Allocosa marindia
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BibTeX: @article{Simó2017Zootaxa4216, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Simó2017Zootaxa4216">{{Citation |
Ordo: Araneae
Familia: Lycosidae
Genus: Allocosa
Name
Allocosa marindia Simó, Miguel, 2017 – Wikispecies link – Pensoft Profile
- Allocosa marindia Simó, Miguel, 2017, Zootaxa 4216: 263-264.
Materials Examined
Uruguay Canelones A. Aisenberg Uruguay Two E. Alvares & M. Simo Other J. A. M. Pinto Uruguay Lagomar M. Simo & M. Viglioni Uruguay Lagomar M. Simo Uruguay Lagomar M. Simo & M. Viglioni Uruguay Lagomar M. Simo & M. Viglioni Uruguay Lagomar M. Simo & M. Viglioni Uruguay Lagomar M. Simo & M. Viglioni Uruguay Lagomar F. Costa Uruguay Playa Pascual M. Simo Uruguay Playa Carrasco M. Simo Uruguay Rocha M. Simo & Barra & Coronilla
Diagnosis
Diagnosis. Females of A. marindia sp. nov. resembles A. alticeps by the presence of vulval chambers laterally projected, but differs by the more developed lateral pointed projections on the posterior margin of the epigynum (Figs 1 E–F). Males differ from the same species by the terminal apophysis flattened and truncated at the apex (Fig. 6 D).
Description
Description. Male (Holotype FCE Ar 4760). Body densely covered with setae. Carapace beige with two brown longitudinal lines and cephalic area high. Ocular edges dark brown and ocular area brownish. Thoracic grooves narrow and dark. Chelicerae dark brown. Clypeus brownish with four median setae. Labium dark brown with truncated apex. Endites dark brown, convergent, with rounded apex. Sternum beige with darker edges, acuminate posteriorly. Legs yellowish. Opisthosoma yellowish, with conspicuous brown cardiac mark and posterior brown spots; laterally and ventrally yellowish. Spinnerets yellow, densely covered with dark setae. Anterior lateral spinnerets longer than the others. Total length 8.90. Carapace 4.30 long, 4.70 wide. Clypeus 0.20 high. Eye diameters and interdistances AME 0.20, ALE 0.15, PME 0.35, PLE 0.30, AME–AME 0.10, AME–ALE 0.05, PME–PME 0.30, PME–PLE 0.40, PLE–PLE 0.75. Chelicerae 2.30 long, with three promarginal teeth, the median the largest, and three retromarginal teeth, increasing in length from basal to apical. Opisthosoma 4.7 long, 3.5 wide. Leg formula IV/I/III/II; segment length: I femur 3.10/patella 1.50/tibia 2.70/ metatarsus 2.20/ tarsus 1.40/ total 10.90. II 2.70/1.40/2.30/2.10/1.20/9.70. III 3.0/1.30/2.0/2.20/1.40/9.90. IV 3.50/1.60/3.20/3.0/1.60/12.9. Leg spination: I, femur p1ap, d1-1-1, r1-1ap; patella p1; tibia p1-1, r1-1, v2-2 -2; metatarsus p1-1-2, r1-1-2, v2-2 - 1. II, femur p1-1, d1-1-1, r1-1; patella p1; tibia p1-1, r1, v1-1 -2; metatarsus p1-1-2, r1-1-2, v2-2 - 1. III, femur p1-1, d1-1- 1, r1-1; patella p1, r1; tibia p1-1, d1, r1-1, v2-1 -2; metatarsus p 1-1-2, r1-1-2, v2-2 - 1. IV, femur p1ap, d1-1-1, r1-1; patella p1, r1; tibia p1-1, d1, r1-1, v2-1 -2; metatarsus p1-1-2, r1-1-2, v3-2 -1. Palpus: cymbium brownish, elongated, with two short and thick apical macrosetae. Terminal apophysis flattened, median apophysis with two curved projections (Figs 1 A–D, 5A–B). Female (Paratype FCE Ar 4722). As in male except for the following: chelicerae brown. Clypeus beige with four median setae. Total length 9.40. Carapace 4.10 long, 2.90 wide. Clypeus 0.10 high. Eye diameters and interdistances AME 0.20, ALE 0.15, PME 0.40, PLE 0.30, AME–AME 0.10, AME–ALE 0.05, PME–PME 0.3, PME–PLE 0.35, PLE–PLE 0.65. Chelicerae 2.0 long, with three promarginal teeth, the median the largest, and three retromarginal teeth, increasing in length from basal to apical. Opisthosoma 5.50 long, 3.8 wide. Leg formula IV/I/II/III; segment length: I femur 2.9/patella 1.40/tibia 2.30/ metatarsus 1.90/ tarsus 1.30/total 9.80. II 2.60/1.30/ 2.0/1.90/1.20/9.0 III 2.50/1.20/1.90/2.0/1.20/8.80. IV 3.20/1.60/2.70/2.90/1.60/12.0. Leg spination: I, femur p1ap, d1-1-1, r1-1; patella p1; tibia p1-1, r1-1, v2-2 -2; metatarsus p1-1-2, r1-1-2, v 2-2 - 1. II, femur p1-1, d1-1-1, r1-1; patella p1; tibia p1-1, r1, v2-1 -2; metatarsus p1-1-2, r1-1-2, v2-2 - 1. III, femur d1-1-1, p1-1, r1-1; patella p1, r1; tibia p1-1, d1, r1-1, v2-1 -2; metatarsus p1-1-2, r1-1-2, v2-2 - 1. IV, femur p1-1, d1-1-1, r1ap; patella p1, r1; tibia p1- 1, r1-1, v2-2 -2; metatarsus p1-1-2, r1-1-2, v3-2 -1. Palpus with conspicuous prolateral macrosetae on the patella, tibia and tarsus. Tarsal claw pectinated and well developed. Epigynum rather flat, with a setaceous plate. Copulatory openings small, situated laterally on the posterior margin of the epyginal plate (Figs 1 E, 6A). Fertilization ducts curved and directed medially. Head of the spermathecae slightly rounded, with an apical proyection (Figs 1 F, 6B). Variation. Measurements, males (n=5): carapace length, 5.1–4.0; carapace width, 3.7–2.8; femur I length, 4.0– 2.9. Females (n=5): carapace length, 4.7–3.7; carapace width, 3.2–2.9; femur I length, 3.5–2.7.
Etymology
Etymology. The specific epithet is a noun in apposition taken from the type locality, where, for a long time, several studies on Uruguayan wolf spiders have been developed. Natural History. Several behavioural and ecological studies were developed on this species, which was identified as Allocosa alticeps. Allocosa marindia sp. nov. is simpatric and synchronic with A. senex, but present developmental and behavioural differences that result in reproductive isolation from the other species (Costa 1995; Costa et al. 2006). Females and males construct burrows in the sand and the species show sex roles and sexual size dimorphism reversal (Aisenberg & Costa 2008; Aisenberg & González 2011; Aisenberg 2014; Lerette et al. 2015). As reported for A. senex, males produce volatile pheromones (Aisenberg et al. 2010a) and sexual dimorphism on chelicerae, forelegs and palpal traits has been reported (Aisenberg et al. 2010b). The species lives in sandy coast (Costa 2014; Costa & Simó 2014; Aisenberg et al. 2011b) and is mainly found in areas more densely covered by psammophile vegetation, compared to A. senex (M. Simó, pers. obs.). The diet is varied, including mainly other spiders, Diptera and Hymenoptera and predation by A. senex was reported (Aisenberg et al. 2009).
Distribution
Distribution. Southern Uruguay and coastal Rio Grande do Sul, Brazil (Fig. 9).
Taxon Treatment
- Simó, Miguel; Lise, Arno A.; Pompozzi, Gabriel; Laborda, Álvaro; 2017: On the taxonomy of southern South American species of the wolf spider genus Allocosa (Araneae: Lycosidae: Allocosinae), Zootaxa 4216: 263-264. doi
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