A. alphonsehogei may attain a snout-to-vent length of about 28 cm (11 in) in females, and about 22 cm (8.7 in) in males. Dorsally, it is brown to grayish black, with a cream-colored incomplete occipital collar. Ventrally, it is cream-colored, with a dark line running down each side of the belly, near the ends of the ventrals. Each smooth dorsal scale has one, or rarely two, apical pits. The dorsal scales are arranged in 17 rows throughout the whole length of the body (17/17/17). Mature males have tubercles in the cloacal region.[2]
^Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN978-1-4214-0135-5. (Atractus alphonsehogei, p. 6; Hoge, p. 125).
Further reading
Cunha OR, Nascimento FP (1983). "Ofidios da Amazonia 20 – As especies de AtractusWagler, 1828, na Amazonia oriental & Maranhão (Ophidia, Colubridae)". Boletim do Museu Paraense Emilio Goeldi, Nova Serie, Zoologia (123): 1–38. (Atractus alphonsehogei, new species). (in Portuguese).
Martins M, Oliveira ME (1993). "The snakes of the genus AtractusWagler (Reptilia: Squamata: Colubridae) from the Manaus region, central Amazonia, Brazil". Zoologische Mededelingen67: 21–40.