noneEnter Observation have been made on the seasonal incidence and parasitization of agromyzid leafminer, Chromatomyia horticola (Goureau) in Pea crop fields at Pantnagar, Uttarakhand (India) during cropping season of the year 2009-10, 2010-11. The peak period of parasitization in both years was during 9th standard week constituted 71.69% and 68.87% of parasitization respectively. Occurrence of 3 hymenopteran parasitoids of Agromyzid leafminers were recorded viz., two eulophids (Diglyphus horticola Khan, Diglyphus sp.) and one braconid (Opius sp.). Weekly percent parasitization non-significantly influenced by the environmental factors.