 10A–I. Otoniela tigre sp. nov.. Male (IBSP 128151): A chelicera, ventral view; B left palp, prolateral view; C same, ventral view; D same, retrolateral view (arrow indicate the lyriform organ in the patella); E same, detail patella, retrolateral view (arrow indicate the lyriform organ in the patella); F same, retrodorsal view; G left palp, copulatory bulb, ventral view; H same, retroventral view (arrow indicate macrosetae in prolateral view). Female (IBSP 128151): I epigynum, ventral view. Abbreviations: A, atrium; CD, copulatory ducts; CO, copulatory opening; DPA, dorsal patellar apophysis; E, embolus; FD, fertilization ducts; LB, lateral borders; MA, median apophysis; PTA, prolateral tibial apophysis; RPA, retrolateral patellar apophysis; RTA, retrolateral tibial apophysis; ST, subtegulum, T, tegulum, VTP, ventral tegular projection. Scale bars: A, B, C, D, F, H, I 0.1mm; E 0.05mm; G 0.2mm.

FIGURE 11A–H. Otoniela negrinho sp. nov.. Male (IBSP 70049): A habitus, dorsal view; C, D left palp, ventral view; E same, retrolateral view; F same, prolateral view. Female (IBSP 70049): G epigynum, ventral view; H vulva, dorsal view. Abbreviations: A, atrium; CD, copulatory ducts; CO, copulatory opening; DPA, dorsal patellar apophysis; E, embolus; FD, fertilization ducts; LB, lateral borders; MA, median apophysis; PTA, prolateral tibial apophysis; RPA, retrolateral patellar apophysis; RTA, retrolateral tibial apophysis; ST, subtegulum; S, spermatheca; T, tegulum; VTP, ventral tegular projection. Scale bars: A 1.5mm; B 2.16mm; C, D, E, F, G 0.25mm.

FIGURE 13 A–B. Distribution map of Otoniela species.