Mathew, Pratheesh, et al. “A Survey of the Genus Theretra Hubner, 1819 (Lepidoptera: Sphingidae) from Kodaikanal Hills (Western Ghats), Tamil Nadu, India”. International Journal of Scientific Research in Biological Sciences, vol. 6, no. 1, Feb. 2019, pp. 253-62, https://ijsrbs.isroset.org/index.php/j/article/view/188.