Eusarcus berlae (Mello-Leitão), Hara & Pinto-Da-Rocha, 2010

Hara, Marcos Ryotaro & Pinto-Da-Rocha, Ricardo, 2010, Systematic review and cladistic analysis of the genus Eusarcus Perty 1833 (Arachnida, Opiliones, Gonyleptidae) 2698, Zootaxa 2698, pp. 1-136: 35-37

publication ID

http://doi.org/10.5281/zenodo.5295583

DOI

http://doi.org/10.5281/zenodo.5295583

persistent identifier

http://treatment.plazi.org/id/039387E5-9579-464C-FF65-FF3089F5FCC8

treatment provided by

Felipe

scientific name

Eusarcus berlae (Mello-Leitão)
status

comb. n.

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 View Materials )   ; Rio de Janeiro, Arlé leg., without date, ma holotype of M. arlei   ( MNRJ 41569 View Materials )   ; idem ( Campo Grande ), A. Lemos de Castro & F. Sampaio leg., 10.vi.1950, 1 fe ( MNRJ 11407 View Materials )   ; idem ( Floresta da Tijuca ), A. Giupponi leg., 19.xi.1999, 1 ma ( MNRJ4873 View Materials )   ; idem ( Grajaú ), Schubart leg., without date, 1 fe ( MZSP 24762 View Materials )   ; idem ( Horto ), C.A. Caetano leg., i.1989, 1 ma (originally in MNRJ 11404 View Materials )   ; idem ( Parque Estadual Pedra Branca ), D.R. Pedroso leg., 20.ix.2004, 1 ma ( MNRJ 17692 View Materials )   ; idem ( Praia Vermelha ), A.B. Kury, A. Telles, M. Lima leg., 13.xi.1993, 1 ma ( MNRJ 6886 View Materials )   .

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.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Opiliones

Family

Gonyleptidae

Genus

Eusarcus

Loc

Eusarcus berlae (Mello-Leitão)

Hara, Marcos Ryotaro & Pinto-Da-Rocha, Ricardo 2010
2010
Loc

Metagraphinotus berlae: Soares & Soares 1954b: 274

Kury, A. B. 2003: 175
Soares, B. A. M. & Soares, H. E. M. 1954: 274
1954
Loc

Metagraphinotus arlei Mello-Leitão 1935a: 12

Kury, A. B. 2003: 175
Soares, B. A. M. & Soares, H. E. M. 1954: 274
Soares, B. A. M. 1945: 379
Mello-Leitao, C. F. de 1935: 12
1935
Loc

Jacarepaguana berlae Mello-Leitão 1932: 451

Soares, B. A. M. 1944: 196
Piza JR, S. T. de 1943: 256
Mello-Leitao, C. F. de 1932: 451
1932