molle var areira, produced toxicity by inhalation and only that from T. For adults, all EOs, except those from S. vulgaris EO produced the lowest CL50 values and as inferred from the low TL50 values, was highly toxic. For nymphs, all EOs produced fumigant and contact activity which increased with concentration and with exposure time T. Topical application was used for eggs and exposition to vapours and to a pretreated surface for nymphs and adults. areira (Anacardiacea) and leaves from Aloysia polystachya, Aloysia citriodora (Verbenaceae), Origanun vulgare, Thymus vulgaris (Labiatae) and Elyonurus muticus (Poaceae) were evaluated against eggs, second instar and adults of N. Insecticidal activities of essential oils (EOs) from leaves and fruits of Schinus molle var. The cohorts on diet B also had a higher reproduction rate and a shorter generation tieme than those on diet A. Diet B significantly reduced development time and increased nymphal and adult survival. vulgaris + cobs of Zea mais + seeds of Helianthus annus and Arachis hypogaea.

Diet A consisted of fruits of Phaseolus vulgaris and diet B, fruits of P. smaragdula were fed on two oligidic diets to study the effects on the duration of the biological cycle, survival and reproduction. In this region, three basic morphs were determined: the morph smaragdula was the most abundant during the five years of this study, followed by torquata and the aurantiaca type. viridula is known to be polymorphic and several genetically determined types have been described. Overwintered adults were collected from Rivera, Provincia de Buenos Aires to obtain a colony of this bug. In order to avoid these problems, two alternatives were investigated in this work: the biological control and the botanical insecticides. Currently, control of this pest is based mostly on the intensive use of chemical insecticides but this has had serious drawbacks (environmental contamination, generation of resistance, damages to human health and destruction of benefic enthomofauna), making it incompatible with integrated pest management strategies for soybean or pulse crops. In Argentina, this pentatomid causes important economic damage to soybean crops from nymph II to adult stages. Nezara viridula (L.) (Hemiptera: Pentatomidae) is a highly polyphagous pest that is widely distributed in the tropical and subtropical regions of the world. This communication offers a general view of the structural characteristics and biological activities of the secondary metabolites isolated from plants of the Schinus genus, as well as their ethnomedical uses and toxicological considerations.

Extracts, as well as isolated compounds, have shown antibacterial, antifungal, anti-inflammatory, antioxidant, anticholinesterase, insecticide, repellent, antitumor, phytotoxic, hypotensive, antidepressant, antiprotozoal, antiulcerogenic and analgesic activities. Monoterpenes, sesquiterpenes, sterols, fatty acids, triterpenoid acids, biphenyl esters and flavonoids have been identified from plants of this genus. Over the last decades an increasing number of papers have been published reporting the isolation and identification of bioactive secondary metabolites and the pharmacological activities of extracts, essential oils and isolated compounds obtained from this genus. A number of plants in this genus are used in the folk medicine for several pathologies. Some Schinus species have been introduced in other warm and tropical regions of the World and are cultivated as ornamental trees. The Schinus genus belongs to the Anacardiaceae family and comprises 29 species native from South America, distributed in Peru, Bolivia, Chile, Argentina, Uruguay, Brazil and Paraguay.

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