Abaycosa nanica ( Mello-Leitao , 1941) new comb.

Laborda, Alvaro, Bidegaray-Batista, Leticia, Simo, Miguel, Brescovit, Antonio Domingos, Beloso, Carolina & Piacentini, Luis Norberto, 2022, Abaycosa a new genus of South American wolf spiders (Lycosidae: Allocosinae), Arthropod Systematics & amp; Phylogeny 80, pp. 59-74 : 59

publication ID	https://dx.doi.org/10.3897/asp.80.e76339
persistent identifier	https://treatment.plazi.org/id/D2EA4218-CC97-5DDF-8A94-996AAFBF7D38
treatment provided by	Arthropod Systematics & Phylogeny by Pensoft
scientific name	Abaycosa nanica ( Mello-Leitao , 1941) new comb.
status

Treatment

3.2.2. Abaycosa nanica ( Mello-Leitao, 1941) new comb. View in CoL

Figs 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4 , 5 View Figure 5 , 6 View Figure 6 ; 8 View Figure 8 ; 10 View Figure 10

Pardosa nanica Mello-Leitão, 1941: 209, figs. 11-12. Female holotype from Calchaquí, Santa Fé, Argentina (MLP 15100), examined.

Pardosa flammula Mello-Leitão, 1945: 251, fig. 34. Male holotype from Rosario del Tala, Entre Ríos, Argentina (MLP 16520), examined. Syn. n.

Diagnosis.

Abaycosa nanica resembles Abaycosa paraguensis in the coloration Spination pattern and the presence of only one distal macrosetae on the tip of the male cymbium. Males can be recognized by the basal branch of the median apophysis curved apically (Figs 3E, F View Figure 3 ; 6B View Figure 6 ) and females by the separated copulatory openings (Figs 3C View Figure 3 ; 8B View Figure 8 ), that are almost touching on the middle in A. paraguensis (Figs 3D View Figure 3 ; 9B View Figure 9 ).

Synonymy.

After comparing the type of P. flammula with several specimens of A. nanica collected together in pitfall traps, we did not find morphological differences in the male genital features of both species.

Description.

Male (MACN-Ar 41946). Dorsal shield of prosoma dark brown with an irregular paler median band. Sternum, and coxae II-IV yellowish brown with coxa I, labium and endites darker. Chelicerae dark brown, covered with brown bristles. Opisthosoma light brown with two dark brown bands, a brown lanceolate mark in the cardiac area with a dark brown outline and a Spination pattern of light and dark spots posterior to the cardiac mark. Venter brownish yellow with two middle dark lines; spinnerets brownish yellow. Legs, femora almost entirely dark brown, femora I-II with a distal pale ring, III-IV with a basal pale ring. The other segments of leg I-II brownish yellow, except tibia II, which has a basal dark brown ring. In legs III-IV the other segments have dark areas (Figs 4A View Figure 4 ; 5A, B View Figure 5 ). Leg formula IV> I> III> II. Bulb with a median apophysis transverse, bifid, with an apical branch ventrally curved and the basal branch apically curved (Figs 3E, F View Figure 3 ; 6B View Figure 6 ). Median apophysis with a dorsal channel that ends on the basal branch (Fig. 3F View Figure 3 ; 6C View Figure 6 ). Sierwald conductor long and triangular (Fig. 6C View Figure 6 ). Embolus curved and slender, almost perpendicular to the longitudinal axis of the bulb, resting on the dorsal projection of the MA. Distal part of the bulb with a terminal apophysis beaklike, pointing retrolaterally and a hooked projection on the retrolateral side (Fig. 6C, F View Figure 6 ). - Spination pattern : femur I p 0-0-d1, d 1-1-1, II p 0-0-d1, d 1-1-1, III p 0-1-1, d 1-1-1ap, r 0-1-1, IV p 0-0-d1, d 1-1-1, r 0-0-d1; patella III p 1, r 1, IV p 1, r 1; tibia I p 1-1, v 2-2-2ap, II p d1-d1, v r1-r1-2ap, III p 1-1, d 1, r 1-1, v p1-p1-2ap, IV p 1-1, d 1, r 1-1, v p1-2-2ap; metatarsus I p 0-d1-1ap, r 0-0-1ap, v 2-2-2ap, II p 0-d1-1ap, r 0-0-2ap, v 2-2-3ap, III p d1-d1-1ap, r 1-1-2ap, v 2-2-3ap, IV p d1-d1-1ap, r d1-d1-1ap, v 2-2-3ap.

Female (MACN-Ar 41946). Coloration as in male, except by the legs, lighter, brownish yellow with dark spots. Venter of abdomen without dark marks (Figs 4B View Figure 4 ; 5C, D View Figure 5 ). Leg formula IV> I> III> II. Epigyne: square flat plate, densely covered by setae. Copulatory openings situated on the posterior margin of the epyginal plate (Figs 3A View Figure 3 , 8A View Figure 8 ). In dorsal view, spermathecae with a short stalk and triangular heads; vulval chambers located ventrally to base of spermathecae, rounded and smaller than the spermathecae head (Figs 3C View Figure 3 ; 8B View Figure 8 ). - Spination pattern : femur I p 0-0-d1, d 1-1-1, II p 0-0-d1, d 1-1-1, III p 0-1-1, d 1-1-1ap, r 0-0-1, IV p 0-0-d1, d 1-1-1, r 0-0-d1; patella III p 1, r 1, IV p 1, r 1; tibia I p d1-1, v 2-2-p1ap, II p d1-1, v r1-r1-p1ap, III p 1-1, d 1, r 1-1, v p1-2ap, IV p 1-1, d 0-1, r 1-1, v p1-2-2ap; metatarsus I p 2-2-2ap, r 0-0-1ap, v 2-2-3ap, II p 1-1-1ap, r 0-0-2ap, v 2-2-3ap, III p 1-1-1ap, r 1-1-2ap, v 2-2-3ap, IV p 1-1-1ap, r 1-1-1ap, v 2-2-3ap.

Measurements.

Male, MACN-Ar 41946 (Female, MACN-Ar 41946): TL 3.20 (4.66), CL 1.93 (2.30), CW 1.27 (1.63), CH 0.60 (0.67), AL 1.47 (2.33). Eyes: AME 0.07 (0.07), ALE 0.06 (0.08), PME 0.16 (0.18), PLE 0.11 (0.10). Row of eyes: AER 0.33 (0.37), PMR 0.57 (0.50), PLR 0.56 (0.58). Sternum (length/width) 0.5/0.33 (0.58/0.47). Labium (length/width) 0.19/0.28 (0.23/0.30). Legs: length of segments (femur + patella/tibia + metatarsus + tarsus = total length): I 1.33 + 1.53 + 0.90 + 0.60 = 4.36, II 1.20 + 1.33 + 0.83 + 0.63 = 3.99, III 1.17 + 1.33 + 0.97 + 0.57 = 4.04, IV 1.87 + 2.03 + 1.73 + 0.80 = 6.43, (I 1.03 + 1.33 + 0.87 + 0.57 = 3.80, II 1.00 + 1.10 + 0.80 + 0.53 = 3.43, III 1.00 + 1.10 + 0.87 + 0.50 = 3.47, IV 1.40 + 1.60 + 1.37 + 0.67 = 5.04).

Variation.

Male (Female) (range, mean ± s.d.): TL 3.06-4.39, 3.71 ± 0.47; CL 1.67-2.30, 2.00 ± 0.17; CW 1.17-1.60, 1.39 ± 0.14; n = 10 (TL 3.99-6.38, 4.93 ± 0.86; CL 2.00-2.60, 2.28 ± 0.18; CW 1.40-1.80, 1.63 ± 0.15; n = 10).

Distribution.

Known from north Paraguay, south of Bolivia and Brazil, north Argentina and Uruguay (Fig. 10A View Figure 10 ).

Natural history.

Most of the specimens were recorded in different open environments such as grasslands or savannas and in anthropized environments in the Pampas and Chaco provinces and scarce records from Atlantic and Paraná provinces. Adults of this species were collected with pitfall traps across the year in several surveys in Argentina ( Argañaraz et al. 2020; Pinto et al. 2021; Zapata and Grismado 2015) and Uruguay (information based on collection data) which suggest that they are active hunters.

Other material examined.

BOLIVIA: Chuquisaca: Tomina: Padilla, Comunidad de Pedernal (19.308893, 64.302679), Izquierdo, M.A., 6-9.x.2011, hand collecting, 1♂ (MACN-Ar 41955). BRAZIL: Mato Grosso do Sul: Anaurilândia [22.184613, 52.718966], Cunha, F.S. and Souza, C.R., 05-11.iii.2001, 1♀ (IBSP 53367). Minas Gerais: Belo Horizonte [19.865775, 43.967055], Campus da UFMG, Santos, A.J., 05.iii.2007, 1♂ (IBSP 72966). São Paulo: Campinas [22.817700, 47.065180], Campus da Unicamp, Santos, A.J., 27.i.2007, 1♂ (IBSP 72973); São Paulo [23.567766, 46.721247], Campus IBSP, Ruiz, 01.xii.2004, 1♂ (IBSP 56953). Rio Grande do Sul: Santana do Livramento [30.811497, 55.548147], Cerro Verde, Dias, J.A., 03-09.xi.2006, 68♂ 6♀ 1 immature (IBSP 79898); Eldorado Do Sul [29.998491, 51.309950], 01.v.1996, 5♂ 2♀ (PUCRS 12580); Sao Borja, Reserva Sao Donato [29.019722, 56.173055], 11.x.2012, 5♂ 2♀ (PUCRS 37021); same data, 11.x.2012, 10♂ 5♀ (PUCRS 37019); same data, 4♂ 15♀ (PUCRS 37009); same data, 2♂ 2♀ (PUCRS 37008); same data, 4♂ 9♀ (PUCRS 36989); same data, 2♂ 4♀ (PUCRS 36987); same data, 6♂ 2♀ (PUCRS 36981); same data, 1♂ 1♀ (PUCRS 36976); same data, 2♂ 9♀ (PUCRS 36973); same data, 2♂ 10♀ (PUCRS 36968); same data, 7♂ 1♀ (PUCRS 36961); same data, 6♂ 7♀ (PUCRS 36960); same locality, 10.vii.2012, 14♂ 7♀ (PUCRS 36241); same data, 9♂ 3♀ (PUCRS 36240); same locality, 10.v.2012, 1♀ (PUCRS 36138); same data, 1♂ 2♀ (PUCRS 36129); same locality, 20.i.2012, 1♂ (PUCRS 34616); same data, 2♂ 3♀ (PUCRS 34610); same data, 2♂ 4♀ (PUCRS 34603); same data, 3♂ (PUCRS 34584); same data, 7♂ 1♀ (PUCRS 34582); same data, 11♂ 5♀ (PUCRS 34542); same data, 2♂ 1♀ (PUCRS 34538). PARAGUAY: Alto Paraguay; Puerto Casado [22.286010, 57.941824], Cranwel, J.A. and Giai, A., vii.1944, 1♀ 1 immature (MACN-Ar 1643). ARGENTINA: Tucumán: Horco Molle [26.793008, 65.317438], Galiano, M.E. x.1963, 2♀ (MACN-Ar 41657). Santa Fe: Vera: Estancia Las Gamas, 16,5 km by air W de Vera (29.44134, 60.38455), Ramírez, M., Grismado, C., Piacentini, L. and González Márquez, M., 20-24.iii.2014, hand collecting, 1♂ (MACN-Ar 32215); same locality and collectors, around the houses (29.42363, 60.38105), hand collecting, 1♂ (MACN-Ar 41975); same data 1♂ (MACN-Ar 41658); same locality, date and collectors, Chacoan humid forest, hand collecting, 1♂ (MACN-Ar 32215); Las Colonias: Tambo, 15 Km N of Esperanza, near to Salado river [31.3137012, 60.930366], Sarquis, J.A., 4.xi.2011, pitfall trap, 2 days active, 7♂ 4♀ (MACN-Ar 35265); same data, 1♂ (MACN-Ar 35213); same locality and collector, 1♂ (MACN-Ar 35266); same data, 8.xii.2011, 1♂ (MACN-Ar 35274); same data, 1♀ (MACN-Ar 35276); same locality and collectors, 20.vii.2011, 4♂ (MACN-Ar 35279); same data, 1♀ (MACN-Ar 35272). Córdoba: Alta Gracia (31.655452, 64.431918), Botero Trujillo, R. & Izquierdo, M., 22.i.2016, 1♂ (MACN-Ar 35792); same data, 1♀ (MACN-Ar 35792); Calamuchita [32.273838, 64.626038], Viana, iii.1953, 1♂ (MACN-Ar 41659); Cruz del Eje, El Tropezón (30.636676, 64.879609), Castellarini, F., 01.ii.2013, pirfall trap, 1♂ (MACN-Ar 41660); same data (30.640316, 64.858404), 1♀ (MACN-Ar 41661); same data, 6♂ (MACN-Ar 41663); same data (30.645217, 64.870217), 3♂ (MACN-Ar 41662); Cruz del Eje, Tuclame (30.743055, 65.248499), Castellarini, F., 01.ii.2011, pirfall, 3♂ 2♀ (MACN-Ar 41665); same data (30.726749, 65.262802), 1♂ 1 immature (MACN-Ar 41666); same data, 3♂ (MACN-Ar 41664); Media Naranja (30.639717, 64.875800), Castellarini, F., 01.ii.2012, pirfall trap, 1♂ (MACN-Ar 41667). Corrientes: San Roque, in the way to Colonia Pando [28.522597, 58.660742], López-Carrión, N., 2.xi.2019, hand collecting, 1♀ (MACN-Ar 41983). Entre Ríos: Departamento Colón, Parque Nacional El Palmar (31.866538, 58.208497) elev. 21m, Ramírez, M. and MACN-Ar team, 07.viii.2011, near to historic site La Calera del Palmar, sand beach on the Río Uruguay, night collecting. 1♂ (MACN-Ar 31122). Buenos Aires: Atucha (33.971180, 59.200038), Ramírez, M., 08.ix.1989, 1♀ (MACN-Ar 41668); same data, 1♂ (MACN-Ar 41669); Bella Vista [34.563363, 58.691436], ii.1979, 1♀ (MACN-Ar 41670); Campana, Reserva Natural Otamendi, Río Luján railroad station (34.277352, 58.888052) alt. 5m, Ramírez, M., Grismado, C., Piacentini, L., Soto, E., Gonzáles Márquez, M.E., Guala, M., Andia Navarro, J.M., López, N., Ortega Insaurralde, I., Zermoglio, P., 09.ix.2010, in grassland and wetlands, 1♂ (MACN-Ar 28814); same locality (34.278722, 58.887833) alt. 6m, Grismado, C., Damer, L., López, N., Trivero, S., Grismado, A., 03-17.ii.2007, on grassland of "pelo de chancho" ( Distichlis sp .), pitfall trap, 1♂ (MACN-Ar 12124); same locality, Grismado, C. and Grismado, A., 18.ii-06.iii.2007, 1♂ (MACN-Ar 12208); same data 1♂ (MACN-Ar 12208); same locality, Sendero Guardianes de la Barranca [34.230759, 58.894898], Grismado, C., Damer, L., López, N., Trivero, S. and Grismado, A., 3.ii.2007, 1♂ (MACN-Ar 12124); same locality (34.278017, 58.890346), Ramírez, M. and MACN-Ar team, 9.ix.2011, hand collecting, 1♂ (MACN-Ar 28814); San Fernando: Delta del Paraná, 3ra sección, Río Barca Grande y Arroyo Barquita [34.435679, 58.537776], Zapata, L. and Grismado, C., 24-26.i.2012, 1♂ 1♀ 1 immature (MACN-Ar 31197); Luján: Open Door [34.494851, 59.068501], Piacentini, L., 1.i.2005, hand collecting, 2♂ 3♀ (MACN-Ar 41946); San Pedro: Parque Histórico Natural Vuelta de Obligado [33.598256, 59.809827], López-Carrión, N. and Olejnik, N., 10.i.2009, hand collecting during day, 1♀ (MACN-Ar 36908); same data, hand collecting in camalotes, 1♂ 1♀ (MACN-Ar 36901); same locality and collectors, at the foot of the slope, 11.x.2009, hand collecting during day, 1♂ (MACN-Ar 36910). Catamarca: El Rodeo [28.208697, 65.876588], 16-23.i.1977, 1♂ (MACN-Ar 41671). Ciudad Autónoma de Buenos Aires: Reserva Ecológica Costanera Sur (34.604583, 58.350083), Turienzo, P., 13.x.2008, forest of Tessaria integrifolia ; pitfall trap, 1♂ (MACN-Ar 38980); same locality and date, Mamani, A., pitfall trap, 1♂ (MACN-Ar 38980); Reserva Ecológica Costanera Sur, Laguna de los Macáes (34.606027, 58.348611), Mamani, Turienzo and Zapata, 19.i.2009, pitfall trap, 1♂ (MACN-Ar 39015); same data 1♂ (MACN-Ar 39015). URUGUAY: San José: Balneario Kiyú [34.696922, 56.755091], Laborda, A., 14.xii.2012, hand collecting, 1♂ (FCE-Ar 3901). Maldonado: Cerro Pan de Azucar (-34.810291, -55.259097), Ramírez, M., 25.i.2014, 1♂ (MACN-Ar 31191); Piriápolis (34.864363, 55.271627), Ramírez, M., 15.i-14.ii.2014, 1♂ (MACN-Ar 31392); same data, 1♀ (MACN-Ar 31391). Río Negro: Esteros de Farrapos, near to San Javier [32.686886, 58.124233], Laborda, A., 12.iii.2018, in blanqueal, 5♂ 11♀ (FCE-Ar 10131). Salto: Horacio Quiroga [31.272783, 57.922255], Vazquez, V., 05.vii.1996, at a trunk of Ceibo ( Erythrina crista-galli ), 1♀ (FCE-Ar 982). Canelones: INIA, Las Brujas [34.663019, 56.336322], Simó y col., 22.iii.2005, pitfall trap, 1♀ (FCE-Ar 3317); same data, 1♀ (FCE-Ar 3336); same locality and collectors, 12.i.2005, in pitfall trap in artificial grassland, 1♂ (FCE-Ar 2089); same locality and collectors, 07.x.2004, 1♂ (FCE-Ar 1074); same data, 1♀ (FCE-Ar 1078); same locality and collectors, 22.iii.2005, in pitfall trap, 1♂ 1 immature (FCE-Ar 3265); same locality and collectors, 07.x.2004, 1♂ (FCE-Ar 2787); same locality and collectors, 09.xi.2004, 1♀ (FCE-Ar 1506); same locality and collectors, 27.xii.2004, 1♀ (FCE-Ar 1776); same locality and collectors, 12.i.2005, 2♂ 1 immature (FCE-Ar 2076); same data, 1♀ (FCE-Ar 2096); same locality and collectors, 23.x.2004, in pitfall trap on Eucalyptus forest, 1♀ (FCE-Ar 1360); same locality and collectors, 23.x.2004, in pitfall trap on Eucalyptus forest, 2♂ 1 immature (FCE-Ar 1191); same locality and collectors, 21.ix.2004, in pitfall trap in artificial grassland, 2♂ 2♀ (FCE-Ar 2788); same data, 1♂ (FCE-Ar 2786); same locality and collectors, 07.iii.2005, in pitfall trap in artificial grassland, 1♀ (FCE-Ar 2670); Marindia [34.777636, 55.815147], Costa, F., 08.x.1998, pitfall trap, 1♂ (FCE-Ar 2735); same data, 1♂ (FCE-Ar 2733); same data, 1♀ (FCE-Ar 2714); same locality and collectors, viii.2014, hand collecting, 1♂ 1♀ (FCE-Ar 5926); same locality and collectors, pitfall trap, 1♀ (FCE-Ar 2734). Montevideo: Melilla [34.731994, 56.322544], Hagopián, D., i-ii.2018, in pool filter, 9♂ 6♀ (FCE-Ar 10132); Paso de la arena [34.820255, 56.318936], Simó, M., Pérez-Miles, F. and Viera, C., iii.1996, 1♂ (FCE-Ar 7946). Treinta y Tres: Quebrada de los Cuervos [32.923577, 54.458077], Sección Entomología, ii.1990, 3♂ (FCE-Ar 4706). Paysandú: Río Queguay, Rincón de Pérez, Estancia Loma del Queguay [32.102322, 57.446752], Laborda, A., 18.iii.2010, in grassland, hand collecting, 1♀ (FCE-Ar 4823). Río Negro: Ruta 24, km 85, Estancia "Las Cadenas" [32.529027, 58.038194], Hagopián, D., 13.iii.2018, in Blanqueal zone, 1♂ (FCE-Ar 10133).