As a result of extensive surveys of sand flies carried out during 1987-90 in Thailand, species including a man-biter, Phlebotomus hoepplii, and cattle-biters, P. argentipes and P. major major, were discovered in Kanchanaburi Province. The human-baited catches revealed a low density of P. hoepplii and the biting occurred during 2100-2300 hours. Phlebotomus hoepplii was also found feeding on buff...

The biology and morphology of Chromadorina bioculata is presented. Tile nematode was abundant on the alga Cladophora of one lily pond, but absent from similar habitats in nearby ponds. The setae, caudal glands, high Iocomotory rates and positive photo response have been interpreted in relation to maintenance on, amongst and between algal filaments, suspended over large volumes of water.When pla...

The nesting biology and the social structure of Euglossa fimbriata were studied based on two original nests found on the campus of the University of São Paulo, Ribeirão Preto, Brazil. Nest 1 contained two inseminated females, 39 sealed cells, one cell being provisioned, and six old and empty cells. Nest 2 contained three inseminated females, 45 sealed cells, one cell being provisioned, and 27 o...

In most freshwater ecosystems, aquatic insects are dominant in terms of diversity; however, there is a disproportionately low number of records of alien species when compared to other freshwater organisms. The Chironomidae is one aquatic insect family that includes some examples of alien species around the world. During a study on aquatic insects in Amazonas state (Brazil), we collected specime...