Aegla jarai Bond-Buckup and Buckup, 1994

Bond-Buckup, Georgina, Jara, Carlos G., Buckup, Ludwig, Pérez-Losada, Marcos, Bueno, Alessandra A. P., Crandall, Keith A. & Santos, Sandro, 2010, New Species And New Records Of Endemic Freshwater Crabs From The Atlantic Forest In Southern Brazil (Anomura: Aeglidae), Journal Of Crustacean Biology 30 (3), pp. 495-502 : 501

Aegla jarai Bond-Buckup and Buckup, 1994

Diagnosis.—Antero-lateral spine of carapace extending beyond middle of cornea; protogastric lobes subtle; rostrum very long in adult males, styliform, carinate along its entire length; anterior angle of ventral margin of epimeron 2 unarmed; outer proximal margin of movable finger of cheliped with lobe tipped with tubercle; palmar crest of cheliped disc-shaped, strongly excavated; inner margin of ventral surface of ischium of cheliped with one conical distal spine and up to three tubercles; dorsal margin of merus of second pereiopod with spine, followed by tubercles; ventral margin of merus of second pereiopod with scaliform tubercles.

Formerly Known Distribution.—Brazil: Central and southern part of state of Santa Catarina, and northern part of state of Rio Grande do Sul ( Bond-Buckup, 2003).

New Records.— Brazil: State of Santa Catarina: Rio Itajaí basin: Rio Itajaí-Açú : Ribeirão Encoro, Indaial, 13.v.2000, H. Boos col., 2 m, 5 f ( UFRGS 2948 ); Ribeirão Espingarda , Indaial, 06.x.2000, H. Boos col., 2 m, 2 f ( UFRGS 2991 ); Ribeirão Caeté , Cascata Ferdinand Schaback , Blumenau, 03.iii.2001, H. Boos col., 2 f, 1 j ( UFRGS 3203 ) . The occurrence of A. jarai in the sub-basin of the Rio Itajaí-Açu broadens its known geographical distribution to northeastern Santa Catarina.

Biology.—Aspects of the growth of this species were characterized by Boos et al. (2006).

Remarks.—The phylogeny of the aeglids shows that A. jarai belongs to Clade C, with an estimated divergence time of 33.2 ± 1.8 MYA Pérez-Losada et al. (2004). The several populations of A. jarai form a nonmonophyletic group, according to these authors, indicating that new systematic studies on this species are needed.