Este trabalho teve como objetivo verificar a capacidade reprodutiva do parasitóide Trichospilus diatraeae Cherian & Margabandhu, 1942 (Hym.: Eulophidae) em pupas de quatro hospedeiros lepidópteros: Diatraea saccharalis F. (Pyralidae), Anticarsia gemmatalis Hübner, Spodoptera frugiperda J.E. Smith e Heliothis virescens F. (Noctuidae). Os experimentos foram realizados em câmara climatizada do tipo B.O.D. a 25 ± 1°C, com 70 ± 10% de Umidade Relativa e Fotofase de 14h. Não foi observada diferença na porcentagem de parasitismo entre as espécies, mas houve diferença no número de parasitóides emergidos, sendo menor em H. virescens (105,3 ± 2,9 parasitóides/pupa) e maior em S. frugiperda (130,6 ± 5,8 parasitóides/pupa). Todavia não houve diferença entre D. saccharalis (122,9 ± 5,5 parasitóides/pupa) e A. gemmatalis (118,3 ± 6,5 parasitóides /pupa).

Laboratory studies at 25.5 degrees C and 70-75% r.h. demonstrated that the average daily survival rate for females of the parasitoid Spalangia gemina Boucek (Hymenoptera: Pteromalidae) was 0.907 over a 20-day period, with 50% mortality in 17.3 days. Mean immature developmental time of S.gemina was 22 days and the population growth rate was c. 40-fold per generation. The females successfully parasitized 1-, 2- and 3-day-old pupae of Musca domestica L. and parasitism of 98-100% was obtained at parasitoid to host ratios of 1:0.5-2.5. Parasitism of 81-87% was obtained at parasitoid to host ratios of 1:10. The male to female sex ratio was 1:1.59. S.gemina appears to have advantages over other Spalangia spp., which have immature development times of 28-32 days under comparable conditions, for the biological control of Muscidae.

This paper reports on ant and termite species inhabiting the mounds (murundus) found in three wetland sites in Santo Antonio da Patrulha. Ants and termites were found in 100% of the mounds of two sites and in 20% of those in the third site. Colonies of Camponotus fastigatus were found inhabiting all the mounds, while colonies of Brachymyrmex sp., Linepithema sp., Pheidole sp., and/or Solenopsis sp. were collected in less than 30% of the mounds. In the mounds of the three sites, colonies of Anoplotermes sp. and/or Aparatermes sp. termites were found together with the ant colonies. Another cohabiting termite species, Cortaritermes sp., was found only in the mounds of one site. The results suggest that C. fastigatus is the species building the mounds, with the other species, whether ants or termites, being the inquilines.

Abundance and phenology of Pseudoscorpiones (Arachnida) from a mixedwater inundation forest in Central Amazonia, Brazil. -A total of 675 Pseudoscorpiones, representing nine species, were captured during 12 Morais, José Wellington de et al. 1997. "Abundance and phenology of Pseudoscorpiones (Arachnida) from a mixedwater inundation forest in Central Amazonia, Brazil." Revue suisse de zoologie 104, 475-483.