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Family Tanypezidae 



Tanypeza, head and wing. 



Medium sized flies, with rather long, slender legs. 



Head higher than long; face retreating below; two pairs of f rentals: 

 ooellars proclinate; antenna pendulous, the third segment oval, moder- 

 ately large; oral vibrissa absent; palpi broadened. Thorax with only 

 one pair of dorsocentrals; one humeral; no sternopleurals, one or two 

 bristles on the mesopleura above, the mesopleura and pteropleura haired. 

 Legs long, slender, without bristles. Wings with the apical cell nar- 

 rowed; anal cell rounded apically, about as long as the second basal; 

 first vein setulose above; auxiliary vein entire, touching the first vein 

 before its end. 



The adults occur in moist woods and are by no means numerous 

 in collections. The immature stages are unknown. 



Tanypeza Fallen is the only known genus unless Tetradiscus Bigot 

 is distinct. However, Tetraducus may not belong to this family and is 

 too poorly described to ])e recognizable. There are fewer than a dozen 

 known species belonging to the family, most of them occurriiig in the 

 Neotropical region while one is known from Europe. 



