THE NIMBLE FLIES 



(Family DexiidcB.) 



The flies of this group, of which we have nearly fifty species 

 in this country, most of them belonging to the typical genus 

 Dexia, resemble the Tachina flies for the most part, although 

 some are quite handsome, as, for example, Euantha liturata, 

 which has banded wings and a striped thorax. The legs of these 

 flies are usually long and in their early stages they are parasitic in 

 various insects, especially in beetles and also in snails. Some of 

 the exotic species are very handsome, as those of the genus 

 Rutilia. 



