Otoniela negrinho, 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 : 19-21

Otoniela negrinho new species

Figs 11A–H; 12B

Types. Male holotype and female paratype from Rio Negrinho (26°14’59.65”S; 49°31’5.04”W), Santa Catarina, Brazil, 2006, M.A. Nickele leg., deposited in IBSP 70049 .

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

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

Description. Male (IBSP 70049). Carapace brown with paramedian bands dark brown. Chelicerae and sternum dark orange. Endites and labium yellowish. Legs orange, slightly darker distally on the tibiae. Abdomen light brown with grayish dorsal longitudinal bands ( Fig. 11A). Total length 3.7. Carapace 1.6 long, 1.3 wide. Clypeus 0.04. Eye diameters and interdistances: AME 0.09, ALE 0.11, PME 0.09, PLE 0.10. AME–AME 0.02, AME–ALE 0.02, PME–PME 0.11, PME–PLE 0.05, ALE–PLE 0.09. Chelicerae 0.6 long, with six promarginal teeth and six retromarginal denticles. Leg measurements: I—femur 1.1/ patella 0.5/ tibia 1.1/ metatarsus 0.85/ tarsus 0.4/ total 3.95; II—1.0/ 0.5/ 0.95/ 0.8/ 0.35/ 3.6; III—0.95/ 0.45/ 0.65/ 0.85/ 0.35/ 3.25; IV—1.35/ 0.6/ 1.15/ 1.6/ 0.5/ 5.2. Leg spination: I—tibia p0, metatarsus p0, r0; II—tibia p0, metatarsus p0, r0; III—tibia v0-1-2, p0-1-1, r0-1-1, metatarsus v2-0-2; IV—tibia v1-2-2, p0-1-1, r0-1-1. Palp: retrolateral patellar apophysis elongated; apical prolateral tibial apophysis short and conical; retrolateral tibial apophysis short and thick, with rounded apex; cymbium bearing two stout apical prolateral inserted; embolus curved ( Figs 11C–F). Abdomen: length 1.95, epigastric furrow 0.6 from tracheal spiracle, spiracle 0.8 from base of spinnerets.

Female (IBSP 70049). Coloration as in male, except carapace and abdomen dorsally clearer ( Fig. 11B). Total length 4.0. Carapace 1.6 long, 1.2 wide. Clypeus 0.03. Eye diameters and interdistances:AME 0.08, ALE 0.09, PME 0.09, PLE 0.10, AME–AME 0.03, AME–ALE 0.02, PME–PME 0.11, PME–PLE 0.08, ALE–PLE 0.04. Chelicerae 0.65 long, with six promarginal teeth and six retromarginal denticles. Leg measurements: I—femur 1.25/ patella 0.5/ tibia 1.0/ metatarsus 0.75/ tarsus 0.4/ total 3.9; II—1.0/ 0.5/ 0.95/ 0.75/ 0.35/ 3.55; III—1.0/ 0.45/ 0.75/ 0.75/ 0.3/ 3.25; IV—1.5/ 0.5/ 1.15/ 1.4/ 0.5/ 5.05. Leg spination: I—tibia p0, metatarsus p0, r0; II—tibia p0, metatarsus p0, r0; III—tibia v1-1-2, p0-0-1, r0-1-1, metatarsus v2-0-2, p0-1-1; IV—tibia v1-2-2, p0-1-0, r0-1-1, metatarsus r0- 1-1. Epigynum: atrium short; lateral borders sclerotized ( Fig. 11G). Internally with long copulatory ducts; seminal receptacles next to the spermathecae, but not visible through transparency; spermathecae large, oval and close together; fertilization ducts long and curved ( Fig. 11H). Abdomen: length 2.35, epigastric furrow 0.6 from tracheal spiracle, spiracle 0.85 from base of spinnerets.

Variation. Males (n=3): total length 3.7–3.85; carapace length 1.6–1.75; femur I length 1.1–1.25. Females (n=6): total length: 3.25–4.0; carapace length 1.5–1.6; femur I length 1.0–1.25.

Other material examined. BRAZIL, Goiás: Alto Paraíso de Goiás (14°8’2.35”S; 47°30’50.38”W), 1♀, 06.VIII.1981, S. T . Amarante leg. ( IBSP 314773 ) ; Rio de Janeiro: Teresópolis (22°25’1.06”S; 42°58’32.17”W), 1♀ ( MNHN) ; São Paulo: Itirapina, Estação Ecológica de Itirapina (22°13′10″S; 47°53′54″W), 1♂, 2001–2002, Equipe Biota leg. ( IBSP 97311 ) ; Rosana, Primavera, Usina Hidrelétrica Engenheiro Sérgio Motta , (22°28’41.02”S; 52°57’29.24”W), 1♀, 01.II.2000, Equipe IBSP leg. ( IBSP 29717 ) ; Santa Catarina: Rio Negrinho (26°14’59.65”S; 49°31’5.04”W), 2♀, 2006, M.A. Nickele leg. ( IBSP 279632 ) .

Distribution. Brazil (States of Goiás, Rio de Janeiro, São Paulo and Santa Catarina) ( Fig. 12B).