Mosia nigrescens

Conservation: IUCN 2003 and IUCN / SSC Action Plan (2001) – Lower Risk (lc).

Sumber: Order Chiroptera - Family Emballonuridae

Distribution: New Guinea; New Ireland (Papua New Guinea); Kai Isls, Halmahera Isls, Schouten Isls, Sulawesi, Moluccas Isls; Waigeo Isl. (Prov. of Papua, Indonesia), Bismarck Arch. (Papua New Guinea); Solomon Isls; adjacent small islands.

Sumber: Order Chiroptera - Family Emballonuridae

DISTRIBUTION: New Guinea; Kei Isis, Halmahera Isis, Schouten Isis, Sulawesi, Amboina, and Buru (Indonesia); Bismarck Arch. (Papua New Guinea); Solomon Isis; adjacent small islands.

Sumber: Order Chiroptera

Habitat. Wide variety of lowland and montane primary and secondary habitats, including humid tropical broadleaf forests, mangroves, coconut groves, rural gardens, clearings, and villages from sea level to elevations of c. 1600 m. Food and Feeding. Dark Sheath-tailed Bats forage for very small insects aerially and gleaning off foliage from near ground level into canopies. Wingless ants were a major dietary component in one study of 44 stomach contents. Breeding. Female Dark Sheath-tailed Bats likely give birth to single young twice a year. In Papua New Guinea, pregnant females are reported in February, May, June, andJuly. Activity patterns. The Dark Sheath-tailed Bat is crepuscular and roosts under large leaves and fronds of palms, bananas, and ginger; in limestone cave entrances; and under rock overhangs and house roofs. Leaf roosts can be as low as 1 - 5 m aboveground. Dark Sheath-tailed Bats emerge in late afternoon twilight to forage in well-shaded forest understories. Movements, Home range and Social organization. When roosting in foliage, as is common, group size is regularly 2 - 6 individuals, with only one individual clinging to the leaf surface by its feet and thumbs and the others adpressed dorsum to venter in a stacked column. These small groups are composed of mixed sex adults and young. Four individuals roosted in such a manner under a fishtail palm (Caryota, Arecaceae) in Kau Wildlife Area, Madang, Papua New Guinea, and this behavior was thought to conserve heat and avoid going into torpor where forest shade temperatures are typically 10 - 12 ° C lower than body temperatures. Dark Sheath-tailed Bats are alert all day and instandy fly off if approached too closely.

Sumber: Emballonuridae

Status and Conservation. Classified as Least Concern on The IUCN Red List. The Dark Sheath-tailed Bat has a large distribution and presumably large and stable overall population, and it is tolerant of habitat modification. It occurs in protected areas including Kau Wildlife Area, Madang, Papua New Guinea.

Sumber: Emballonuridae

Descriptive notes. Head-body 30 - 45 mm, tail 7 - 17 - 5 mm, ear 9 - 15 mm, hindfoot 4 - 7 mm, forearm 30 - 1 - 37 - 9 mm; weight 2 - 5 - 5 - 7 g. The Dark Sheath-tailed Bat is one of the smallest bats in the world. It is sexually dimorphic in body size, with females larger than males. Subspecies solomonis tends to be slightly larger on average than papuana in New Guinea. Silky dorsum is uniformly pale to medium gray-brown (raw umber); venter is somewhat paler gray-brown or bufiy brown. Ear is narrow and blundy rounded at apex. Inner surface of pinna is ribbed and sparsely haired along medial margin. Tragus is longer than broad, with blunt tip. Muzzle is short and blunt, having widely separated nostrils at anterior end. Breeding males have long phallus, nearly equal in length to tibia. Dental formula is I 2 / 3, C 1 / 1, P 2 / 2, M 3 / 3 (x 2) = 34.

Sumber: Emballonuridae