@article {1708, title = {Anatomical deviation of male organs of land planarians from Rio de Janeiro, Brazil, with description of two new species of Cratera (Platyhelminthes, Tricladida).}, journal = {Zootaxa}, volume = {3931}, year = {2015}, month = {2015 Mar 11}, pages = {27-40}, abstract = {

Two new land planarian species, collected in the State of Rio de Janeiro, Brazil, are described. Their external aspect is similar to that of Imbira marcusi Carbayo et al., 2013 and Pseudogeoplana theresopolitana (Schirch, 1929), respectively. The analysis of the internal organs, however, revealed they belong to the genus Cratera. The male copulatory organs of one species is very different from any other geoplaninid, for the penis papilla holds a large, distal cavity receiving the ejaculatory duct and, furthermore, the papilla projects vertically downwards from the roof of the male atrium. Thus we consider it as a new species, Cratera cuarassu sp. nov. The second species differs from its congeners in that the dorsal insertion of the penis papilla is anterior to the ventral one, and in that the female atrium is narrowed in the anterior portion. The species was found in the type locality of Pseudogeoplana theresopolitana (Schirch, 1929) and compares well with it in the external features. However, since its internal organs are unknown and the type material of the species is seemingly lost, we describe it as Cratera anamariae Carbayo, sp. nov.

}, keywords = {Animals, Brazil, Genitalia, Male, Male, planarians}, issn = {1175-5334}, doi = {10.11646/zootaxa.3931.1.2}, author = {Carbayo, Fernando and Almeida, Ana Laura} } @article {1679, title = {First report of the genus Cratera (Platyhelminthes, Geoplanidae) in Argentina, with description of a new species and comments on the species of the genus}, journal = {ZooKeys}, volume = {610}, year = {2016}, month = {11/08/2016}, pages = {1-12}, publisher = {Pensoft Publishers}, abstract = {

A new species of land planarians of the genus Cratera is described. Cratera viridimaculata sp. n. was recorded in the Atlantic Forest Ecoregion, in north-eastern Argentina, and represents the first report of the genus Cratera outside Brazil. The new species is about 50 mm in length and externally characterized by a color pattern consisting of a light green olive pigmentation on the dorsum, stippled with dark gray fine spots, and dorsal eyes. Other features regarding the internal anatomy are the presence of a glandular margin, Cutaneous Muscular Index (CMI) of 10\–13\%, pharynx cylindrical, prostatic vesicle extrabulbar, tubular and C-shaped, with a proximal bifurcated portion, penis papilla protrusible with ejaculatory duct widened in its distal portion, and female atrium funnel-shaped. The new species is compared and discussed with its congeners.

}, isbn = {1313-29891313-2970}, url = {https://doi.org/10.3897/zookeys.610.9465}, author = {Lisandro Negrete and Francisco Bursa} } @article {1677, title = {Three new species of Cratera Carbayo et al., 2013 from Araucaria forests with a key to species of the genus (Platyhelminthes, Continenticola)}, journal = {ZooKeys}, year = {2017}, month = {2017}, pages = {1 - 32}, publisher = {Pensoft Publishers}, abstract = {

Areas of Araucaria moist forest have been considered to constitute hotspots of land flatworm diversity, harbouring a high number of undescribed species. Herein we describe three new species of land flatworms of Cratera occurring in such type of forest in south Brazil. The three species are differentiated from their congeners mainly by their colour pattern, anatomy of the pharynx and prostatic vesicle, and details of the penis papilla and male atrium. An identification key to species of the genus in the Neotropical region is provided.

}, isbn = {1313-29891313-2970}, url = {http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5242264/}, author = {Rossi, Ilana and Leal-Zanchet, Ana} } @article {775, title = {A new species of land flatworm (Platyhelminthes: Continenticola) from areas of Araucaria Forest in southern Brazil}, journal = {Zootaxa}, volume = {3794}, number = {4}, year = {2014}, pages = {514-524}, author = {ILANA ROSSI and Marcela Fontoura and Silvana Amaral and Leal-Zanchet, Ana Maria} }