Proboscis Bat (Rhynchonycteris naso) lives in tropical rainforest across Central and South America. It feeds on insects and fruit. Its conservation status is Least Concern.
Fascinating facts about the Proboscis Bat
- The proboscis bat is the sole representative of its genus, making it taxonomically unique among bats. It belongs to the sac-winged family Emballonuridae, a group of sheath-tailed species. This single-species genus occurs across a wide stretch of Central and South America, from southern Mexico through Brazil and Trinidad. Its exclusive status highlights a distinct evolutionary lineage within the region's bat fauna.
- During daylight hours proboscis bats roost in a striking line, nose-to-tail, on a branch or wooden beam, forming a straight row. They are nocturnal, so this formation provides a compact resting spot while they sleep. Colonies are small, usually five to ten individuals, and they habitually choose sites near wetlands or riparian forests. Such roosting near water allows quick access to their preferred feeding patches at dusk.
- Typical proboscis bat colonies contain only five to ten individuals, and groups larger than forty are exceptional. These small groups maintain stable, year-round harems rather than seasonal breeding assemblies. Each female gives birth to a single offspring, which she raises before both sexes disperse at two to four months old. This social structure supports consistent use of a regular water-based feeding area throughout the year.
- Occasionally a proboscis bat falls victim to the large spider Argiope submaronica. This rare event is noteworthy because the bat is extremely lightweight, with individuals weighing only 2.1-4.3 g and females up to 6 g when pregnant.
- Colonies habitually return to a tiny water patch where they scoop up midges, mosquitoes, beetles and caddisflies. At dusk the bats emerge from their roosts and use echolocation to locate and capture these insects over the water surface. Their diet includes midges such as chironomids, which are abundant in the wet habitats they frequent. This feeding routine is repeated nightly, linking their foraging success directly to the presence of small aquatic ecosystems.
Sources
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At a glance
RangeCentral and South America
HabitatTropical rainforest
DietInsects and fruit
About the Proboscis Bat
In the twilight skies above the tropical rainforest, the proboscis bat emerges as a whispered rumor, its leathery wings beating in a slow, hypnotic rhythm as it navigates the dense canopy with ease. With its extravagantly long nose, this curious creature is a master of the night, using its acute sense of echolocation to pluck juicy insects from the darkness, its very presence a testament to the boundless ingenuity of evolution. As it flits and weaves through the shadows, the proboscis bat embodies the mysterious, unseen world of the nocturnal, a realm of wonder that unfolds beneath the starry veil of night.
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