Dr. Kassai Tibor - Dr. Murai Éva szerk.: Parasitologia Hungarica 7. (Budapest, 1974)

from the Gyula,] forestry (Gyulaji Állami Erdő- és Vadgazdaság, Comitat Tolna), 9 deers (Capreolus capreolus) from 6 different areas in Comitat

s Tolna, Komárom and Pest, as well as 2 moufflons (Ovis musimon) from the Budakeszi area (Table l). As far as it was possible the whole respiratory complex, in a few cases, however, either the nasal-throat cavity or the throat-trachea-bronchial complex was examined. The collected larvae were preserved either in 70% spirit, or in BARBAGALLO solution

. Results All species were found infested by nasal throat bot fly larvae. Data are summarized in Table 1. In the average Sl'1% of the 120 examined animals harboured parasites.Red deers and fallow deers were infected in 98*2 and 19*2%, respectively. The intensity of the infection varied from 2 to 148, and from 1 to 13 in red deers and fallow deers, respectively. The whole respiratory system of 19 red deers were examined. First stage larvae have been found in 16 individuals both on the nasal and tracheal mucous membrane as well as on the mucous membrane of the bronchial tube

. Larvae found in the nasal cavity are usually immobile lying down to the mucous membrane of the ethmoturbinalia, while those in the lower region of the respiratory tract were - as a rule - moving to direction opposite to the throat

. Second stage larvae were located at the ethmoturbinalia and partly in the two dorsolateral pharyngeal cavities. Third stage larvae could usually be found in the two pharyngeal cavities and scarcely in other parts of the throat, in the larynx or in the nasal canals. Infection may result in an enlargement of the pharyngeal cavities up to 5 or 6 times of the normal size. From the above observations it can be concluded that first stage larvae preferably settle on the mucous membrane of the