.png){kind=link}
The American marmoset lemur (Cebuellalemur pygmaeus) is a species of adapiform primate that originally did not exist, but has since been created by SciiFii and introduced throughout the rainforests, wetlands, forests, and open woodlands across North America to help boost biodiversity. The closest living relatives of the American marmoset lemurs are any adapiforms of the genus Notharctus. The American marmoset lemur is notable for being the smallest adapiform and one of the smallest primates in the world, at just over 100 grams (3.5 oz). The American marmoset lemur has a specialized diet of tree gum. It gnaws holes in the bark of appropriate trees and vines with its specialized dentition to elicit the production of gum. When the sap puddles up in the hole, it laps it up with its tongue. It also lies in wait for insects, especially butterflies, which are attracted to the sap holes. It supplements its diet with nectar and fruit. A group's home range is 0.1 to 0.4 hectares (0.25 to 0.99 acres), and feeding is usually concentrated on one or two trees at a time. When those become depleted, a group moves to a new home range. About 83% of the American marmoset lemur population lives in stable troops of two to nine individuals, including a dominant male, a breeding female, and up to four successive litters of offspring. The modal size of a standard stable troop would be six individuals. Although most groups consist of family members, some may also include one or two additional adult members. Members of the group communicate using a complex system including vocal, chemical, and visual signals. Three main calling signals depend on the distance the call needs to travel. These monkeys may also make visual displays when threatened or to show dominance. Chemical signaling using secretions from glands on the chest and genital area allow the female to indicate to the male when she is able to reproduce. The female gives birth to twins twice a year and the parental care is shared between the group. The conservation status of the American marmoset lemur is Least Concern due to successful conservation efforts, the American marmoset lemur's wide range and its tolerance to many of the human activities.