Eusarcus berlae Hara & Pinto-Da-Rocha 2010, comb. n.
Creators: name: Hara, Marcos Ryotaro
name: Pinto-Da-Rocha, Ricardo
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Opiliones
Gonyleptidae
Eusarcus
Eusarcus berlae

description: Eusarcus berlae (Mello-Leitão) comb. n.   
(Figs. 6, 41C,D, 50A)  
 Jacarepaguana berlae Mello-Leitão 1932: 451, fig. supl. 11; Piza 1943: 256 (diag); B. Soares 1944e: 196 (cit), 201 (descr fe), fig. 4; 1945c: 378 (cat). (ma holotype; "Jacarepaguá, [Rio de Janeiro], Rio de Janeiro; MNRJ 1395"; examined).   
 Metagraphinotus berlae: Soares & Soares 1954b: 274 (cat); Kury 2003a: 175 (cat).   
 Metagraphinotus arlei Mello-Leitão 1935a: 12, figs. 4–4a; 1935b: 101 (cit); B. Soares 1945c: 379 (cat); Soares & Soares 1954b: 274 (cat); Kury 2003a: 175 (cat). (ma holotype; " Distrito Federal [Rio de Janeiro, Rio de Janeiro]; MNRJ 41569"; examined). Syn. n.   
 Material examined: BRAZIL. Rio de Janeiro: Rio de Janeiro (Jacarepaguá), without name of collector and date, ma holotype of Jacarepaguana berlae (MNRJ 1395). BRAZIL. Rio de Janeiro: Cachoeiras de Macacu (Reserva Ecológica Guapiaçu), R. Baptista leg., 11.iii.2001, 1 ma & 1 fe (MNRJ 14303); Rio de Janeiro, Arlé leg., without date, ma holotype of M. arlei (MNRJ 41569); idem (Campo Grande), A. Lemos de Castro & F. Sampaio leg., 10.vi.1950, 1 fe (MNRJ 11407); idem (Floresta da Tijuca), A. Giupponi leg., 19.xi.1999, 1 ma (MNRJ4873); idem (Grajaú), Schubart leg., without date, 1 fe (MZSP 24762); idem (Horto), C.A. Caetano leg., i.1989, 1 ma (originally in MNRJ 11404); idem (Parque Estadual Pedra Branca), D.R. Pedroso leg., 20.ix.2004, 1 ma (MNRJ 17692); idem (Praia Vermelha), A.B. Kury, A. Telles, M. Lima leg., 13.xi.1993, 1 ma (MNRJ 6886).   
 Diagnosis: E. berlae resembles E. aduncus, E. elinae, E. fulvus, E. signatus, E. sooretamae, E. cavernicola, E. mirabilis and E. sergipanus because of the conical prolateral median apophysis on the male trochanter IV, and can be distinguished by: The presence of PAM; median spine of scutal area III of medium size; basitarsus I not elongated; prolateral apical apophysis of coxa IV with ventro-posterior triangular projection; ocularium with a median spine; only 1 large proventral apical tubercle on femur IV.   
 Redescription: Male (holotype): Dorsum (Fig. 6A,B): Measurements: SL 3.40; SMW 3.00; femur I 1.80; II 3.40; III 2.50; IV 3.20. Median paracheliceral projection of similar-size as PAM. Anterior margin with 1 large tubercle on each corner. Ocularium far from anterior scutal margin; high, with a median spine, 5 tubercles on posterior face. Carapace with 28 scattered tubercles. Scutal area I with 27 scattered tubercles on each side; II with 58; III with 70 and a median spine surpassing groove IV; IV with 44 tubercles. Posterior margin of dorsal scutum and free tergites I–III with rows of 13 and 15, 4 and 16, 9 and 14, 6 and 12 tubercles, respectively. Anal operculum with 46 tubercles.   
Venter: Coxa I with 24–31 tubercles, median and distal ones largest; II–III with 56–60 and 59–60, respectively, increasing in size distally; IV irregularly tuberculate.  
Chelicera: Segment I with 2 tubercles.  
Pedipalpus: Trochanter dorsally inflated, with 2 tubercles. Femur dorsally with scattered, small tubercles; ventrally with 2–3 aligned tubercles. Tibial setation: Prolateral IiIi, retrolateral Iii/IiIi. Tarsal setation: Prolateral IIi, retrolateral IiIi.  
Legs (Fig. 6C–F): Coxa II with 7 tubercles on retrolateral margin; IV densely tuberculate, surpassing dorsal scutum in dorsal view only apically, with 1 transversal prolateral apical apophysis, this conical, short, blunt, with 1 ventral projection and another one, transversal, in the middle. Trochanters I–IV with scattered tubercles; I with 1 large ventro-basal tubercle; II–III with large retrolateral tubercles; IV prolaterally with 1 median apophysis, this conical, curved anteriad, with 1 large median tubercle; retrolaterally with 1 large, pointed apical tubercle. Femora I–II with reduced PDS, RDS; III slightly sinuous, with reduced PDS, small RDS; ventrally with 2 rows of tubercles slightly increasing in size distally, 1 large prolateral apical tubercle; IV slightly sinuous, with medium PDS, small RDS; ventrally with a prolateral row of tubercles slightly increasing in size distally and 1 large prolateral apical tubercle. Tibia III ventrally with 2 rows of tubercles slightly increasing in size subapically. Metatarsus I with 2 ventro-apical setae; II with 1 proventral apical seta. Tarsal segmentation: 5, 8, 6, 6.  
Penis (Fig. 41C,D): Stylus with medio-ventral trichomes, apex swollen; with angular medio-ventral projection. Ventral process of glans curved, with apex blunt, thin. Ventral plate with concave sides; with 3 pairs of slightly curved distal setae; 1–2 pairs of short, straight median setae; 4 pairs of straight basal setae, basal pair far from others and smaller.  
Coloration: Body, pedipalps and chelicera brown; tarsi light brown. Legs and free tergites dark brown.  
Female (MZSP 24762): Dorsum: Measurements: SL 3.40; SMW 2.90; femur I 1.10; II 3.15; III 2.20; IV 3.00. Median paracheliceral projection moderately enlargedr than PAM. Pedipalpus: Tibial setation: Prolateral IiIi/IIi, retrolateral IIi/IiIi. Tarsal setation: Prolateral IIi, retrolateral IiIi. Legs: Coxa IV densely tuberculate, with 1 prolateral apical apophysis, this short, blunt. Trochanter IV with scattered tubercles, with 1 large retrolateral apical tubercle. Femora I, III ventrally with 2 rows of slightly enlarged tubercles; IV ventrally with 2 rows of similar-sized tubercles. Tibia III ventrally with 2 rows of similar-sized tubercles. Metatarsi I–II without ventro-apical setae. Tarsal segmentation: 4–5, 8, 6, 6.  
 Variation in males (n=6): Measurements: SL 3.25–3.90; SMW 2.70–3.20; femur I 1.60–2.50; II 3.30– 6.10; III 2.40–3.60; IV 3.00–4.50. Pedipalpus: Tibial setation: Prolateral IiIi/iiii, retrolateral IiIi/IIi/Iii. Tarsal setation: Prolateral IIi/iIi, retrolateral IiIi/IIi. Femur II with reduced or small RDS; IV with small or medium PDS. Tarsal segmentation: 5–6, 8–11, 6, 6.   
 Variation in females (n=3): Measurements: SL 3.40–3.70; SMW 2.90–3.10; femur I 1.10–2.10; II 3.15– 4.10; III 2.20–2.90; IV 3.00–3.70. Pedipalpus: Tarsal setation: Prolateral IiIi/IIi. Femur III with reduced or small RDS; IV with reduced or small PDS, RDS. Tarsal segmentation: 4–6, 8–9, 6, 6.   
 Type locality: Brazil, Rio de Janeiro, Rio de Janeiro.   
 Geographical distribution (Fig. 50A): Brazil. Rio de Janeiro.
description: Published as part of Hara, Marcos Ryotaro & Pinto-Da-Rocha, Ricardo, 2010, Systematic review and cladistic analysis of the genus Eusarcus Perty 1833 (Arachnida, Opiliones, Gonyleptidae) 2698, pp. 1-136 in Zootaxa 2698 on pages 35-37