Hognose snakes - famous for their funny expressions and death-feigning, but why do Eastern hognoses come in different colours, and are some populations smaller than others? We find out, followed up by a brand new species of amphibian.

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Main Paper References:

Lattanzio, M. S., & Buontempo, M. J. (2021). Ecogeographic Divergence Linked to Dorsal Coloration in Eastern Hog-Nosed Snakes (Heterodon platirhinos). Herpetologica, 77(2), 134–145. https://doi.org/10.1655/Herpetologica-D-19-00031.1

Vanek, J. P., & Burke, R. L. (2020). Insular dwarfism in female eastern hog-nosed snakes (Heterodon platirhinos; dipsadidae) on a barrier island. Canadian Journal of Zoology, 98(3), 157–164. https://doi.org/10.1139/cjz-2019-0137

Species of the Bi-Week:

De Oliveira, R. F., de Medeiros Magalhães, F., da Veiga Teixeira, B. F., de Moura, G. J. B., Porto, C. R., Guimarães, F. P. B. B., Giaretta, A. A., & Tinoco, M. S. (2021). A new species of the Dendropsophus decipiens Group (Anura: Hylidae) from Northeastern Brazil. PLoS ONE, 16(7 July), 1–23. https://doi.org/10.1371/journal.pone.0248112

Other Mentioned Papers/Studies:

Malayan krait spatial ecology pre-print: https://www.biorxiv.org/content/10.1101/2021.09.08.459477v1.full.pdf 

Music:

Intro/outro – Treehouse by Ed Nelson

Species Bi-week theme – Mike Mooney

Other Music – The Passion HiFi, www.thepassionhifi.com