67 urn:lsid:arphahub.com:pub:0EB7B745-BA33-591F-8755-8E4C5B0D1E08 urn:lsid:zoobank.org:pub:46D8CEF4-19D6-4C04-A352-F60839BA3C4F Check List CheckList 1809-127X Pensoft Publishers 10.15560/20.2.518 112991 Notes on Geographic Distribution Animalia Cercopithecidae Primates Asia Borneo Malaysia First recorded sighting of the Critically Endangered Tricolour Langur, Presbytis chrysomelas cruciger (Thomas, 1892) (Primates, Cercopithecidae), in Jemoreng Protected Forest, Sarawak, Malaysia Ampeng Ahmad 1 Conceptualization Writing - original draft Investigation Methodology Mohammad Hamden 1 Funding acquisition Project administration Liam Jack 1 2 Funding acquisition Project administration George-Pau Madeline 1 Funding acquisition Project administration Osman Syafiani 1 Investigation Methodology Jinggong Emy Ritta 1 Investigation Methodology Borhan Roslan 1 Investigation Methodology Hassim Ishak 1 Investigation Methodology Abdul-Rahman Mohammad Fardy 1 Investigation Methodology Md-Nor Shukor 2 Methodology Traeholt Carl 3 Methodology Md-Zain Badrul Munir abgbadd1966@yahoo.com https://orcid.org/0000-0003-4037-8115 2 Conceptualization Writing - review and editing Validation Forest Department Sarawak, Kuching, Malaysia Forest Department Sarawak Kuching Malaysia Universiti Kebangsaan Malaysia, Bangi, Malaysia Universiti Kebangsaan Malaysia Bangi Malaysia Copenhagen Zoo, Frederiksberg, Denmark Copenhagen Zoo Frederiksberg Denmark

Corresponding author: Badrul Munir Md-Zain (abgbadd1966@yahoo.com).

Academic editor: Virat Jolli

 2024 27 03 2024 20 2 518 523 5D90027B-0BDA-5D7F-9074-05DF1DEB0439 20 09 2023 18 03 2024 Ahmad Ampeng, Hamden Mohammad, Jack Liam, Madeline George-Pau, Syafiani Osman, Emy Ritta Jinggong, Roslan Borhan, Ishak Hassim, Mohammad Fardy Abdul-Rahman, Shukor Md-Nor, Carl Traeholt, Badrul Munir Md-Zain This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Presbytis chrysomelas cruciger (Thomas, 1892) is a Critically Endangered langur subspecies that has rarely been studied due to the difficulty of encountering it in the wild. Previously, this subspecies was sighted in Maludam National Park, Sarawak, Malaysian Borneo. Here, we provide the first sighting record of P. c. cruciger in Jemoreng Protected Forest in Sarawak, where a total of eight groups were observed. We urge for further comprehensive studies and immediate conservation action.

 Forest Department Sarawak, Sarawak State, Universiti Kebangsaan Malaysia