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Abstract
A new species of land planarian from northeastern Argentina, Choeradoplana crassiphalla sp. nov., is described. This is the first report of Choeradoplana in the Atlantic Forest of Argentina and the second species of the genus for this country. Choeradoplana includes nine species of Neotropical land planarians. The new species is light brown with a thin clearer median stripe. The pharynx is bell-shaped. The copulatory apparatus presents a short and very high and thick penis papilla. Choeradoplana crassiphalla is compared with other species of the genus, especially with Ch. marthae, due to the similarity of the copulatory apparatus.
Acknowledgments
The authors are grateful to Fundación Vida Silvestre Argentina and Ministerio de Ecología, Recursos Naturales Renovables y Turismo, Misiones for permission to conduct sampling at Reserva de Vida Silvestre Urugua-í, and especially to the park managers Ariel Tombo and Laura Aréjola for support during the fieldwork. We are thankful to the Administración de Parques Nacionales and INTA San Antonio for permission to conduct sampling at the Campo Anexo, in San Antonio County. We wish to acknowledge Eudoxia M. Froehlich and Fernando Carbayo for sending us photos of the slides of the holotype of Choeradoplana marthae. The authors acknowledge the anonymous reviewer for their useful suggestions. This work was financed by CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Agencia Nacional de Promoción Científica y Tecnológica (FONCyT) PICT 2007-01287, and UNLP (Universidad Nacional de La Plata) 11/N600.