Neodexiopsis Malloch (Diptera, Muscidae) is a member of the subfamily Coenosiinae, with more than hundred species recorded in Neotropical region. In Ecuador, it known by four species, which may be an underestimated number. We describe five new based on recently collected material: bicoloratta N. longialata nigrocalyptrata plana and secunda species. A key to segregating all from Ecuador presente...

We describe a gland in the arthrodial membrane of coxa-trochanter articulation fourth pair legs Neotropical harvester Mischonyx squalidus Bertkau, 1880. Externally glandular area has rough appearance with pores on its surface, folds membrane. Internally, secretory cells have spherical vesicles, smooth endoplasmic reticulum, mitochondria and ducts that exit from cross Histochemical tests indicat...

Using data from the North American Breeding Bird Survey, we determined that most neotropical migrant bird species that breed in forests of the eastern United States and Canada have recently (1978-1987) declined in abundance after a period of stable or increasing populations. Most permanent residents and temperate-zone migrants did not show a general pattern of decrease during this period. Field...