Collins' squirrel monkey

{{Short description|Species of New World monkey}}

{{Speciesbox

| name = Collins' squirrel monkey

| image = Saimiri-collinsi.jpg

| status = LC

| status_system = IUCN3.1

| status_ref ={{cite iucn |author=Silva Júnior, J.S. |author2=Ravetta, A.L. |author3=Lynch Alfaro, J.W. |author4=Valença-Montenegro, M.M. |date=2021 |title=Saimiri collinsii |volume=2021 |page=e.T70610928A192585417 |doi=10.2305/IUCN.UK.2021-1.RLTS.T70610928A192585417.en |access-date=26 July 2022}}

| genus = Saimiri

| species = collinsi

| authority = (Osgood, 1916)

| range_map = Distribution Saimiri.png

| range_map_caption = Collins' squirrel monkey range shown in red

}}

Collins' squirrel monkey (Saimiri collinsii) is a species of squirrel monkey endemic to Brazil. It had been considered a subspecies of the common squirrel monkey (S. sciureus) until a genetic study by Jessica Lynch Alfaro et al. elevated it to species status.{{cite book|title=All the World's Primates|author=Stone, Anita I. |display-authors=etal |editor=Rowe, Noel |editor2=Myers, Marc|pages=307–308|year=2016|publisher=Pogonias Press|isbn=9781940496061}}{{cite journal|title=Biogeography of squirrel monkeys (genus Saimiri): South-central Amazon origin and rapid pan-Amazonian diversification of a lowland primate|author=Lynch Alfaro, J.W.|display-authors=etal|pages=436–454|journal=Molecular Phylogenetics and Evolution|volume=82|year=2015|doi=10.1016/j.ympev.2014.09.004|pmid=25305518|doi-access=free}}

Male Collins' squirrel monkeys have a head and body length of about {{cvt|38|cm|in|lk=on}} with a {{cvt|37.6|cm|in}} tail. Females have a head and body length of about {{cvt|27|cm|in}} with a {{cvt|41.3|cm|in}} tail. Collins' squirrel monkeys eat palm fruits, legumes, insects, bird eggs and occasionally lizards.