Spalangia leiopleura Gibson, 2009 (Hymenoptera: Pteromalidae) is reported for the first time from Brazil. One female was collected using a Möricke trap at the Reserva Biológica do Jaíba, municipality of Matias Cardoso, state of Minas Gerais, Brazil, on 19-22 May 2015. This species was previously known only from North America, between about 40° N in USA to Tamaulipas state in northern Mexico. Thus, our new record extends the known distribution of S. leiopleura southward about 7,300 km, and represents a new national record for Brazil and a new record for South America and the Neotropical Region.

Charybdis hellerii is an invasive swimming crab widely disseminated in the western Atlantic. This species became a threat to colonized ecosystems, competing with local species for resources. The extension of distribution and increasing population size of C. hellerii has been associated with the scarcity of indigenous predators and cases of predation report octopuses as the main native predators. In this study, we present the first evidence that native fish can consume C. hellerii. 53 individuals of the goldspotted snake eel, Myrichthys ocellatus, were collected at seagrass and macroalgal beds in Pernambuco State, Brazil, and had their stomach contents analyzed. Three juvenile C. hellerii were found along with native prey. Myrichthys ocellatus feeds mainly on small crabs, thus C. hellerii individuals were consumed before reaching sexual maturity. Oppositely to octopuses and other crab predators, M. ocellatus is of little fishing interest and is commonly found in macroalgae beds, seagrass meadows and sandy areas near reefs. Our results suggest that a higher number of carcinophagous taxa may prey on this invasive crab and we emphasize that the conservation of these species is paramount for controlling C. hellerii populations in invaded areas.