Thaumasia abrahami Mello-Leitao 1948
Creators: name: Cruz Da Silva, Estevam L.
name: Carico, James E.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Chromista
Ochrophyta
Phaeophyceae
Fucales
Fucaceae
Thaumasia
Thaumasia abrahami

description: Thaumasia abrahami Mello-Leitão, 1948   
Figs 3, 14, 80–87  
 Thaumasia abrahami Mello-Leitão, 1948: 152, fig. 1, female holotype from Yawakuri river, Upper Demerara-Berbice Guyana [05°18’N, 58°22’W], July 1919, A. A. Abraham leg., deposited in BMNH (examined).   
 Note. The match between males and females was made after the examination of the female holotype, since many males and females were found together in the same vial in some Brazilian collections.   
 Diagnosis. The females of T. abrahami resemble those of T. onca sp. nov. (Fig. 107) and T. hirsutochela sp. nov. (Fig. 107) in the general shape of the middle field (Fig. 80), but can be distinguished by “hood-like” shape of the middle field (Fig. 80), by the conspicuous hood (Fig. 80) and by the shape and the projected pores on the head of spermathecae (Figs 81, 82). The males resemble those of T. caxiuana sp. nov. in the shape of the apex of the median apophysis (Fig. 89), but can be distinguished by the slightly longer median apophysis (Fig. 84) and by the longer and triangular shape of the ectal branch of RTA (Figs 85–87).   
 Description. Female (Holotype, Guyana, BMNH). Total length 9.44. Carapace 3.81 long, 3.32 wide, yellow; unmarked. Clypeus yellow, 0.51 high. Anterior eye row straight, 0.98 wide; posterior recurved, 1.22 wide. Eye diameters, interdistances, and median ocular quadrangle: AME 0.14, ALE 0.12, PME 0.22, PLE 0.16; AME-AME 0.14, AME-ALE 0.21, PME-PME 0.24, PME-PLE 0.20, OQA 0.46, OQP 0.64, OQH 0.44. Chelicerae yellow. Sternum yellow, with scattered bristles; 1.82 long, 1.90 wide. Labium yellow, 0.40 long, 0.55 wide. Legs yellow, unmarked, with numerous dark brown macrosetae; relative length: I-II-IV-III, I—femur 6.72/ patella-tibia 9.57/ metatarsus 6.78/ tarsus 2.52/ total 25.59; II—7.05/ 9.31/ 6.65/ 2.50/ 25.51; III—5.81/ 7.04/ 5.05/ 1.99/ 19.89; IV—6.73/ 8.11/ 6.74/ 2.65/ 24.23. Ventral pairs of macrosetae on tibiae: I-5; II-5; III-4; IV-4. Superior tarsal claw with ten teeth, median with one tooth (Fig. 83). Abdomen 4.64 long, light brown with an irregular dark brown patch on cardiac area; with scattered bristles and two pair of sigillae. Venter yellow, with scattered bristles. Epigynum with a well developed “hood-like” middle field (Fig. 78) and an acute posterior margin (Fig. 80). Head of spermathecae with slightly projected pores (Fig. 82) and short copulatory ducts (Fig. 81).   
Male (Una, Bahia, Brazil, IBSP 47144). Total length 8.13. Carapace 3.81 long, 3.32 wide, as in female. Clypeus yellow, 0.40 high. Anterior eye row straight, 0.98 wide (Fig. 14); posterior recurved, 1.20 wide. Eye diameters, interdistances, and median ocular quadrangle: AME 0.22, ALE 0.12, PME 0.20, PLE 0.18; AME-AME 0.10, AME-ALE 0.14, PME-PME 0.20, PME-PLE 0.22, OQA 0.52, OQP 0.62, OQH 0.51. Chelicerae yellow, with scattered white bristles (Fig. 14). Sternum yellow, 1.82 long, 1.90 wide. Labium as in female, 0.33 long, 0.66 wide. Legs yellow, unmarked; relative length: I-II-IV-III, I—femur 8.77/ patella-tibia 12.23/ metatarsus 9.70/ tarsus 3.19/ total 33.89; II—8.64/ 11.30/ 8.40/ 2.92/ 31.26; III—6.65/ 7.98/ 5.98/ 2.26/ 22.87; IV—7.98/ 9.97/ 8.77/ 3.30/ 30.02. Ventral pairs of macrosetae on tibiae: I-5; II-5; III-4; IV-4. Abdomen 4.06 long, colouration as in female. Palpus with a rounded apex of the median apophysis (Fig. 84); distal tegular projection short (Fig. 84). Ental branch of RTA with a slender and ventrally curved tip (Figs 85, 86); ectal branch of RTA with a subtriangular shape and a broad base (Fig. 87).  
 Material examined. LESSER ANTILLES, Grenada: Gran Etang [12°10’N, 61°41’W], 1 ♂, XI.1919, R. Thaxter (MCZ). HONDURAS: Lancetilla [15°40’N, 87°25’W], 1 ♀, 20.VII.1929, no collector (MCZ). COSTA RICA: Puntarenas Province [09°12’N, 83°20’W], 1 ♀, XII.1987, W. Eberhard (MCZ). COLOMBIA, Putumayo: Rio Putumayo, Pto. Asis [00°26’N, 75°32’W], 1 ♂, no date, W. Eberhard (MCZ 91200). VENEZUELA, Amazonas: Cerro de la Neblina [00°50’N, 66°10’W], 1 ♂, 21-28.II.1985, P. M. Spangler et al. (USNM), Alto Mavaca, Rio Mavaca [02°30’N, 65°07’W], 1 ♀, 31.I.1989, D. A. Polhemus (USNM). ECUADOR, Napo [01°00’S, 77°25’W], 1 ♂, XI.1994, V. Roth (CAS), Selva Aliñahuí, 2 ♂, 5 ♀, I-II.1991, E. S. Ross (CAS); Oriente, Bomboimi-Yacu, 1 ♀, IV.1941, W. M. Larke-Macintyre (AMNH). BOLIVIA, Beni: Chacobo, Indian Village, Rio Benicito [14°23’S, 65°06’W], 1 ♀, 05.VIII.1960, B. Malkin (AMNH). PERU, Junin: La Merced, Colonia Perene, Perene river [11°03’S, 75°20’W], 1 ♂, 03.I.1995, E. S. Ross & E. I. Schlinger (CAS); Loreto: Aquaitia [04°14’S, 74°13’W], 1 ♂, 19 ♀, 01-02.IX.1946, F. Woytkowski (AMNH); San Martin: Moyobamba, Mishqui-Yacu [06°01’S, 76°58’W], 1 ♂, 2 ♀, 16-24.VIII.1947, F. Woytkowski (AMNH), 1 ♂, 09-21.III.1947, F. Woytkowski (AMNH), Morro Calzada [06°01’S, 77°02’W], elevation 879m, 1 ♂, 17.IX.2008, W. Paredes & C. Albujar (MUSM 505314). BRAZIL, Pará: Rio Gurupi [02°06’S, 46°23’W], 1 ♂, VI.1963, B. Malkin (MZSP 3310); Canindé, Rio Gurupi, 1 ♂, 27, 28.II.1966, B. Malkin (AMNH); Marabá, Mina do Sossego, Serra Norte, Carajás [06º27’S, 50º05’W], 1 ♂, 23. II- 06.III.2004, D. R. Santos-Souza (MPEG 4114); Novo Progresso, Campo de Provas Brigadeiro Velloso, Serra do Cachimbo [09º17’S, 54º57’W], 1 ♀, 12.IX.2003, D. R. Santos-Souza (MPEG 6154); Maranhão: Caxias, Reserva Ecológica Inhamum [04º52’S, 43º20’W], 2 ♂, 11.III.2006, F. Limeira-de-Oliveira (IBSP 117247). Amazonas: Manaus, Reserva Florestal Adolpho Ducke [03°05’S, 60°00’W], 1 ♂, 2 ♀, 18.I.1994, A. D. Brescovit (MCN 25121), 2 ♂, 2 ♀, 18-25.II.1992, A. D. Brescovit (MCN 22060), 1 ♂, 18.I.1994, A. D. Brescovit (EX-MCN 25075); Ilha da Marchantaria, 2 ♀, VIII.1999, A. J. Santos (IBSP 39934); Fazenda Dimona, 1 ♀, VII.2006, A. J. Santos (IBSP 80032), Reserva Km 41, 1 ♀, VIII.2005, A. J. Santos (IBSP 57567); Novo Airão, Parque Nacional do Jaú [03°05’S, 60°00’W], 1 ♀, VI.2000, E. M. Venticinque (IBSP 37766); Acre: Rio Branco, Reserva Extrativista Humaitá [09°58’S, 67°48’W], 2 ♀, 12.IV.1996. Equipe IBSP / SMNK (IBSP 15737), Reserva Extrativista de Catuaba, 2 ♀, 09.IV.1996, Equipe IBSP / SMNK (IBSP 15921); Senador Guiomard, Reserva Extrativista de Catuaba [10°08’S, 67°43’W], 1 ♀, 2002, E. F. Morato (IBSP 97355); Parque Nacional da Serra do Divisor, 1 ♂, 14.III.1997, L. Resende & S. Vieira (IBSP 12319), 1 ♂, 2 ♀, 20.III.1997, L. Resende & S. Vieira (IBSP 12253). Roraima: Costa Marques [02°48’N, 60°40’W], 1 ♀, 17-18.I.2002, E. Ramires (IBSP 36948); Goiás: São Domingos, Caverna Passa Três, Parque Estadual de Terra Ronca [12°23’S, 46°19’W], 2 ♂, 3 ♀, 03- 05.IX.2000, C. A. Rheims (IBSP 26084); Tocantins: Palmas, Rio Tocantins [10°10’S, 48°19’W], 2 ♀, I.2002, D. M. Cândido & M. Costa (IBSP 40407), Usina Hidrelétrica Luís Eduardo Magalhães, 1 ♀, 12.I.2002, D. M. Cândido & M. Costa (IBSP 40601); Sergipe: Serra de Itabaiana, Riacho Coqueiro [10°44’S, 37°19’W], 1 ♂, 08.X.2002, S. C. Dias (IBSP 37062); Bahia: Una, Reserva Biológica de Una [15°16’S, 39°04’W], 1 ♂, 15- 28.XI.2000, A. D. Brescovit (IBSP 47144), 1 ♀, 15-28.XI.2000, A. D. Brescovit (IBSP 47340), 1 ♂, 15- 28.XI.2000, A. D. Brescovit (IBSP 45519), 1 ♂, 15-28.XI.2000, A. D. Brescovit et al. (IBSP 47344).   
 Distribution. Lesser Antilles, Honduras, Costa Rica, Colombia, Venezuela, Ecuador, Bolivia, Peru, Brazil (Fig. 3).
description: Published as part of Cruz Da Silva, Estevam L. & Carico, James E., 2012, 3567, pp. 1-64 in Zootaxa 3567 on pages 17-18