Hystrix crassispinis

Habitat. Primary lowland rainforest, old and young secondary forest, and open areas up to elevations of 1200 m in East Kalimantan, Indonesia.

Sumber: Hystricidae

Movements, Home range and Social organization. There is no information available for this species.

Sumber: Hystricidae

Status and Conservation. Classified as Least Concern on The IUCN Red List. Endemic island rodents such as the Thick-spined Porcupine may be particularly at risk of extinction and require further study.

Sumber: Hystricidae

Descriptive notes. Head-body 450 - 665 mm, tail 65 - 190 mm, ear 35 - 42 mm, hindfoot 80 - 90 mm; weight 3.8 - 5.4 kg. The Thick-spined Porcupine is medium-sized and brown, with extremely thick quills. It is the largest species in the subgenus Thecurus, with the largest quills, tactile bristles, and rattle-quills. It appears distinctly speckled by white tips of spines on cheeks, neck, shoulders, flanks, and sometimes anterior of back. Some large defensive quills on posterior of back have white tips ¢. 25 - 65 mm long, while others are blackish up to their tips. Number of white-tipped quillsis larger than number of black quills; number of tactile bristles is small. As with other species in the subgenus Thecurus, there is no crest on head. Thick quills reach up to 8: 3 mm in diameter, making them thicker than those in the largest specimens of subgenus Acanthion and as thick as those in subgenus Hystrix. Tail is short, with ratio of tail-to-head-body length less than 20 %, and it has rattle-quills. Lengths of hollow capsule-like parts of rattle-quills are 12 - 16 mm. Long quills of hindquarters are dark brown, with fairly narrow white tips and bases, and quills beneath tail are brown and white. The Thick-spined Porcupine can be differentiated from the Sumatran Porcupine (H. sumatrae) byits larger skull with slightly longer nasals, longer rattle-quills, thicker quills, and largertactile bristles.