Increasing diversity of land planarians (Platyhelminthes: Geoplanidae) in the Interior Atlantic Forest with the description of two new species and new records from Argentina

Abstract

Here, we describe two new species of land planarians of the genera Pasipha and Imbira from the Atlantic Forest of Argentina: Pasipha quirogai sp. nov. and Imbira negrita sp. nov. Their external features and internal anatomy distinguish them from their congeners. Pasipha quirogai sp. nov. is about 40mm long, characterized by brown beige dorsal pigmentation with a golden yellow median band and thin graphite black para-median stripes, cylindrical pharynx, extrabulbar prostatic vesicle with paired proximal portion, male atrium with small folds in its proximal part, and female canal opening into the dorso-caudal wall of the female atrium. Imbira negrita sp. nov. is about 110mm long, with jet black dorsal pigmentation, pharynx collar-type, short female canal opening in the postero-dorsal portion of the female atrium, and epithelial lining of female atrium with stratified appearance. We also provide exhaustive descriptions of Geoplana quagga, Obama ladislavii, and Paraba multicolor, all recorded for the first time in Argentina, by analysing anatomical features of taxonomic relevance. In addition, we improve the description of G. quagga, mainly regarding the musculature, secretory cells, and the copulatory apparatus.

Trying to take over the world: Potential distribution of Obama nungara (Platyhelminthes: Geoplanidae), the Neotropical land planarian that has reached Europe

“…It is well known that land planarians, including O. nungara , harbour parasites, mainly nematode larvae, in different parts of the body (Negrete & Brusa, 2016, 2017; Negrete et al., 2019). In general, planarian specialists are not trained in identifying these nematodes, therefore, we simply describe their location in organs as supplementary information as a case of parasitism.…”

Biodiversity and threats in non-protected areas: A multidisciplinary and multi-taxa approach focused on the Atlantic Forest

“…Negrete and Brusa (2017) have reported a new record of the land planarian Obama ladislavii (Platyhelminthes: Geoplanidae) for Argentina.…”

Increasing the species diversity of the genus Paraba (Platyhelminthes) with the description of two new species from the southern atlantic forest

“…Species of Paraba have been recorded in southern, southeastern and northeastern Brazil and northeastern Argentina (Fig. 1), in areas of the Atlantic Forest and the Cerrado biomes (Carbayo et al, 2013;Negrete and Brusa, 2017;Amaral et al, 2019). Only four of these species occur in the southern Atlantic Forest (Graff, 1899;Froehlich, 1959;Leal-Zanchet and Carbayo, 2001;Baptista and Leal-Zanchet, 2005;Leal-Zanchet and Matos, 2011;Negrete and Brusa, 2017).…”

“…1), in areas of the Atlantic Forest and the Cerrado biomes (Carbayo et al, 2013;Negrete and Brusa, 2017;Amaral et al, 2019). Only four of these species occur in the southern Atlantic Forest (Graff, 1899;Froehlich, 1959;Leal-Zanchet and Carbayo, 2001;Baptista and Leal-Zanchet, 2005;Leal-Zanchet and Matos, 2011;Negrete and Brusa, 2017). Nevertheless, many ecological studies and inventories in this region indicated the existence of undescribed species of Paraba (Baptista et al, 2006;Fick et al, 2006;Amaral et al, 2014;Negrete et al, 2014).…”