Smithsonian National Museum of Natural History, North American Mammals
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Oryzomys alfaroi (Handleyomys alfaroi)

Alfaro's Oryzomys

Order: Rodentia
Family: Cricetidae


Conservation Status: Least Concern.

Oryzomys (Handleyomys) are mouselike rodents with coarse but not stiff fur. They have been called rice rats, but this is misleading, because they live in many places other than rice fields, and lived in those places long before rice was introduced to the Americas. They are often found near streams or in other moist places. Some have been trapped on the ground and some in houses. Their diets can include green leaves, fruits, seeds, and insects. Some also eat crustaceans and even small fish.
Recent publications suggest that several species in the Oryzomys group are distinctly different from others and merit a new genus. Handleyomys is the genus preferred by IUCN; MSW3 and ITIS continue to use Oryzomys.

Range: Head and Body: 86-118 mm; Tail: 100-140 mm

Range: 22-44 g


Allen, J.A, 1891. Bulletin of the American Museum of Natural History, 3:214.


Mammal Species of the World

Distribution of Oryzomys alfaroi (Handleyomys alfaroi)