Common vampire bats (Desmodus rotundus) occur throughout much of South America to northern México. Vampire bats have not been documented in recent history in the United States, but have been documented within about 50 km of the U.S. state of Texas. Vampire bats feed regularly on the blood of...

Collections of Amblyomma auricularium and A. pseudoconcolor Aragão, 1908 are discussed in relation to distribution and hosts. Three tick collections (two from Argentina and a third from the USA) house a total of 574 A. auricularium (307 males, 162 females, 73 nymphs and 32 larvae) and 179 A....

The guttatus group of the genus Culicoides, subgenus Hoffmania, is comprised in the Neotropical Region of 30 species, of which the following 7 species are described as new (by Spinelli): C. brownei sp. nov. from Colombia; C. davidi sp. nov. from Colombia and Trinidad; C. diffusus sp. nov. from...

A study of bovine parasitic gastro-enteritis (PGE) under extensive grazing conditions was carried out in Paraguay through a 2-year period. The investigation was divided into 2 sections: (i) a sequential field investigation of PGE in 2 beef herds; (ii) ecological observations on the free-living...

Knowledge on the ticks of economic importance in Latin America is briefly reviewed, notes being given on the external morphology and world distribution of each. The species listed are Boophilus microplus (Can.), which is the species of greatest economic importance in Latin America where it is...