<documentid="EBDB91570D7F40430AD348CAE37607E1"ID-DOI="10.5281/zenodo.6685333"ID-GBIF-Dataset="b488d6b0-2108-4c9b-ba79-458efc034cf9"ID-ISBN="978-84-96553-99-6"ID-Zenodo-Dep="6685333"IM.illustrations_approvedBy="tatiana"IM.materialsCitations_approvedBy="tatiana"IM.metadata_approvedBy="tatiana"IM.taxonomicNames_approvedBy="tatiana"checkinTime="1655902366516"checkinUser="tatiana"docAuthor="Astúa, D."docDate="2015"docId="F723B76CFFDAFFF1FF1B170AFB1C84AE"docLanguage="en"docName="hbmw_5_Didelphidae_0070.pdf.imf"docOrigin="Handbook of the Mammals of the World – Volume 5 Monotremes and Marsupials, Barcelona: Lynx Edicions"docTitle="Didelphis pernigra J. A. Allen 1900"docType="treatment"docVersion="9"lastPageNumber="162"masterDocId="0B1ACF14FFFBFFD0FFAB161FFFFD8C61"masterDocTitle="Didelphidae"masterLastPageNumber="186"masterPageNumber="129"pageNumber="162"updateTime="1720181789988"updateUser="tatiana">
<vernacularNameid="F1897654FFDAFFF1FF53170AFC838D22"ID-CoL="6D58Q"authority="J. A. Allen, 1900"authorityName="J. A. Allen"authorityYear="1900"box="[248,894,277,323]"class="Mammalia"family="Didelphidae"genus="Didelphis"kingdom="Animalia"language="eng"order="Didelphimorphia"pageId="33"pageNumber="162"phylum="Chordata"rank="species"species="pernigra">Andean White-eared Opossum</vernacularName>
<taxonomicNameid="B88A7DF9FFDAFFF1FC69170AFAF18D22"ID-CoL="6D58Q"authority="J. A. Allen, 1900"authorityName="J. A. Allen"authorityYear="1900"box="[962,1292,277,323]"class="Mammalia"family="Didelphidae"genus="Didelphis"kingdom="Animalia"order="Didelphimorphia"pageId="33"pageNumber="162"phylum="Chordata"rank="species"species="pernigra">
<vernacularNameid="F1897654FFDAFFF1FEAF174AFE2B8D0B"ID-CoL="6D58Q"authority="J. A. Allen, 1900"authorityName="J. A. Allen"authorityYear="1900"box="[260,470,341,362]"class="Mammalia"family="Didelphidae"genus="Didelphis"kingdom="Animalia"language="fra"order="Didelphimorphia"pageId="33"pageNumber="162"phylum="Chordata"rank="species"species="pernigra">Opossum des Andes</vernacularName>
<vernacularNameid="F1897654FFDAFFF1FDE5174AFD0A8D0B"ID-CoL="6D58Q"authority="J. A. Allen, 1900"authorityName="J. A. Allen"authorityYear="1900"box="[590,759,341,362]"class="Mammalia"family="Didelphidae"genus="Didelphis"kingdom="Animalia"language="deu"order="Didelphimorphia"pageId="33"pageNumber="162"phylum="Chordata"rank="species"species="pernigra">Anden-Opossum</vernacularName>
<vernacularNameid="F1897654FFDAFFF1FCDA174AFB338D0B"ID-CoL="6D58Q"authority="J. A. Allen, 1900"authorityName="J. A. Allen"authorityYear="1900"box="[881,1230,341,362]"class="Mammalia"family="Didelphidae"genus="Didelphis"kingdom="Animalia"language="esp"order="Didelphimorphia"pageId="33"pageNumber="162"phylum="Chordata"rank="species"species="pernigra">Zarigueya de orejas blancas andina</vernacularName>
<emphasisid="4DFEDA68FFDAFFF1FF041762FE5B8DF3"bold="true"box="[175,422,381,402]"pageId="33"pageNumber="162">Other common names:</emphasis>
<vernacularNameid="F1897654FFDAFFF1FE051762FD9E8DF3"ID-CoL="6D58Q"authority="J. A. Allen, 1900"authorityName="J. A. Allen"authorityYear="1900"box="[430,611,381,402]"class="Mammalia"family="Didelphidae"genus="Didelphis"kingdom="Animalia"language="eng"order="Didelphimorphia"pageId="33"pageNumber="162"phylum="Chordata"rank="species"species="pernigra">Andean Opossum</vernacularName>
<taxonomicNameid="B88A7DF9FFDAFFF1FC6917A1FCA58E66"ID-CoL="6D58Q"authority="J. A. Allen, 1900"authorityName="J. A. Allen"authorityYear="1900"class="Mammalia"family="Didelphidae"genus="Didelphis"kingdom="Animalia"order="Didelphimorphia"pageId="33"pageNumber="162"phylum="Chordata"rank="species"species="pernigra">Didelphis pernigra J. A. Allen, 1900</taxonomicName>
<paragraphid="7F35067AFFDAFFF1FCBF147FFB828E1C"blockId="33.[787,1381,446,873]"box="[788,1151,608,637]"pageId="33"pageNumber="162">This species is monotypic.</paragraph>
Head-body 34-44 cm, tail 32-41.2 cm; weight 0-72.2 kg. Skull shape of the Andean White-eared Opossum is sexually dimorphic. Its dorsal fur, except for head,is intense shiny black, with two distinct layers: soft woolly underfur consisting of pale yellowish-white hairs (on their basal one-half) with black tips, under abundant long, not very stiff, entirely black guard hairs. White part of underfur is concealed underneath dense black outer coat. Head is white, with a clearly marked black eye mask from nose through a little behind eyes, and then continuing to bases of ears as an ill-defined dusky line. Cheeks are rusty buff or white, and there is a black line on center of forehead, narrowing to a point between eyes. Tail length is about the same as head-body length or slightly shorter, and tail is basally furred, black on proximal two-fifths to three-fifths, and white on rest. Ventral fur is buffy white, with black-tipped hairs; throat is rusty buff. Feet are black, and ears are large, entirely pinkish-white in living individuals (yellowish-white in dried skins), contrasting sharply with black dorsal fur. Females have a pouch, but number of mammae is unknown. The Andean White-eared Opossum has a 2n = 22, FN = 20 karyotype, with all acrocentric autosomes, and small acrocentric X-chromosome and Y-chromosome.
Lower montane wet and dry forested habitats from at least elevations of 1500 m in the Andes. The Andean White-eared Opossum is also found in subparamos and paramos in Venezuela and at lower elevations in riparian habitats in the arid Pacific lowlands of Peru. It is a generalist and occurs in secondary forests, open lands, cultivated areas, and suburban areas.
In Mérida, Venezuela, reproductively active female Andean White-eared Opossums were observed in February-March and then in June-July, with litters of five young (when present). In Colombia, gestation was estimated at c.12 days, and mean litter size was of 4-2 young, ranging from two to seven young.
<emphasisid="4DFEDA68FFDAFFF1FF1B116EFC7D8BF3"bold="true"box="[176,896,1905,1938]"pageId="33"pageNumber="162">Movements, Home range and Social organization.</emphasis>
Classified as Least Concern on The IUCN Red List. The Andean White-eared Opossum has a widespread distribution, presumably a large overall population, and occurs in several protected areas.
Allen (1900, 1902), Astua (2010), Barrera-Nino & Sanchez (2014), Cerqueira (1985), Cerqueira & Tribe (2007), Durant (2002), Gardner (2005), Handley (1976), Lemos & Cerqueira (2002), Mondolfi & Pérez-Hernandez (1984), Palma & Yates (1996), Tyndale-Biscoe & Mackenzie (1976), Ventura et al. (2002).
