17 Fahd Mohammed Abd Al Galil Journal of Animal and Plant Sciences JAPS 20232023/03/24 33 2 434-439 1018-7081 https://doi.org/10.36899/JAPS.2023.2.0635 <p>Many dipteran larvae are myiasis causing agents. These larvae can invade human and animal tissue. Nasal myiasis is caused by the larvae of&nbsp;<em>Oestrus ovis</em>&nbsp;(Diptera: Oestridae). Livestock raising is a tradition passed through generations and is practiced by the rural people in Yemen, especially in villages for economic earnings by selling them or slaughtering them as a source of meat. In a village Al-Khanf, Aridat Shari at Same'a District, Taiz Governorate, goats, sheep, and cows were sacrificed on Eid Al-Adha in 2021. About 50 larvae were recovered from the nasal canals of four sacrificed goats, 10 of which were placed in containers containing 50 ml of surgical alcohol 70% and brought to the laboratory. The larvae were dissected under a microscope.&nbsp;<em>Following the identification keys,</em>&nbsp;the posterior spiracles were mounted under the light microscope. The larvae were identified as sheep botfly<em>&nbsp;O. ovis</em><em>&nbsp;larvae. This is the first report of existence of&nbsp;</em><em>O.&nbsp;</em><em>ovis</em><em>&nbsp;in Yemen, since no previously reported evidence of this fly in Yemen.</em></p> Nasal myiasis, Oestrus ovis, Sheep Botfly, Oestridae, Taiz City, Yemen Pakistan Agricultural Scientists Forum https://thejaps.org.pk/AbstractView.aspx?mid=2022-JAPS-318