Ecuadorian Squirrel Monkey
Saimiri macrodon
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassMammalia (Mamífers)
- OrderPrimates
- FamilyCebidae (Cebid Monkeys)
- GenusSaimiri (Squirrel Monkeys)
- SpeciesSaimiri macrodon (Ecuadorian Squirrel Monkey)
The Ecuadorian squirrel monkey (Saimiri cassiquiarensis macrodon) is a type of squirrel monkey. It had been considered a subspecies of the Guianan squirrel monkey, Saimiri sciureus, but was elevated to a full species, S. macrodon, based on a 2009 study by Carretero-Pinzón, et al. Based on subsequent genetic research by Jessica Lynch Alfaro, et al it was again reclassified as a subspecies of Humboldt's squirrel monkey. The Ecuadorian squirrel monkey lives in the western Brazilian Amazon, as well as southern Colombia, eastern Ecuador and northern and eastern Peru. It lives in humid tropical and subtropical forest, preferring dense forest but able to live in secondary forest and disturbed forest as well. It can live at elevations up to 1,200 m (3,900 ft), but where it has been studied in Ecuador it prefers elevations under 500 m (1,600 ft). Wikipedia →
50–60% of wildlife watchers report a Ecuadorian Squirrel Monkey sighting in Yasuní National Park, based on 175 days of visitor records from GBIF citizen-science data.
Closest Relatives at Yasuní National Park
Marañón white-fronted capuchin
Cebus yuracus
Common Woolly Monkey
Lagothrix lagothricha
Colombian Red Howler Monkey
Alouatta seniculus
Golden-mantled Tamarin
Leontocebus tripartitus
White-tailed Titi
Plecturocebus discolor
Western Pygmy Marmoset
Cebuella pygmaea
Napo Saki
Pithecia napensis
Long-haired Spider Monkey
Ateles belzebuth
Black-mantled Tamarin
Leontocebus nigricollis
Noisy Night Monkey
Aotus vociferans
Lucifer Titi
Cheracebus lucifer
Miller's Saki
Pithecia milleri
📅 Monthly Probability
☀️ When They're Spotted
Most active during daytime hours (6am–6pm) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
| # | Park | Country | Probability |
|---|---|---|---|
| 1 | Cuyabeno Wildlife Reserve | 🇪🇨 Ecuador | |
| 2 | Yasuní National Park | 🇪🇨 Ecuador | |
| 3 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 4 | Sierra de la Macarena National Park | 🇨🇴 Colombia |
Quick answers
What are the chances of seeing a Ecuadorian Squirrel Monkey in Yasuní National Park?
About 54% of wildlife watchers report a Ecuadorian Squirrel Monkey sighting in Yasuní National Park, based on 175 days of visitor records from GBIF citizen-science data.
When is the best time to see Ecuadorian Squirrel Monkey in Yasuní National Park?
August has the highest sighting rate for Ecuadorian Squirrel Monkey in Yasuní National Park in our monthly data.