Thollon's red colobus

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

{{speciesbox

| name = Thollon's red colobus{{MSW3 Groves|pages=170|id=12100640}}

| status = VU

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Detwiler, K.M. |author2=Hart, J.A. |author3=Maisels, F. |author4=Thompson, J. |author5=Reinartz, G. |author6=Struhsaker, T.T. |date=2020 |title=Piliocolobus tholloni |volume=2020 |page=e.T18257A166598109 |doi=10.2305/IUCN.UK.2020-1.RLTS.T18257A166598109.en |access-date=12 November 2021}}

| genus = Piliocolobus

| species = tholloni

| authority = (A. Milne-Edwards, 1886)

| range_map = Distribution Piliocolobus species.png

| range_map_caption = Thollon's red colobus range shown in orange

}}

Thollon's red colobus (Piliocolobus tholloni), also known as the Tshuapa red colobus,{{cite book |last1=Kingdon |first1=J. |year=1997 |title=The Kingdon Guide to African Mammals |publisher=Academic Press Limited |location=London |isbn=0-12-408355-2}} is a species of red colobus monkey from the Democratic Republic of the Congo and lower Republic of the Congo. It is found south of Congo River and west of Lomami River. It had once been considered a subspecies of the P. badius. It was recognised as a distinct species by Dandelot in 1974, and this was followed by Groves in 2001, while others have suggested it should be considered a subspecies of P. rufomitratus.{{cite iucn | author = Oates, J.F. | author2 = Struhsaker, T. | author3 = Butynski, T.M. | author4 = De Jong, Y. | name-list-style=amp | year = 2008 | url = https://www.iucnredlist.org/details/39993/0 | title = Procolobus rufomitratus | access-date = 2008-11-27}}