FIGURE 8 in Morphological and molecular review of Jacob's Mountain Stream Keelback Opisthotropis jacobi Angel & Bourret, 1933 (Squamata: Natricidae) with description of a sibling species from northern Vietnam

FIGURE 8. Drawings showing the head scalation of the male holotype A) IEBR 4326 of Opisthotropis voquyi sp. nov. and of the female paratype B) IEBR 4327 (note that pre- and supraocular are fused). Drawings: T. Ziegler.Published as part of Ziegler, Thomas, David, Patrick, Ziegler, Tim N., Pham, Cuong T., Nguyen, Truong Q. & Le, Minh D., 2018, Morphological and molecular review of Jacob's Mountain Stream Keelback Opisthotropis jacobi Angel & Bourret, 1933 (Squamata: Natricidae) with description of a sibling species from northern Vietnam, pp. 476-496 in Zootaxa 4374 (4) on page 489, DOI: 10.11646/zootaxa.4374.4.2, http://zenodo.org/record/115669