ABSTRACT. This paper presents a five years survey of endoparasitoids obtained from the larvae of frugivorous Tephritidae and Lonchaeidae flies. The insects were reared from cultivated and wild fruits collected in areas of the cerrado in the State of Mato Grosso do Sul, Brazil. The flies obtained from 14 host fruit species were eight Anastrepha species, Ceratitis capitata (Wiedemann, 1824) (Tephritidae); Dasiops sp. and Neosilba spp. (Lonchaeidae). Eleven parasitoid species were collected: Braconidae -Asobara anastrephae (Muesebek, 1958), Doryctobracon areolatus (Szépligeti,

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This study aimed to know the patterns of spatial distribution of Anastrepha spp. and establish a criterion for determining the appropriate time for pest control. For this, 90 McPhail traps were used as Sampling Units (SU) divided into three commercial orchards of Novo Milênio guava with a total area of 14 ha. Traps were interspersed between the rows of plants, systematically in the orchards, hung and baited with 5% hydrolyzed corn protein with weekly collections. We caught 8,170 Anastrepha spp. in 840 SU. The mean infestation index was compared to the three types of distribution: random, uniform, aggregate, and fit by the theoretical frequency distributions of Poisson, negative binomial and positive binomial. The populations of Anastrepha presented aggregate distribution according to the mean variance method (I), tested by distance from randomness. The economic damage risk potential of Anastrepha spp. was associated with the aggregate distribution behavior. The most appropriate moment for the use of control techniques is when reaching 20 flies by the negative binomial. On the other hand, number of fruit fly adults per trap per day (FTD), underestimates population index, which will allow population growth, leading to risk of crop production loss.

The objective of this work was to determine the fecundity of the predator

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PALAVRAS-CHAVE: Mosca-das-frutas, armadilha McPhail, Anastrepha, Ceratitis capitata, NeosilbaABSTRACT -This paper evaluated the capture of frugivorous flies (Tephritidae and Lonchaeidae) with plastic McPhail traps, in two commercial citrus groves, located in the municipalities of Anastácio and Terenos, in the state of Mato Grosso do Sul, Brazil. The aim of this work was to determine the populational fluctuation of adult frugivorous flies, and to study its relationship with the damaged fruits in the groves. The traps were placed about 30 m apart over the entire area in both groves, hung up approximately 1.70 m high from soil, in the canopy of the citrus plants. Eight traps were installed (two traps/ha) at Anastácio and 21 traps in Terenos (one trap/ha). The traps were baited with the hydrolyzed corn protein (5%) Tephritid TM (food bait). Evaluations were carried out from March 22, 1994 to March 23, 1996. Ceratitis capitata (Wiedemann) and 25 species of Anastrepha were caught during several months in both orange groves, but no fruit fly species were found infesting oranges. Neosilba sp. was caught from the traps during all the experiment and was also reared from the damaged oranges, thus suggesting that that fly can be a pest. The predominant species of frugivorous flies caught in the traps were: Neosilba sp., C. capitata, Anastrepha punctata Hendel and A. sororcula Zucchi. There was no correlation between adult frugivorous flies caught in the traps and the number of larvae and adult flies reared from the infested oranges collected in the groves.

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