Rhinocricus gauchus Rodrigues, Ott & Rodrigues, 2012, sp. nov.

Rhinocricus gauchus sp. nov.

(Figs. 8–15)

Types. Holotype male from São Francisco de Assis, Rio Grande do Sul, Brazil, 25.V.2009, I. Heydrich leg. (MCN 613). Paratypes: three males and three females, same data as the holotype (MCN 736); one male, 25.IV.2009, R. Ott leg. (MCTP 187); one male and one female, 21.VIII.2009, R. Ott leg. (IBSP); one male and one female, 21.VIII.2009, R. Ott leg. (MZUSP).

Etymology. The epithet refers to a term used to designate people from the state of Rio Grande do Sul, a locality with a wide distribution of the species.

Diagnosis. Rhinocricus gauchus is close to Rhinocricus cachoeirensis Schubart, 1944 by the shape of the anterior gonopod (Fig. 8), but differs from R. cachoeirensis by the sternite with straight apex and by the posterior gonopod with non-lamellate and distally rounded solenomere (Fig. 10).

Description. Male, holotype (Figs. 11, 12). With 53 segments. Length 65. Width 6. Clypeus dark-olive with spaced 2–2 supra-labial setae. Labrum yellowish-brown with 11–11 setae. Antennae olive-brown, with numerous sensory cones (around 20). Collum olive-brown with yellowish and ventro-laterally rounded borders. Prozonites light olive-brown; metazonites dark-olive with yellowish borders. Epiproct olive-brown, distally yellowish, rounded and longer than paraproct. Paraproct brown. Hypoproct olive-brown. Legs brown, third and fourth coxae prolonged. Ocelli dark-brown, disposed in six rows, in the following numeric order (dorsal to ventral): 9, 9, 9, 7, 4, 1 right and 9, 9, 9, 7, 5, 1 left. Ozopores black, beginning in the sixth segment. Scobinae starting at seventh segment.

Anterior gonopod (Figs. 8, 9). Sternite with wide base, distal portion short and straight, not surpassing the length of coxite and telepodite. Coxite wide, internal lobe not surpassing the telepodite, which presents a small distal lobe.

Posterior gonopod (Fig. 10). With long solenomere, surpassing the length of the tibiotarsus which presents a rounded distal portion. Tibiotarsus lamellate, rounded externally and with fine internal prolongation.

Female, paratype (Figs. 13–15). As the male unless noted. Length 70. Width 7. Labrum with 10–10 labral setae. Ocelli arranged in six rows in the following numeric order (dorsal to ventral): 8, 9, 8, 7, 6, 3 right and 9, 9, 9, 8, 6, 4 left. Scobinae less conspicuous than in male.

Material examined. BRAZIL, Rio Grande do Sul: Derrubadas, one male, 30.X.2003, R. Ott leg. (MCN 519); Montenegro, one male, 17.XI.1977, M. H. Galileo leg. (MCN 112); one male, 31.VI.1977, A. A. Lise leg. (MCN 041); one male and two females, 12.V.1977, H. Bischoff leg. (MCN 076); one male, 23.XI.1977, M. E. L. Souza leg. (MCN 114); seven males and five females, 19.X-16.XI.2001 (MCN 560); three males, one female and juvenile one, 24.VIII-19.X.2001, all R. Ott & A. Ott leg. (MCN 549); São Borja, one male, 8.XI.1979, H. Bischoff leg. (MCN 149); São Francisco de Assis, one male, 8–13.III.2010, Equipe Projeto Arenização leg. (MCN 616); two males, 27.XI.2009, R. Ott leg. (MCN 617); Tenente Portela, one male, 10.IX.1976, S. Scherer leg. (MCN 050); Triunfo, two males, 19.VI.1977, H. Bischoff leg. (MCN 086); one male, 19.V.1977, A. A. Lise leg. (MCN 067); one male, 15.IX. 1977, M. H. Galileo leg. (MCN 107).

Note. General color of living specimens, dark-olive and metazonite borders yellow (Fig. 15)

Distribution. Brazil (State of Rio Grande do Sul).