FAMILY PALLOPTERID.E 297 



Palloptern Fallen has been considered the only genus and has been 

 reviewed by Malloeh.* The genus has been placed in the Lauxaniida? 

 and Lonchaeidffi. It differs from the former in lacking preapical tibial 

 bristles and from the latter in having the front transverse anteriorly, 

 the lunule being concealed. In many respects it shows a relationship 

 to the Helomyzidffi but is excluded from the group by its flattened ovi- 

 positor and is, perhaps, more closely allied to the Otitidip. The genus 

 Omomijia, placed in the Ccelopidae by Coquillett, belongs here. It 

 shows a remarkable sexual dimorphism, the males bearing long, woolly 

 pile while the females show little trace of it. 



KEY TO GENERA 



1. Facial carina strong, the antenna! grooves deep; males densely pilose 



(2, 3) Omomyia Coquillett 



Facial carina quite weak; antennal grooves shallow; never densely 

 pilose (1, 4) Palloptera Fallen 



1924. Proc. U. S. N. M., Ixv, Article 12. pp. 6-7. 



