Eusarcus sooretamae (Soares & Soares) 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 : 103-106

Eusarcus sooretamae (Soares & Soares) comb. n.

( Figs. 33, 41E,F, 49A)

Metagraphinotus sooretamae Soares & Soares 1946a: 206 , fig. 10; Soares & Soares 1954b: 274 (cat); H. Soares 1966b: 109 (cit); Kury 2003a: 175 (cat); (ma holotype; "Refúgio Sooretama, Linhares, [Espírito Santo]; Schubart leg.; 14.x.1944; MZSP 28655"; examined).

Eusarcus bifidus : [ misid] Soares & Soares 1946c: 237 (descr. “ allotype ” fe), fig. 3, 3-a; (fe “ allotype ” of E. bifidus ; “Santa Leopoldina, [Espírito Santo]; F.J. & R.H. Vervloeti leg.; x.1945; MZSP 1731 ”; examined) .

Material examined: BRAZIL. Espírito Santo: Linhares (Refúgio Sooretama), O. Schubart leg., 14.x.1944, ma holotype ( MZSP 28655 ) . Apiacá, without name of collector and date, 1 ma ( MNRJ 6058 ) ; Santa Leopoldina, F.J. & R.H. Vervloeti leg., x.1945, fe “ allotype ” of E. bifidus (MZSP 1731) . Minas Gerais: Viçosa (ESAV), O. Schubart leg., 15.x.1947, 1 ma ( HEMS 39 ) .

Diagnosis: E. sooretamae resembles E. aduncus , E. berlae , E. elinae , E. fulvus , E. signatus , 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 absence of PAM; median spine of scutal area III of medium size; basitarsus I not elongated; prolateral apical apophysis of the male coxa IV with a bifid ventro-posterior projection; femur IV not longer than 1.5 times dorsal scutum length, with dorsal and prolateral rows of enlarged tubercles, increasing in size in distal third, with large PDS, 1 PVS and a large retrolateral apical tubercle; ocularium with a median spine.

Redescription: Male (holotype): Dorsum ( Fig. 33A,B): Measurements: SL 3.80; SMW 3.35; femur I 2.20; II 4.40; III 3.00; IV 3.40. PAM absent. Anterior margin with 8 scattered tubercles, with 3 large tubercles on each corner. Ocularium far from anterior scutal margin; high, with a median spine, 5 tubercles. Carapace with 24 scattered tubercles. Scutal area I with 33–42 scattered tubercles on each side; II with 59; III with 64 and a median spine of medium size, not surpassing groove V; IV with 40 tubercles. Posterior margin of dorsal scutum with an irregular row of 9 tubercles, a regular row of 21. Free tergites I–II with an irregular row of 16 tubercles; III with a row of 7, another of 11. Anal operculum with 29 tubercles.

Venter: Coxa I with 22–28 tubercles, median and distal ones largest; II–III with 53–60 and 45–49, respectively, increasing in size distally; IV irregularly tuberculate.

Chelicera: Segment I smooth.

Pedipalpus: Trochanter dorsally inflated, smooth. Femur dorsally smooth; ventrally with 2 scattered tubercles. Tibial setation: Prolateral IIII/IiII, retrolateral IiIi. Tarsal setation: Prolateral IIi, retrolateral IiIi.

Legs ( Fig. 33C–H): Coxa IV densely tuberculate, surpassing dorsal scutum in dorsal view only apically, with 1 transversal prolateral apical apophysis, this conical, short, blunt, with 1 bifid projection pointing backwards. Trochanters I–IV with scattered tubercles; I–II with 1 large ventro-basal tubercle; II with retrolateral large tubercles; III with 1 large pointed retrolateral apical tubercle; IV prolaterally with 1 median apophysis, this conical, long, curved anteriad, with 1 large apical tubercle; retrolaterally with 1 large median tubercle, 1 conical short apical apophysis. Femora I–II with reduced PDS, RDS; III sinuous, small PDS, reduced RDS; ventrally with 2 rows of tubercles slightly increasing in size distally, 2 large apical tubercles; IV sinuous, with dorsal and prolateral rows of enlarged tubercles increasing in size in distal third, long PDS, this transversal, curved dorsad, reduced RDS; ventrally with 2 rows of tubercles increasing in size distally, prolateral ones enlarged, pointed, with 1 PVS, 1 large retrolateral tubercle. Tibia III ventrally with 2 rows of slightly enlarged tubercles; IV ventrally with 2 rows of tubercles increasing in size distally, becoming pointed, prolateral ones enlarged, with 1 prolateral apical spine, 1 large retrolateral tubercle. Tarsal segmentation: 6, 12, 6, 6.

Penis ( Fig. 41E,F): Stylus with medio-ventral trichomes, apex not swollen; with angular medio-ventral projection. Ventral process of glans curved; apex blunt. Ventral plate with concave sides; with 3 pairs of apically curved distal setae; 1 pair of short, straight median setae; 4 pairs of straight, thick basal setae.

Coloration: Brown on body, pedipalps, chelicerae, legs I–III and basal part of femur, patella, tibia and metatarsus of leg IV; light brown on tarsi. Dark brown on apophysis of coxa IV, trochanter IV and distal third of femur IV.

Female (MZSP 1731): Dorsum: Measurements: SL 4.40; SMW 3.40; femur I 2.40; II 4.90; III 3.40; IV 4.80. Ocularium high, with a bifid median spine, 14 tubercles. Carapace with about 100 scattered tubercles. Free tergites I–III with 55, 66, 46 scattered tubercles, respectively. Chelicera: Segment I with 3 tubercles. Pedipalpus: Tibial setation: Prolateral IiIi/ii, retrolateral ii. Tarsal setation: Prolateral IIi/Ii, retrolateral IiIi. Legs: Coxa IV densely tuberculate, with 1 oblique prolateral apical apophysis, this conical, short, pointed. Trochanters I–IV with scattered tubercles; I–III with large retrolateral tubercles; I with 1 large ventro-basal tubercle; IV retrolaterally with 1 large, slightly pointed subapical tubercle. Femur III with reduced PDS, RDS, ventrally only with rows of similar-sized tubercles; IV with dorsal and prolateral rows of similar-sized tubercles, small PDS, reduced RDS; ventrally only with 2 rows of tubercles slightly increasing in size distally. Tibiae III–IV with rows of similar-sized tubercles. Metatarsus I with 2 ventro-apical setae. Tarsal segmentation: 6, 9, 6, 7. Coloration: Brown.

Variation in males (n=4): Measurements: SL 3.50–3.80; SMW 3.00–3.35; femur I 1.80–2.20; II 3.50– 4.40; III 2.60–3.00; IV 3.10–3.40. Pedipalpus: Tibial setation: Prolateral IIII/IiII/IiIi/iiii. Tarsal setation: Retrolateral IiIi/Iiii. Femur I with reduced or small PDS; III with reduced or small PDS, RDS; IV with medium or large PDS. Tarsal segmentation: 6, 10–12, 6, 6.

Type locality: Brazil, Espírito Santo, Linhares .

Geographical distribution ( Fig. 49A): Brazil. SE Minas Gerais and Espírito Santo .