The effect of larval parasites of the pickleworm,Diaphania nitidalis(Stoll), and of the melonworm,Diaphania hyalinata(L.), were determined in southern and central Florida.Apantelessp.,Hypomicrogaster diaphaniae(Muesebeck),Pristomerus spinator(Fabricius),Casinaria infesta(Cresson),Temeluchasp., andChelonussp. were collected from the pickleworm and from the melon worm larvae.Gambrus ultimus(Cresson) andAgathis texana(Cresson) accounted for a small proportion of melonworm larval parasitism. Average parasitism of the pickleworm larvae was 2.28 and 4.33% in 1983 and 1984. Average parasitism of melonworm larvae was 12.14 and 13.42% in 1983 and 1984, respectively. Relationship between abundance of parasite species and cucurbit plants is discussed.