By Paul Carter (22 Feb 2022). Revised 22 March 2022 to match the open access report lodged on Zenodo as:
CARTER, Paul. (2022). Alston’s Woolly Mouse Opossum, Marmosa alstoni (Didelphimorphia, Didelphidae), in Boquete, Panama. Zenodo. https://doi.org/10.5281/zenodo.6374907

SUMMARY
On 17 Feb 2022 at 9:00 PM I photographed Marmosa alstoni (Didelphimorphia, Didelphidae) in the Boquete area, Panama. Mammal Diversity Database (2022 v1.8) treat M. alstoni as endemic to Costa Rica, following the recent review of the M. alstoni complex by Voss et al. (2021). Following the taxonomy in Voss et al (2021) and their review of previous records in Panama it appears that this record in Boquete is the first photographic record of M. alstoni in Panama; and possibly the first confirmed record in Panama.