identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03B487F6FF87FFC0FF56FA06FD6DFD38.text	03B487F6FF87FFC0FF56FA06FD6DFD38.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Oryzomys bauri Allen 1892	<div><p>Oryzomys bauri Allen, 1892</p><p>Type material. The type of Oryzomys bauri, described by Allen in 1892, is an adult male, part of a series composed by additional four specimens in alcohol: “I male two-thirds grown, I male half grown, I female adult and I female about half grown”, all captured in Barrington Island. Allen (1892) also mentioned the existence of three skins preserved in antiseptic solution. These specimens were sent to J. A. Allen by Dr. G. Baur of Clark University, Worcester, Massachusetts, and were obtained during the Salisbury Expedition in the Galapagos Archipelago (Allen 1892). Those specimens were probably loaned to the AMNH through J. A. Allen, however they are not housed at the AMNH, neither in the regular nor in the type collections. As a matter of fact, on the original description there is no information on where this material may have been deposited, or any mention to voucher field numbers or collection numbers. We contacted Clark University (Jamie Fitzgerald and Paula Kupstas in litt.), and were informed that most rodents deposited there lack labels and that most of their identifying information has been lost over the last decades. Therefore, we believe that the designation of a neotype is important to define the nominal taxon objectively. We support this claim, since we consider that the type is lost, and we believe that this attends the qualifying conditions established by the ICZN (1999) article 75.3.4. Moreover, we selected as a neotype, a specimen from the same type locality (article 75.3.6), that is housed at the Museum of Vertebrate Zoology, a traditional institution that houses several type specimens (article 75.3.7), attending ICZN (1999) requirements.</p><p>NEOTYPE: Adult female, deposited at the Museum of Vertebrate Zoology, under number MVZ 145379, collected by J. L. Patton, in 21.I.1974, number JLP 3951. It is preserved in skin, skull and tissue in ethanol; skin and skull are in good condition (Fig. 4). Other ten specimens are also part of the series, all deposited in the Museum of Vertebrate Zoology: five females, MVZ145372, MVZ145373, MVZ145376, MVZ145377, MVZ145379, and five males, MVZ145374, MVZ145375, MVZ145378, MVZ145380, MVZ145381. We chose this specimen since it is well preserved and harbors important information associated, such as skin, skull and tissue preserved on alcohol.</p><p>Type condition. Specimen preserved in skin and skull; both are in excellent condition, without any broken part.</p><p>Type locality. According to the original label, the neotype is (as the original missing specimens) from “ Barrington Cove, Isla Barrington ”. Here, we propose the following arrangement: “ Barrington Cove, Barrington Island [= Isla Santa Fe], Galapagos Archipelago, Ecuador ; geographical coordinates 00°49’S, 90°04’W ”. <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-90.066666&amp;materialsCitation.latitude=-0.81666666" title="Search Plazi for locations around (long -90.066666/lat -0.81666666)">The</a> type locality is represented in figure 3. The specimens employed by Allen (1892) in the description of this species were originally collected in “Barrington Island ” .</p><p>Original description. The original description of the type designated by J. A. Allen was published in the Bulletin American Museum of Natural History, vol. 4, Article 4, 1892 (48–49), and is presented below:</p><p>“Evidently allied to Oryzomys galapagoensis (Waterh.), but differing from it in proportions and coloration.</p><p>Pelage full and long. General color above dusky grayish brown, faintly varied with pale yellowish brown; below the pelage is white at the surface, passing into plumbeous. Muzzle lighter and more grayish, tinged strongly with yellowish brown on the sides of the muzzle and faintly so on the chin. Ears large, obtusely rounded, almost naked within, well haired externally on the anterior third, and sparsely haired over the rest of the outer surface. Feet above thinly haired, white faintly tinged with yellowish; soles naked, 6-tuberculate; posteriorly smooth and pale horn color, anteriorly granulated and yellowish, slightly varied with gray. Tail indistinctly bicolor, nearly naked, the annulations showing distinctly through the very short hairs; above dusky brown, below ashy brown.</p><p>Measurements —Male Adult: Total length, 280 mm; head and body, 132; tail, 147; hind foot, 32.5; fore foot, 18; ear, 18. Female Adult: Total length, 269; head and body, 124; tail, 145; hind foot, 31; fore foot, 16.5; ear, 17.3. Young Male: Total length, 248; head and body, 108; tail, 138; hind foot, 16.5; fore foot, 14.5; ear, 16. 5.</p><p>Skull —Total length, 37.4; basal length (condyles to incisors), 27.5; greatest zygomatic breadth, 18.3; least interorbital breadth, 5.6; length of nasals, 13.5; from posterior border of palate to incisors, 14.7; length of lower jaw (tip of incisors to condyle), 22.8; height at condyle, 9.9.</p><p>Based on 5 specimens in alcohol, namely, I male adult, I male two-thirds grown, I male half grown, I female adult, and I female about half grown, taken on Barrington Island, July 9 and I0, I89 I. There are also three inverted skins in antiseptic solution, taken at the same place and time. The adult male may be considered as the type ”</p><p>Dimensions of the neotype. External: Total length: 308 mm; length of tail: 160 mm; hindfoot: 32 mm; length of ear: 23 mm; weight: 94g; Craniodental: measurements of the neotype are available in table 2.</p><p>Morphological description of the neotype. Dorsal pelage very long, lax, soft and woolly; yellowish wool and cover hairs and brown guard hairs; dorsal coloration yellowish cream, weakly and grossly grizzled with dark brown resulting in brownish coloration; venter predominantly gray colored; tail greater than length of body, densely covered by long hairs, weakly bicolored, with large scales, about 16 scales/cm; pes densely covered by long hairs, with ungual tufts dense and longer than claws, all pure white; interdigital and plantar pads fleshy, hypothenar and thenar pads closer to the calcaneus and densely covered with squamae; pinnae externally covered with long hairs.</p><p>Skull moderately robust, with long and narrow rostrum (approximately 39% of skull length [LN/ONL ratio]); zygomatic plate moderately projected anteriorly, not reaching beyond nasolacrimal capsule; rostral fossa moderately deep; moderately projected plate and deep fossa, configuring a moderately deep and wide zygomatic notch; interorbital region convergent anteriorly, with supraorbital margins sharp and acute, forming small dorsolateral crests; zygomatic arches weakly divergent posteriorly, wider near the squamosal root; braincase small and delicate, elongated; braincase with temporal margins slightly squared, without crests; interparietal short and wide; fronto-squamosal suture contiguous with fronto-parietal suture; alisphenoid strut absent; anastomotic channel present, configuring pattern 3 of carotid circulation (Voss 1988); parietals expanding over surface side of skull; postglenoid foramen relatively large; tegmen tympani small, not overlapped to squamosal; incisive foramen long, wider medially, with anterior and posterior margins rounded, posterior margin reaching anterocone of M1; posterior margin of zygomatic plate situated anterior to the alveolus of M1; intermediate palate, mesopterygoid fossa extends anteriorly between the maxillary bones but not between molar; palate with deep posterolateral palatal pits recessed in deep and large palatine depressions; palatal excrescencies weakly developed; anterior border of mesopterygoid fossa rounded, roof of mesopterygoid fossa perforated by very large vacuities, occupying the presphenoid and basisphenoid; auditory bulla, with short and wide stapedial process.</p><p>Upper incisors opisthodont; upper and lower molars with labial and lingual cusps arranged in opposite pairs; dental series with excessive wear, hindering the full dental description (we provide a description of the molars of the neotype series on the item “Comparisons among type specimens”). M1 with anteroloph almost entirely coalesced to anterocone; mesoloph partially fused to paracone (labial portion not fused); M2 with mesoloph partially fused to paracone (labial portion not fused); M3 small and subtriangular.</p><p>Observation. In the original description, Allen (1892) pointed out the close relationship between O. bauri and O. galapagoensis, being the first species later synonymized with Mus galapagoensis by Cabrera (1961). Nevertheless, Allen justified the validity of a new species by the fact that, even though individuals of O. bauri have similar size as those of O. galapagoensis, O. bauri representatives exhibit larger ears and tails longer than head and body, and, furthermore, coloration much less grizzled with yellow.</p><p>On the geographical distribution and habitat of the species, Dr. Baur (cited by Allen 1892: 50), stated that:</p><p>“On Barrington Island the small Rodent was pretty common; it was found between the bushes near the shore, and also high up between grass and the lava rocks.”</p></div>	https://treatment.plazi.org/id/03B487F6FF87FFC0FF56FA06FD6DFD38	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.		MagnoliaPress via Plazi	Prado, Joyce Rodrigues Do;Percequillo, Alexandre Reis	Prado, Joyce Rodrigues Do, Percequillo, Alexandre Reis (2016): Systematic studies of the genus Aegialomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae): Annotated catalogue of the types of the species-group taxa. Zootaxa 4144 (4): 477-498, DOI: 10.11646/zootaxa.4144.4.2
03B487F6FF84FFC6FF56FC91FCB9FB1D.text	03B487F6FF84FFC6FF56FC91FCB9FB1D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Oryzomys xanthaeolus Thomas 1894	<div><p>Oryzomys xanthaeolus Thomas, 1894</p><p>Holotype. BMNH 85.4.1.47, adult specimen, without information regarding sex, collected by J. Stolzmann, with no precise date of collection. There is no information on the original description about other specimens collected from the same or neighbor localities (Fig. 5).</p><p>Type condition. Specimen preserved in skin and skull; the skin is in good condition and the skull is badly damaged, with basicranium, left ventral portion, and auditory bullae missing, right zygomatic arch broken, and left upper molar series missing, except for M1.</p><p>Type locality. “ Tumbez, N. Peru ”, as in the original description (Thomas, 1894). Tumbez is a misspelling of Tumbes, the correct name for the river, locality and province of the NW Peru (see Stephens &amp; Traylor, 1983). The more appropriate type locality would be “ Tumbes, Tumbes Province, North Peru; geographical coordinates 03°34’S, 80°28’W”. The type locality is represented in figure 3.</p><p>Original description. the description was originally published on the Annals and Magazine of Natural History, ser. 6, vol. 14, in 1894 (p. 346–366), as follows:</p><p>“Size and general characters of O. galapagoensis, Waterh., to which I had previously assigned it. Fur harsher and shorter than in that species, the hairs on the back about 10 or 11 millim. in length. General colour coarsely grizzled yellow and black, the mixture approximating to tawny olive of Ridgway. Cheeks and sides clearer yellow, or rather buff. Under surface white, the slate-coloured bases of the hairs scarcely showing through; line of demarcation on sides well defined. Eyes with a rather lighter ring surrounding them. Ears large, their substance apparently brown, thinly clothed with yellowish hairs. Hands and feet very thinly haired, almost naked, their few scattered hairs white; fifth hind toe (without claw) reaching to the middle of the first phalanx of the fourth. Tail very long, thinly haired, brown above and whitish below. Skull with a short broad muzzle, sharply edged and beaded supraorbital margins, and medium palatal foramina, about equal in length to the upper molar series.”</p><p>Original dimensions. Length of head and body: 121 mm; tail: 139 mm; foot: 30 mm; ear: 18.5 mm. Skullfront of interparietal to nasal tip: 28.3 mm; greatest breadth: 16mm; nasals: 12.7 x 4 mm; interorbital breadth: 5.1 mm; length of outer wall of interorbital foramen: 3.4 mm; palate length from henselion (henselion, accordingly to Thomas (1905: 193), “is the back of the alveolus of either of the median incisors, the point used and defined by Prof. Hensel in his craniological work”): 13.4 mm; diastema: 8 mm; palatal foramina 5.5 x 2.5; length of upper molar series: 5 mm; lower jaw: condyle to incisor-tip: 20 mm; height of ramus below: 4.4 mm. Additional craniodental measurements are provided in table 2.</p><p>Morphological description. Pelage soft, long, lax, dense and woolly; pale yellow wool and cover hairs and brown guard hairs; dorsal color yellowish cream, pale, weakly grizzled with brown medially, resulting in a pale yellow grayish general coloration; venter grayish, with gray based and white tipped hairs; tail longer than head and body length, conspicuously bicolor (dark gray above, unpigmented below); densely hairy, with scales very large, about 16 scales per cm; pes covered by white hairs and with short and sparse ungual tufts (approximately half size of claw), pads developed with thenar closest to hypothenar, surface rough; pinnae with very long hairs, more abundant externally, brown with golden apex and internally more golden than brown.</p><p>Skull moderately robust, with moderately long and broad rostrum; zygomatic plate weakly projected anteriorly, not reaching beyond nasolacrimal capsule; rostral fossa shallow; weakly projected plate and shallow fossa, configuring a shallow and narrow zygomatic notch; interorbital region convergent anteriorly, with supraorbital margins sharp and acute, forming small dorsolateral crests; zygomatic arches weakly divergent posteriorly, wider near the squamosal root; braincase small and delicate, elongated; braincase with temporal margins slightly squared, without crests; interparietal short and wide; fronto-squamosal suture contiguous with fronto-parietal suture; alisphenoid strut absent; anastomotic channel present, configuring pattern 3 of carotid circulation (Voss 1988); parietals expanding over surface side of skull; tegmen tympani large, not overlapped to squamosal; incisive foramen long, wider medially, with anterior and posterior margins rounded, posterior margin reaching anterocone of M1; posterior margin of zygomatic plate collinear to the alveolus of M1; palate with posterolateral palatal pits small, not recessed in palatine depressions.</p><p>Upper incisors opisthodont; upper molars with labial and lingual cusps arranged in opposite pairs; M1 with anteroloph connected to anterocone, parallel to it and separated from it by small anteroflexus; anterocone with weakly anteromedian flexus; paracone connected medially to protocone (and not to median mure) and to mesoloph more labially (defining a small and oblique mesofosset); mesoloph long, connected with median mure medially; mesoloph separated from metacone by long and deep metaflexus; posteroloph fused labially to metacone, defining a small posterofosset; M2 with short anteroloph; paracone connected medially to protocone (and not to median mure) and to mesoloph more labially (defining a small and oblique mesofosset); mesoloph long; posteroloph fused labially to metacone, defining a small posterofosset; M3 small, subtriangular; lower molars with labial and lingual cusps arranged in opposite pairs; m1 with weak anteromedian flexid; m1 and m2 with small lophulid emerging from the labial margin of entoconid (entolophulid or pseudo mesolophid) mesolophid on M1 and M2 small.</p><p>Observation. In 1884 (p. 453) Thomas identified two specimens from Tumbes (two skins) as Hesperomys (Oryzomys) galapagoensis, stating that this represent a record of this species in Peru. Ten years later, Thomas (1894) recognized this Tumbes sample as a new species, O. xanthaeolus, describing the external morphology of the species in detail, but providing a simplified description of the craniodental morphology. He compared the new species O. xanthaeolus with O. galapagoensis (informing that previously [in 1884] had assigned this specimen as galapagoensis) and noted a clear association between the two species, but also described some differences between them, namely the more yellowish color in O. xanthaeolus, instead of the brownish hues of O. galapagoensis; as well as the shorter fur and longer tail on O. xanthaeolus .</p></div>	https://treatment.plazi.org/id/03B487F6FF84FFC6FF56FC91FCB9FB1D	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.		MagnoliaPress via Plazi	Prado, Joyce Rodrigues Do;Percequillo, Alexandre Reis	Prado, Joyce Rodrigues Do, Percequillo, Alexandre Reis (2016): Systematic studies of the genus Aegialomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae): Annotated catalogue of the types of the species-group taxa. Zootaxa 4144 (4): 477-498, DOI: 10.11646/zootaxa.4144.4.2
03B487F6FF82FFC4FF56FAB5FBD9FA8F.text	03B487F6FF82FFC4FF56FAB5FBD9FA8F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Oryzomys baroni Allen 1897	<div><p>Oryzomys baroni Allen, 1897</p><p>Holotype. AMNH 11820/10112, a female specimen, collected by O. T. Baron, in 27.IV.1894 (Fig. 6).</p><p>Type condition. This specimen is preserved as skin and skull, both in good condition; the skin has a small area on the tail that has been torn and sown, and the pes are tied to each other and to the tail; the skull exhibit damaged nasolacrimal capsular projections as well as the proximal portion (maxillary and frontal) of the infra-orbital foramen.</p><p>Type material. The description of this species was based also on two additional specimens, AMNH 10111 and AMNH 11819: an old female, with molars and a sub-adult female, with molars only slightly worn, respectively.</p><p>Type locality. Malca, Cajabamba, alt. 8000 feet. <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-78.05&amp;materialsCitation.latitude=-7.616667" title="Search Plazi for locations around (long -78.05/lat -7.616667)">The</a> more appropriate designation would be Malca, Province Cajabamba, Region Cajamarca, Peru; alt 8,000 ft (circa 2,400m); geographical coordinates of this locality are 07°37’S, 78°03’W. The type locality is represented in figure 3.</p><p>Original description. This species was described on the Bulletin American Museum of Natural History, vol. 9, issue 8, 1897:117–118, as follows:</p><p>“Above yellowish brown, mixed with many blackish tipped hairs; sides paler and more grayish; below clear whitish gray, the hairs plumbeous at base, the basal portion slightly tinging the surface; fore limbs grayish brown to the base of the toes, which are lighter; lower portion of tarsus dusky, metapodials and toes dull soiled whitish; ears rather large, clothed thinly on both surfaces with short fine hairs, brown externally, slightly rufous internally; tail brown, nearly concolor, being barely lighter below, clothed with fine short hairs, too sparse to conceal the annulations. Mammae, i pectoral, i abdominal=4; only 3 functionally developed in the present specimen.</p><p>Skull—Cranial portion rather flat; facial portion broad, with very broad nasals; supraorbital and cranial ridges well developed, forming raised beads; palatal floor extending but slightly behind the last molar, but in other respects the skull and dentition are nearly as in typical Oryzomys, including tooth pattern.”</p><p>Original dimensions. Total length: 290 mm; head and body: 130 mm; tail: 160 mm; hindfoot: 30 mm. Ear from notch: 18 mm. Skull: Total length: 35 mm; basal length: 30 mm; zygomatic breadth: 17.5 mm; interorbital breadth: 11 mm; length of nasals: 13.5 mm; width of nasals at middle: 5. 5 mm; interparietal, 10 x 3 mm; length of interpterygoid fossa: 10.3 mm; palatine length, 15mm; length of anterior palatine foramina: 7 mm; upper molar series, 5.3 mm; diastema, 9 mm; length of lower jaw (from inner base of incisors to posterior border of condyle): 19 mm; from incisive tip to condyle: 22.3 mm; height of lower jaw at condyle: 8.6 mm; height of ramus at m1: 5 mm. Other craniodental measurements are in table 2.</p><p>Morphological description. Pelage soft, dense, lax, and long; yellowish wool and cover hairs and brown guard hairs; dorsal color yellowish cream, lightly grizzled with brown, resulting in grayish-yellow color; venter grayish; tail longer than head and body length, bicolored dorsoventrally, covered by very long hairs, with very small scales, with approximately 23 scales/cm; pes densely covered by long and white hairs, ungual tufts short and thin, some the same size as claw and others smaller, tufts white; plantar pads fleshy, including thenar and hypothenar; pinnae covered internally and externally with brown hairs with yellowish apex.</p><p>Skull moderately robust, with long and broad rostrum (approximately 38% of skull length [LN/ONL ratio]); zygomatic plate greatly projected anteriorly, not reaching beyond nasolacrimal capsule; rostral fossa moderately deep; greatly projected plate and moderately deep fossa, configuring a very deep and wide zygomatic notch; interorbital region convergent anteriorly, with supraorbital margins sharp and acute, forming small dorsolateral crests; zygomatic arches weakly divergent posteriorly, wider near the squamosal root; braincase small and delicate, elongated; braincase with temporal margins slightly squared, without crests; interparietal short and wide; frontosquamosal suture contiguous with fronto-parietal suture; alisphenoid strut absent; anastomotic channel present, configuring pattern 3 of carotid circulation (Voss 1988); parietals expanding over surface side of skull; incisive foramen long, wider medially, with anterior and posterior margins more acute, posterior margin leveled to the alveolus of M1; posterior margin of zygomatic plate situated anterior to the alveolus of M1; palate intermediate, with mesopterygoid fossa extending anteriorly between the maxillary bones but not between molars; palate with deep posterolateral palatal pits recessed in small and deep palatine depressions; palatal excrescencies absent; anterior border of mesopterygoid fossa rounded, roof of mesopterygoid fossa perforated by large vacuities, occupying the presphenoid and basisphenoid; auditory bulla, with short and wide stapedial process.</p><p>Upper incisors opisthodont; upper and lower molars with labial and lingual cusps arranged in opposite pairs; dental series significantly worn, hindering the full dental description.</p><p>Observation. Allen (1897) provided a superficial description of the external and cranio-dental morphology, and pointed to the close relationship of this species with O. xanthaeolus . He highlighted, however, that O. baroni specimens are much larger and their coloration is less yellowish than in O. xanthaeolus .</p></div>	https://treatment.plazi.org/id/03B487F6FF82FFC4FF56FAB5FBD9FA8F	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.		MagnoliaPress via Plazi	Prado, Joyce Rodrigues Do;Percequillo, Alexandre Reis	Prado, Joyce Rodrigues Do, Percequillo, Alexandre Reis (2016): Systematic studies of the genus Aegialomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae): Annotated catalogue of the types of the species-group taxa. Zootaxa 4144 (4): 477-498, DOI: 10.11646/zootaxa.4144.4.2
03B487F6FF80FFDAFF56FA4BFF68FA69.text	03B487F6FF80FFDAFF56FA4BFF68FA69.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Oryzomys xanthaeolus subsp. ica Osgood 1944	<div><p>Oryzomys xanthaeolus ica Osgood, 1944</p><p>Holotype. FMNH 53157, a female specimen, deposited at The Field Museum, collected by C. C. Sanborn, in 17.I.1942 (Fig. 7).</p><p>Type condition. Specimen preserved in skin and skull; both of them are in excellent condition, without any broken part.</p><p>Type material. The type material consists of two specimens: the holotype, described above, and the paratype (FMHN 53158), an adult female.</p><p>Type locality. Hacienda San Jacinto, near Ica, Province of Ica, southwestern Peru . The geographical coordinates of this locality are 14°09’S, 75°45’W. The type locality is represented in figure 3.</p><p>Original description. Osgood described Oryzomys xanthaeolus ica in the Zoological Series of the Field Museum of Natural History, vol. 29, n.13, 1944:192–193, providing the following simplified characterization:</p><p>“Similar in color and general characters to O. x. xanthaeolus but somewhat larger and having a skull with definitely larger audital bullae.”</p><p>Original dimensions. Total length: 325 mm; tail: 161 mm; hindfoot: 33 mm. Skull-greatest length: 44.8 mm; zygomatic breadth: 19.3 mm; breadth of braincase: 13.5 mm; interorbital space: 6.1 mm; nasals: 14.3 x 4.5 mm; diastema, 8.5 mm; palatine foramina: 7.3 mm; upper toothrow, 5.5 mm. Other craniodental measurements are in table 2.</p><p>Morphological description. Dorsal pelage soft, lax, dense and long; yellowish to ochraceous wool and cover hairs, intensely grizzled with brown guard hairs, resulting in dorsal color ochraceous cream grizzled with brown; venter grayish cream; tail slightly shorter than head and body length, densely covered with hairs, weakly bicolor, with large scales with approximately 18 scales/cm and without terminal tuft; pes covered by very long and white hairs; ungual tufts dense and long, white; interdigital and plantar pads developed, thenar and hypothenar fleshy; pinnae with few external hairs and with a creamy and yellowish coloration and inner hairs light yellow.</p><p>Skull very large and robust, with moderately long and broad rostrum (approximately 36% of skull length [LN/ ONL ratio]); zygomatic plate moderately projected anteriorly, not reaching beyond nasolacrimal capsule; rostral fossa very deep; moderately projected plate and very deep fossa, configuring a moderately deep and very wide zygomatic notch; interorbital region strongly diverging posteriorly, with strongly beaded supraorbital margins; zygomatic arches strongly divergent posteriorly, wider near the squamosal root; braincase elongated, with temporal margins squared, without crests; interparietal short and wide; fronto-squamosal suture contiguous with frontoparietal suture; alisphenoid strut absent; anastomotic channel present, configuring pattern 3 of carotid circulation (Voss 1988); parietals expanding over surface side of skull; postglenoid foramen apparently small; incisive foramen long, wider medially, with anterior and posterior margins slightly acute, posterior margin reaching anterocone of M1; posterior margin of zygomatic plate situated anterior to the alveolus of M1; palate intermediate, with deep posterolateral palatal pits recessed in deep and large palatine depressions; palate apparently without palatal excrescencies; mesopterygoid fossa perforated by very large sphenopalatine vacuities on the presphenoid and basisphenoid; auditory bulla large, with very short and narrow stapedial process.</p><p>Upper incisors opisthodont; upper molars with labial and lingual cusps arranged in opposite pairs; M1 with anteroloph short and narrow, almost entirely fused to anterocone; anterocone apparently with shallow anteromedian flexus; paracone connected medially to protocone; median mure more labially positioned, defining a long and deep hypoflexus; paracone connected labially to mesoloph, forming a small, round and labially positioned mesofosset; mesoloph moderately long, connected with median mure medially; mesoloph separated from metacone by metaflexus; M2 similar to M1, but with median mure more medially positioned; paracone connected medially to protocone; mesoloph long, connected labially to paracone, forming a small, rounded and slightly oblique mesofosset; M3 small, triangular.</p><p>Observations. According to Osgood (1944) specimens of O. xanthaeolus ica are in overall larger and have a large auditory bulla when compared with the O. xanthaeolus from nearby localities. After its original description, O. xanthaeolus ica remained as a subspecies of O. xanthaeolus until the early 1990’s, when Musser and Carleton (1993) synonymized it with O. xanthaeolus in the catalogue “Mammal Species of the World” (Wilson &amp; Reeder 1993).</p></div>	https://treatment.plazi.org/id/03B487F6FF80FFDAFF56FA4BFF68FA69	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.		MagnoliaPress via Plazi	Prado, Joyce Rodrigues Do;Percequillo, Alexandre Reis	Prado, Joyce Rodrigues Do, Percequillo, Alexandre Reis (2016): Systematic studies of the genus Aegialomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae): Annotated catalogue of the types of the species-group taxa. Zootaxa 4144 (4): 477-498, DOI: 10.11646/zootaxa.4144.4.2
