COMPARATIVE MORPHOLOGY OF THE SNAKE SPECTACLE OF PSAMMOPHIS SIBILANS AND SPALEROSOPHIS DIADEMA BY USING ANATOMICAL AND HISTOLOGICAL STUDIES | ||
| Egyptian Journal of Zoology | ||
| Articles in Press, Accepted Manuscript, Available Online from 26 September 2025 PDF (1.01 M) | ||
| Document Type: Original Research Papers | ||
| DOI: 10.21608/ejz.2025.411418.1135 | ||
| Authors | ||
| Nahed A. Shawki1; Samia A. Gabr2; Amany S. Saad* 2; Fatma A. Mahmoud1 | ||
| 1Zoology Department, Faculty of Science, Assiut University, Assiut, Egypt | ||
| 2Zoology Department, Faculty of Science, Aswan University, Aswan, Egypt | ||
| Abstract | ||
| A morphological description of the spectacle of two snakes (Psammophis sibilans and Spalerosophis diadema) Periocular scales of both the snake species surround the eye opening. These scales are connected with the eye through the spectacle, and are formed of preocular, postocular, supraocular, and subocular scales. Morphologically, four types of periocular scales in the studied snakes exhibit variability in shape, color, and number. In P. sibilans, the preocular scale has an irregular shape with black and little white color. The postocular scales consist of two small scales with rectangular shape and black color. The supraocular scale is one large scale with a plate-like shape and black color. The subocular scales are two, and have a rectangular shape with white and little black color. In S. diadema, preocular scales are three with different sizes and brown color. The postocular scales are three small that have triangular shapes with brown color. The supraocular scale is one large, plate-like with brown color. The subocular scales are four, and have a triangular shape with brown and white color. Both snakes’ spectacles have the same histological structure. The spectacle is comprised of triple-layers, and connects to the inner surface of the periocular scales through a transition zone, which enters into an integumental hinge region. | ||
| Keywords | ||
| Periocular scales; Psammophis sibilans; Snake; Spalerosophis diadema; Spectacle | ||
|
Statistics Article View: 57 PDF Download: 24 |
||
