Von der Decken's sifaka

{{Short description|Species of lemur}}

{{Speciesbox

| name = Von der Decken's sifaka

| taxon = Propithecus deckenii

| authority = W. Peters, 1870 {{cite web | url=https://www.mammaldiversity.org/explore.html#genus=PROPITHECUS&species=deckenii&id=1000985 | title=Explore the Database }}{{cite book|last1= Beolens|first1= Bo|last2= Watkins|first2= Michael|last3= Grayson|first3= Michael|date= 2009|title= The Eponym Dictionary of Mammals|publisher= The Johns Hopkins University Press|page= 104|isbn=978-0801893049}}

| image = Von der Deckens sifaka 09.JPG

| status = CR

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=King, T. |author2=Rakotonirina, L. |date=2020 |title=Propithecus deckenii |volume=2020 |page=e.T18357A115572684 |doi=10.2305/IUCN.UK.2020-2.RLTS.T18357A115572684.en |access-date=19 November 2021}}

| status2 = CITES_A1

| status2_system = CITES

| status2_ref =

| range_map = Propithecus deckenii range map.svg

| range_map_caption = Distribution of P. deckenii

}}

Von der Decken's sifaka (Propithecus deckenii) is a sifaka lemur that is endemic to the arid, deciduous and spiny succulent forests of Western Madagascar. It has a length of 92 to 107 centimeters, of which 42-48 centimeters are tail.{{cite book|title=Mammals of Madagascar, A Complete Guide|author=Garbutt, Nick|year=2007|pages=196–197}} The species is named in honor of the German explorer Karl Klaus von der Decken.

Its pelage is usually creamy white, with tinges of yellow-gold, silver-grey or pale brown on the neck, shoulders, back and limbs. The face is entirely black. Group size is between two and ten individuals, with groups of three to six being the most common.

The IUCN lists its status as critically endangered, and it is listed in CITES Appendix I.{{cite web | url = http://checklist.cites.org/#/en/search/scientific_name=Propithecus | title = Checklist of CITES Species | website = CITES | publisher = UNEP-WCMC | access-date = 18 March 2015}}

File:Propithecus deckenii1.jpg

File:Propithecus deckenii - profile - Tsingy.jpg

File:Propithecus deckenii2.jpg