identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
74C1733EDD5A59D2A8C4069A993B1641.text	74C1733EDD5A59D2A8C4069A993B1641.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ctenomys perrensi subsp. iberaensis Caraballo & Campo & Teta & Lanzone 2026	<div><p>Ctenomys perrensi iberaensis subsp. nov.</p><p>Figures 7, 9</p><p>Holotype.</p><p>CFA-MA -12676 (previously referred to as C-05470 in the personal collection of Julio R. Contreras), adult female; skin, skull and partial skeleton collected by J. Contreras on 29 May 1999 (Fig. 9).</p><p>Type locality.</p><p>Argentina, Corrientes, San Miguel, San Miguel (ca. –28.006401 °, –57.595901 °).</p><p>Additional material.</p><p>See Table S 5.</p><p>Diagnosis.</p><p>A medium-sized to large tuco-tuco of the C. torquatus species group. Compared with the nominotypical subspecies and C. perrensi dorbignyi, C. perrensi iberaensis subsp. nov. is slightly smaller, with a proportionally narrower posterior portion of the skull, including the braincase breadth, the bimeatal breadth, and the mastoid breadth, and comparatively broader and larger nasal bones (Fig. 7; Table S 5). Ctenomys perrensi iberaensis subsp. nov. also has a very distinctive karyotype (2 n = 41, 42, 44–46; FN = 76, 78) that does not overlap with those of the other known subspecies (see Fig. 3).</p><p>Measurements of the holotype.</p><p>(in mm) TLS, 44.04; CIL, 41.84; NL, 15.77; NW, 6.42; RW, 11.31; FL, 11.77; IOC, 9.35; ZB, 28.21; BB, 19.15; BMB, 26.28; MB, 26.78; IFL, 8.74; DL, 12.31; PL, 19.61; UIW, 7.4; UTL, 10.28; PM 4 L, 3.89.</p><p>Sperm type.</p><p>Symmetric.</p><p>Distribution.</p><p>Ctenomys perrensi iberaensis subsp. nov. is found at the margins of the Esteros del Iberá, mostly associated with sandy soils in well-drained areas. Specific localities include Curuzú Laurel, Loreto, San Miguel, San Alonso, Paraje Caimán, Contreras Cué, and Estancia la Tacuarita.</p><p>Etymology.</p><p>The subspecific epithet is a Latinized adjective that refers to the main distribution area of this subspecies in the ecoregion of the Esteros del Iberá, in the province of Corrientes, Argentina. The Iberá wetlands are marked by strong environmental instability, with recurrent floods and droughts reshaping water availability and connectivity (Ferrati et al. 2005). Elongated sandy hills act as natural levees, fragmenting the landscape and creating isolated water bodies during low-water periods. Tuco-tucos of the Corrientes group, particularly C. perrensi iberaensis subsp. nov., experience cycles of deme isolation and reconnection: during floods, they remain on the sandy hills, where individuals from different demes may meet, and as waters recede, they recolonize lower habitats.</p></div>	https://treatment.plazi.org/id/74C1733EDD5A59D2A8C4069A993B1641	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Caraballo, Diego A.;Campo, Denise H.;Teta, Pablo;Lanzone, Cecilia	Caraballo, Diego A., Campo, Denise H., Teta, Pablo, Lanzone, Cecilia (2026): Resolving species boundaries in a recent evolutionary radiation: An integrative approach to the Ctenomys Corrientes group (Mammalia: Rodentia: Ctenomyidae). Vertebrate Zoology 76: 317-337, DOI: 10.3897/vz.76.e173627
