Overview
The Highland Streaked Tenrec (Hemicentetes nigriceps) is an extraordinary afrotherian mammal native exclusively to the misty montane plateau of central Madagascar. Easily distinguished by its conspicuous black-and-white spiny coat and elongated probing snout, this small insectivore is one of only two mammal species known to communicate using stridulation—rubbing specialized barbed quills together to produce acoustic chatter.
Biology and Physical Characteristics
Hemicentetes nigriceps possesses a stout, rounded body covered in a dense combination of soft woolly fur and sharp detachable quills. Unlike its lowland counterpart which displays bright yellow striping, the highland species features bold, pure-white longitudinal stripes contrasting against a coal-black head and body. Along the middle of its back, it carries an array of 7 to 16 specialized quills (the stridulating organ) that rub together via muscular contractions to emit ultrasonic clicks and chirps audible to conspecifics.
Behavior and Ecology
Active both day and night, the Highland Streaked Tenrec is a diligent excavator of moist mountain soils. Using its elongated mobile snout and robust foreclaws, it roots through wet humus to dislodge earthworms, which it subdues by pinning them with its forepaws and shaking violently. During the cold austral winter from May to October, individuals retreat into shallow burrow networks to undergo torpor, drastically reducing body temperature and metabolic expenditure.
Conservation and Human Impact
Assessed as Least Concern, Hemicentetes nigriceps remains locally abundant due to its ability to tolerate forest degradation and colonize agricultural landscapes, such as cassava and potato fields, where earthworms are plentiful. Nonetheless, extensive deforestation caused by slash-and-burn agriculture (tavy) and charcoal burning erodes natural forest remnants in the central highlands. Continued protection of national parks across the central spine of Madagascar safeguards core populations.
Interesting Factoid
The Highland Streaked Tenrec is one of the only mammals in the world that can produce sound without vocal cords: it rubs a cluster of specialized quills on its back together like a cricket to ‘stridulate’ secret ultrasonic messages to its family.
Last updated: October 2026