Mesophaenocora polyova, gen. nov., sp. nov. from Uruguay and establishment of the new subfamily Mesophaenocorinae (Platyhelminthes : Rhabdocoela : Typhloplanidae)
Carolina Noreña A , Francisco Brusa B D , Rodrigo Ponce de León C and Cristina Damborenea BA Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales, José Gutiérrez Abascal 2 28006, Madrid, Spain.
B CONICET, División Zoología Invertebrados, Facultad de Ciencias Naturales y Museo, UNLP, Paseo del Bosque s/n o 1900, La Plata. Argentina.
C Laboratorio de Zoología de Invertebrados, Facultad de Ciencias, Iguá 4225, 11400 Montevideo, Uruguay.
D Corresponding author. Email: fbrusa@fcnym.unlp.edu.ar
Invertebrate Systematics 19(6) 577-584 https://doi.org/10.1071/IS04036
Submitted: 3 December 2004 Accepted: 4 November 2005 Published: 16 January 2006
Abstract
Mesophaenocora polyova is a new species discovered in temporary ponds in Uruguay. It has testicles and vitellaria in grape-like bunches, the genital atrium is V-shaped and differentiated into two regions (male and female) and the bursa copulatrix is absent. A seminal receptacle and ‘vesicula resorbiens’ are present. This combination of characters distinguishes Mesophaenocora from the other genera in the Typhloplanidae. A preliminary cladistic analysis of subfamily relationships places the new taxon in a high position in the tree. The new subfamily belongs to a clade within the subfamilies Mesostominae and Phaenocorinae, showing affinity between these three taxa. The erection of this new subfamily is supported by cladistic analysis.
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