Thaumasia xingu, Cruz Da Silva & Carico, 2012

Thaumasia xingu new species

Figs 1, 20, 137–143

Types. Male holotype from Altamira, Xingu river , Pará , Brazil [ 03°11’S, 52°13’W], 01-07.X.1996, P. Spangler & O. Flint ( USNM 2052863 About USNM ). Paratype: one female from Napo Province, Yasuni National Park , Ecuador [ 00°19’S, 77°48’W], VII.1996, A. I. Cognato ( CAS 9036769 About CAS ) GoogleMaps .

Etymology. The specific name is noun in apposition and refers to the type locality.

Diagnosis. The males of T. xingu sp. nov. resemble those of T. annulipes ( Fig. 52) in the bifurcated apex of the median apophysis, but can be distinguished by the acute tip of the median apophysis ( Fig. 141) and by the lamellar anterior half of the ental branch of RTA ( Fig. 143). The females resemble those of T. annulipes ( Fig. 44) in the small projection of the middle field of the epigynum ( Fig. 137), but can be distinguished by the heart-shaped middle field of the epigynum ( Fig. 137) and by the circular shape of the copulatory duct ( Fig. 138) and by the small head of spermathecae ( Fig. 138).

Description. Male ( Holotype, Pará, Brazil, USNM 2052863). Total length 8.37. Carapace 5.32 long, 5.05 wide, light brown; fovea marked. Clypeus light brown with a median irregular whitish patch, 0.82 high. Anterior eye row straight, 1.16 wide ( Fig. 20); posterior recurved, 2.01 wide. Eye diameters, interdistances, and median ocular quadrangle: AME 0.22, ALE 0.15, PME 0.28, PLE 0.31; AME-AME 0.18, AME-ALE 0.14, PME-PME 0.32, PME-PLE 0.46, OQA 0.66, OQP 0.90, OQH 0.64. Chelicerae reddish-orange, laterally depressed; with a lateral tuft of white bristles ( Fig. 20). Sternum yellow, bristly; 1.90 long, 1.99 wide. Labium dark brown, 0.66 long, 0.83 wide. Legs light brown; relative length: I-IV-II-III, I—femur 9.70/ patella-tibia 13.16/ metatarsus 8.51/ tarsus 3.85/ total 35.22; II—9.44/ 12.36/ 7.58/ 3.45/ 32.83; III—7.45/ 9.04/ 5.85/ 2.79/ 25.13; IV—9.41/ 11.57/ 8.24/ 3.99/ 33.21. Ventral pairs of macrosetae on tibiae: I-4; II-4; III-3; IV-4. Abdomen 3.99 long, light brown with two pair of sigillae. Venter yellow, with scattered bristles. Palpus with a bifurcated median apophysis ( Figs 140, 141) and with a lamellar anterior half and ventrally curved ental branch of RTA ( Figs 142, 143).

Female ( Paratype, Napo Province, Ecuador, CAS 9036769). Total length 9.70. Carapace 4.56 long, 4.15 wide, as in male. Clypeus yellow, 0.58 high. Anterior eye row straight, 1.04 wide; posterior recurved, 1.86 wide. Eye diameters, interdistances, and median ocular quadrangle: AME 0.23, ALE 0.12, PME 0.22, PLE 0.34; AME-AME 0.21, AME-ALE 0.12, PME-PME 0.36, PME-PLE 0.46, OQA 0.60, OQP 0.86, OQH 0.61. Chelicerae light brown, glabrous. Sternum yellow, 2.07 long, 2.15 wide. Labium as in male, 0.83 long, 0.74 wide. Legs yellow, unmarked; relative length: IV-I-II-III, I—femur 7.31/ patella-tibia 9.84/ metatarsus 6.38/ tarsus 3.05/ total 26.58; II—7.44/ 9.57/ 5.98/ 2.66/ 25.65; III—5.85/ 7.58/ 4.38/ 2.26/ 20.07; IV—7.98/ 9.59/ 6.91/ 3.32/ 27.80. Ventral pairs of macrosetae on tibiae: I-5; II-4; III-3; IV-4. Superior tarsal claw with eleven teeth and inferior with one tooth ( Fig. 139). Abdomen 4.73 long, colouration as in male. Epigynum with a heart-shaped middle field ( Fig. 137). Copulatory duct enlarged and distally curved ( Fig. 138); head of spermathecae small ( Fig. 138).

Material examined. ECUADOR, Pastaza: Cushueme river [ 01°37’S, 77°00’W], 2 ♀, 15-22. V.1971, B. Malkin ( FMNH); Napo: Parque Nacional Yasuni [ 00°59’S, 75°26’W], 1 ♀, VII.1996, A. I. Cognato ( CAS); Mondaña, 1 ♀, 24-28.VII.1996, A. I. Cognato ( CAS). VENEZUELA, Amazonas: Cerro de la Neblina [ 00°50’N, 66°10’W], 05.II.1985, P. M. Spangler ( USNM); Miranda: Guatopo National Park, Santa Cruzita [ 10°15’N, 66°25’W], 1 ♂, no date, J. A. Coddington ( USNM); COLOMBIA, Amazonas: Pira river [ 00°25’S, 70°15’W], 1 ♀, 07-16.II.1989, V. & B. Roth ( CAS), Leticia [ 04°11’S, 69°56’W], 1 ♂, 14-28.II.1974, S. & J. Peck ( AMNH); Vaupés: Taraira, Taraira Lake [ 01°04’S, 69°24’W], 1 ♂, II-IV.2004, J. Pinzón ( ICN). PERU, Madre de Dios: Zona Reservada de Manu, Pakitza [ 11°58’S, 71°18’W], 2 ♂, 1 ♀, 06.X.1987, D. Silva & J. A. Coddington ( USNM); San Martín, Moyobamba, Comunidad Nativa “El Dorado” [ 05°44’58.26’’S, 77°17’21.54’’W], elevation 840m, 3 ♀, 08.X.2008, W. Paredes & C. Albujar ( MUSM 505341), Yuracyacu [ 05°54’S, 77°10’W], elevation 821m, 4 ♂, 2 ♀, 13-15.IX.2008, W. Paredes & C. Albujar ( MUSM 505338, 505350), Rioja, Bajo Naranjillo [ 05°49’S, 77°20’W], elevation 853m, 1 ♂, 23–24.IX.2008, W. Paredes & C. Albujar ( MUSM 505329), Fundo Pabloyacu [ 06°04’S, 76°56’W], elevation 948m, 7 ♀, 19.IX.2008, W. Paredes & C. Albujar ( MUSM 505340, 505349), Morro Calzada [ 06°02’S, 77°03’W], elevation 960m, 4 ♀, 17.IX.2008, W. Paredes & C. Albujar ( MUSM 505319), Soritor, Caserio Paitoja [ 06°21’S, 77°04’W], elevation 1580m, 1 ♂, 31.VIII.2008, W. Paredes & C. Albujar ( MUSM 505318), Rioja Paltoja, 2 ♀, 04.XII.2008, C. Albujar ( MUSM 505332, 505334); Loreto: Maynas, Rio Nashino, 1 ♂, 25.XII.2008, R. Yawaroni ( MUSM 505316). BRAZIL, Pará: Melgaço, Caxiuanã, Estação Científica Ferreira Penna, FLONA [ 01°44’S, 51°27’W], 1 ♀, no date, unknown collector ( MPEG 15598); Altamira, Rio Xingu [ 03°39’S, 52°22’W], 1 ♂, 01-07.X.1986, P. Spangler & O. Flint ( USNM); Amazonas: Manaus, Reserva Florestal Adolpho Ducke [ 03°06’S, 60°01’W], 1 ♂, 18.I.1994, A. D. Brescovit ( MCN 25075), 1 ♂, 11.VII.1987, H. Höfer ( INPA); Manicoré, Rio Atininga [ 05°48’S, 61°18’W], 1 ♂, 2 ♀, 19.IV.1996, Equipe IBSP / SMNK ( IBSP 15437), 1 ♂, 3 ♀, 19.IV.1996, Equipe IBSP / SMNK ( IBSP 15436); Rio Atininga [ 05°49’S, 61°18’W], 1 ♀, 19.IV.1996, Equipe IBSP / SMNK ( SMNK 2063), 1 ♂, 1 ♀, 19.IV.1996, Equipe IBSP / SMNK ( SMNK 1977); Acre: Rio Branco, Reserva Extrativista de Catuaba [ 09°58’S, 67°48’W], 1 ♂, 2 ♀, 04.IV.1996, Equipe IBSP / SMNK ( IBSP 15939); Cruzeiro do Sul, Reserva Extrativista de Humaitá, 1 ♂, 2 ♀, 12.IV.1996, Equipe IBSP / SMNK ( IBSP 15707), 1 ♀, 12.IV.1996, Equipe IBSP / SMNK ( SMNK 2009); Parque Nacional da Serra do Divisor [ 07°39’S, 72°39’W], 1 ♂, 2 ♀, 19.III.1997, L. Resende & S. Vieira ( IBSP 12107); Mato Grosso: Aripuanã, Chapada Dardanelos [ 10°10’S; 59°27’W], 2 ♀, 02-13.XI.1996, G. Skuk ( MZSP 15412);Vila Murtinho, 1 ♂, 05.IV.1925, J. H. Williamson ( MCZ); Vale São Domingos, Pontes & Lacerda, Usina Hidrelétrica de Guaporé, 1 ♂, 1 ♀, X.1999, Equipe Resgate ( IBSP 41521); Mato Grosso do Sul: Nossa Senhora do Livramento, Pirizal, Pantanal de Poconé, Fazenda Retiro Novo [ 16°15’S, 56°36’W], 1 ♀, I.2004, L. D. Battirola ( IBSP 91767).

Distribution. Ecuador, Venezuela, Colombia, Peru, Brazil ( Fig. 4).