Rio Grande do Sul State is one of the greatest maize producers of the country, however, little is known in terms of the main natural enemies associated to insect pests in this crop. The objective of this work was to survey parasitoids of fall-armyworm Spodoptera frugiperda. Samplings in maize areas of the Instituto Riograndennse do Arroz (IRGA) were conducted in Cachoeirinha RS, during the growth seasons of 1999/2000 and 2000/2001. Insect larvae were collected weekly, during the crop cycle. Larvae were collected weekly, during the crop cycle. Larvae were individualized and kept in laboratory until emergence of adults or parasitoids. In the first and second crop seasons, 1425 and 518 larvae were collected, respectively. Out of these, 18.11% and 22.01% were parasitized, with the following parasitoids being observed: Chelonus sp., Cotesia sp. and Exaticolus sp. (Hym., Braconidae), Campoletis flavicincta and Ophion sp. (Hym., Ichneumonidae), and Archytas incertus and Lespesia archippivora (Dip., Tachinidae). There was predominance of C. flavicincta, corresponding to 63.57% and 76.32% of the parasitoids, respectively, for the first and second seasons. In C. flavicincta hiperparasitism occurred by Conura sp. (Chalcididae) and Aphanogmus sp. (Ceraphronidae). Nutrition; Diet; Parasites diseases and disorders; Parasites; Insect parasites; Hosts; Insect hosts; Habitat; Man made habitat; Land zones; Neotropical region; South America Archytas incertus; Lespesia archippivora (Tachinidae ); Lepidopteran hosts; Spodoptera frugiperda; Parasitoids recorded in survey; Cultivated land habitat; Maize crops; Brazil; Rio Grande do Sul; Cachoeirinha; Parasitoids recorded from lepidopteran pest of maize crops Spodoptera frugiperda (Noctuidae); Food plants; Zea mays; Dipteran parasites; Parasitoid survey; Hymenopteran parasites; Cultivated land habitat; Brazil; Rio Grande do Sul; Cachoeirinha; Parasitoid & hyperparasite survey, maize crops Terebrantia; Lepidopteran hosts; Spodoptera frugiperda; Survey of parasitoids & hyperparasites of maize crop pest; Hyperparasitism; Cultivated land habitat; Maize crops; Brazil; Rio Grande do Sul; Cachoeirinha; Survey of parasitoids & hyperparasites of lepidopteran pest of maize crop Campoletis flavicincta (Ichneumonidae); Hyperparasitism; By Aphanogmus & Conura (Hymenoptera) in lepidopteran pest of maize; Brazil Conura (Chalcididae ); Aphanogmus (Ceraphronidae ); Hymenopteran hosts; Campoletis flavicincta; Hyperparasitism in lepidopteran pest of maize crops; Brazil; Rio Grande do Sul; Cachoeirinha; Hyperparasitism of hymenopteran hosts in lepidopteran pest of maize crops none