Cyclopes

Cyclopes: The Pygmy Anteater

The silky anteater, also known by the common name pygmy anteater, is the smallest of all known anteater species and belongs to the genus Cyclopes. Traditionally considered a single species, Cyclopes didactylus, recent taxonomic research suggests that this genus may encompass at least seven distinct species. These small mammals are found across a wide range, from southern Mexico through Central and South America, including the island of Trinidad. Their distinctive adaptations for an arboreal lifestyle and their nocturnal habits make them elusive inhabitants of the neotropical rainforests.

Physical Characteristics

Silky anteaters are characterized by their dense, soft fur, which ranges in color from gray to yellowish and possesses a silvery sheen. Many subspecies exhibit dark, often brownish, streaks. They have proportionately shorter faces and larger crania compared to other anteaters. Adult lengths typically range from 36 to 45 cm (14 to 18 in), including a tail of 17 to 24 cm (6.7 to 9.4 in), with weights varying from 175 to 400 g (6.2 to 14.1 oz). Anatomically, they possess unique adaptations for their arboreal existence, including highly modified hind feet for climbing and partially prehensile tails. Their forefeet feature claws on the second and third toes, with the third toe being notably larger. The species also has broad, flat ribs that overlap to create an internal armored casing protecting their chest.

Habitat and Behavior

These anteaters inhabit a variety of forest types, including semi-deciduous, tropical evergreen, and mangrove forests, typically found from sea level up to 1,500 meters (4,900 ft). They are entirely arboreal and nocturnal, with their activity centered in lowland rainforests that have a continuous canopy, allowing them to move between trees without descending to the ground. Silky anteaters are slow-moving creatures. Their diet primarily consists of ants, and they also feed on wasps and wasp pupae, often attacking nests at night when the insects are less active. Occasionally, they may consume other insects like termites and small beetles, and fruits have been observed in their diet when in captivity. They are solitary animals and give birth to a single young, which is often left in a nest of dead leaves while the mother forages. When threatened, silky anteaters will stand on their hind legs and use their sharp foreclaws for defense.

Taxonomy and Distribution

The genus Cyclopes forms a sister clade to the myrmecophagid anteaters, together constituting the suborder Vermilingua, which in turn is sister to the sloths (Folivora), forming the order Pilosa. Historically, Cyclopes didactylus was considered a single species with several subspecies. However, a comprehensive taxonomic review in 2017, utilizing molecular and morphological data, proposed that Cyclopes may comprise at least seven species. The distribution of silky anteaters spans from southern Mexico through Central America (excluding El Salvador) and extends south to Ecuador, northern Peru, Bolivia, and Brazil. A distinct population is found in the Atlantic Forest of eastern Brazil, and they are also present on the island of Trinidad. The only known extinct cyclopedid species is Palaeomyrmidon incomtus, dating back to the Late Miocene of Argentina.