Sylviocarcinus pictus ( Milne-Edwards, 1853 )

Collins, Pablo A., Giri, Federico & Williner, Verónica, 2009, Range extension for three species of South American freshwater crabs (Crustacea: Decapoda: Trichodactylidae), Zootaxa 1977, pp. 49-54 : 51

Sylviocarcinus pictus ( Milne-Edwards, 1853)

( Fig. 1 b)

Sylviocarcinus pictus ( Milne-Edwards, 1853) — Magalhães & Türkay 1996 b: 244 p., fig. 135 (complete synonymy).

Diagnosis. Carapace: 4 distinctive teeth on each anterolateral border. Abdominal segments III–VI of male: fused. The male plp 1 bends following a regular curve to the right, subdistal lobe with subterminal spine field strongly developed, basal lobe: insignificant ( Fig. 1 b).

Habitat. This species was observed in caves and under tree trunks. In other caves, the crab Zilchiopsis collastinensis was mainly found.

Material examined. Seven males, one female and eight juveniles; carapace width: 43.5 mm (SD 6.68) two males, one female and four juveniles, FANM N° MFA - ZI - N° 271, Santa Fe stream ( Argentina, Santa Fe, 31 ° 38 'S 60 ° 39 'W), 22.3. 65, non-specific collector; two males and four juveniles, ML-INALI N° B - 9, Coronda River ( Argentina, Santa Fe, Sauce Viejo, 31 ° 48 'S 60 ° 46 'W), 13.12 .0 0, Collins coll.; one male, ML- INALI N° B 10, Setúbal Lagoon ( Argentina, Santa Fe, Colastiné Sur, 31 ° 39 'S 60 ° 45 'W), 20.12 .0 0, Collins coll.; one male ML-INALI N° B 11, Salado River ( Argentina, Santa Fe 31 ° 39 'S 60 ° 45 'W), 12.2 .0 3, Regner coll.; one male, ML-INALI N° B 15, El Limpio stream ( Argentina, Santa Fe, Paranacito, 28 ° 5 ’S 59 °09’W), 29.11 .0 5, Collins coll.

Southern locations. Setúbal lagoon (31 ° 35 'S 60 ° 39 'W), Coronda River (31 ° 48 'S 60 ° 46 'W) and Salado River (31 ° 39 'S 60 ° 45 'W), Paraná River floodplain, Argentina.

New distribution. Peru, Guyana, French Guyana, Paraguay, Bolivia, Brazil and Argentina, Coronda River south limits (31 ° 48 ’S 60 ° 46 ’W) ( Fig. 2 b).