Studies were carried out on the egg material of Traumatocampa ispartaensis Doganlar & Avci (Lep.: Notodontidae) collected on Cedrus libani A. Rich. A total of 95 egg-batches were sampled over two annual generations of Tr. ispartaensis. The number of eggs in each egg-batch varied between 39 and 245 and the length of the batches varied between 7 and 36 mm. The mean number of eggs per batch was found to be 119 and 122 in 1999 and 2000, respectively. Based on field data the oviposition period continued from mid August to mid September. The mean hatching rate of the host was found to be 85.8% and 88.9%, whereas the impact of egg parasitoids accounted for 11.3% and 7.4%, respectively in the 2 years. Ooencyrtus pityocampae (Mercet) was observed as the most abundant egg parasitoid, followed by Ooencyrtus sp. near masii (Mercet) and Trichogramma brassicae Bezdenko. Based on the emergence dynamics of the egg parasitoids in the laboratory, it seems that O. pilyocampae emerged mainly in June whereas O. sp. near masii and T brassicae emerged mainly in May.