ABSTRACT
The aim of this study was to evaluate the minimum number of Möricke traps needed to sample the diversity of Hymenoptera parasitoids in Glycine max (L.) Merrill soybeans. The experiment was conducted in a soybean crop of the variety IAC 82, in Ribeirao Preto (21°12’17.8" S / 47°52’34.8" W), SP, Brazil. In the period from February 24 to April 11, 2003, seven collections of Hymenoptera parasitoids were made with the use of Möricke traps. The statistical design consisted of randomized blocks, with five treatments (one to five traps) and four repetitions. In terms of the total number of families caught, the highest averages were obtained with the use of two to five Möricke traps, these averages differing significantly from the average obtained with one trap. These results suggest that for parcels of 12 x 18 m, two Möricke traps are sufficient to sample the diversity of parasitoids Hymenoptera in soybean crop. The Shannon-Wiener diversity index ranged from 0.23 to 0.48, and the evenness ranged from 0.17 to 0.36.
KEY WORDS
Diversity; Hymenoptera; parasitoids; sample; soybean