Marmosops cracens (Handley & Gordon, 1979)

Russell A. Mittermeier & Don E. Wilson, 2015, Didelphidae, Handbook of the Mammals of the World – Volume 5 Monotremes and Marsupials, Barcelona: Lynx Edicions, pp. 129-186 : 185

101.

Narrow-headed Slender Opossum

Marmosops cracens

French: Opossum menu / German: Capadare-Schlankbeutelratte / Spanish: Marmosa esbelta de cabeza afilada

Other common names: Narrow-headed Slender Mouse Opossum, Slim-faced Slender Mouse Opossum

Taxonomy. Marmosa cracens Handley & Gordon, 1979 ,

“ near Pastora (11°12’N, 68°37°'W), 150 m, 14 km ENE Mirimire, Falcon, Venezuela.”

This species is monotypic.

Distribution. N Venezuela (Falcon), known only from the type locality in the Mirimire and Capadare Mts.

Descriptive notes. Head-body 10.2-10.5 cm, tail 13.1-13.2 cm; weight 24-26-5 g. The Narrow-headed Slender Opossum has grayish brown dorsal fur, with scattered short white guard hairs on rump. Eyes are surrounded with ill-defined narrow eye-rings, mostly between eyes and nose. Tail length is ¢.130% of head—body length, tail has fur on about proximal 5 mm, and naked part is indistinctly bicolored, fuscous dorsally and yellowish-cream ventrally. Ventral fur is gray-based creamy white, with a faint yellowish cast; this color also appears on chin and lips and along a narrow median stripe on abdominal and inguinal regions. Fur is short and smooth. Forefeet and hindfeet are small and whitish. Ventral sides of forelimbs and hindlimbs are also whitish. Ears are fuscous and relatively large. Females probably lack a pouch, but number of mammae is unknown. Karyotype of the Narrowheaded Slender Opossum is unknown.

Habitat. Mature humid evergreen forest with vines and epiphytes and a closed subcanopy of 10 m and an irregular upper canopy of 25-30 m, at an elevation of ¢.150 m.

Food and Feeding. There is no information available for this species.

Breeding. There is no information available for this species.

Activity patterns. There is no information available for this species.

Movements, Home range and Social organization. The three known specimens of the Narrow-headed Slender Opossum were trapped on the ground, but little is known about its social behavior.

Status and Conservation. Classified as Data Deficient on The IUCN Red List. The Narrow-headed Slender Opossum is known from only three specimens from a single locality. There are no new recordssince it was described in 1979, and existing information is insufficient to assess any conservation status.

Bibliography. Gardner (2005), Gardner & Creighton (2007a), Handley & Gordon (1979).

Figures

76. Patagonian Opossum (Lestodelphys halli), 77. Karimi’s Fat-tailed Opossum (Thylamys karimii), 78. Dwarf Fat-tailed Opossum (Thylamys velutinus), 79. Elegant Fat-tailed Opossum (Thylamys elegans), 80. Pallid Fat-tailed Opossum (Thylamys pallidior), 81. Tate's Fat-tailed Opossum (Thylamys tatei), 82. Mesopotamian Fat-tailed Opossum (Thylamys citellus), 83. Dry Chaco Fat-tailed Opossum (Thylamys pulchellus), 84. Chacoan Fat-tailed Opossum (Thylamys pusillus), 85. Paraguayan Fat-tailed Opossum (Thylamys macrurus), 86. Argentine Fat-tailed Opossum (Thylamys sponsorius), 87. Buff-bellied Fat-tailed Opossum (Thylamys venustus), 88. Bishop's Slender Opossum (Marmosops bishop), 89. Junin Slender Opossum (Marmosops juninensis), 90. Delicate Slender Opossum (Marmosops parvidens), 91. Pantepui Slender Opossum (Marmosops pakaraimae), 92. Pinheiro’s Slender Opossum (Marmosops pinheiroi), 93. Handley’s Slender Opossum (Marmosops handleyi), 94. Gray Slender Opossum (Marmosops incanus), 95. Brazilian Slender Opossum (Marmosops paulensis), 96. Neblina Slender Opossum (Marmosops neblina), 97. Tschudi’s Slender Opossum (Marmosops impavidus), 98. Spectacled Slender Opossum (Marmosops ocellatus), 99. Creighton’s Slender Opossum (Marmosops creightoni), 100. White-bellied Slender Opossum (Marmosops noctivagus), 101. Narrow-headed Slender Opossum (Marmosops cracens), 102. Dusky Slender Opossum (Marmosops fuscatus), 103. Panama Slender Opossum (Marmosops invictus)

Distribution. N Venezuela (Falcon), known only from the type locality in the Mirimire and Capadare Mts.