NO. 2344. SDPERFAMILY TIPULOIDEA— ALEXANDER AND McATEE. 42$ 

 ORMOSIA MEIGENII Osten Sacken. 



Great Falls, Virginia, April 20, 1916, common, McAtee. 



• ORMOSIA NIGRIPILA Osten Sacken. 



Described from specimens collected at Washington, District of 

 Columbia. 



• ORMOSIA NUBILA Osten Sacken. 



Common; extreme dates of capture, April 4 and October 18; is 

 attracted to sap and to light. V. P. I. 



ORMOSIA RUBELLA Osten Sacken. 



Beltsville, Maryland, September 28, 1919, McAtee. 



• ORMOSIA SERRIDENS Alexander. 



Great Falls, Virginia, April 20, 1916 ; Cabin John Bridge, Mary- 

 land, April 13, 1916, McAtee; April 11, 1915, K. C. Shannon. 



Tribe LIMNOPHILINI. 



KEY TO GENERA. 



1. Sc2 before the origin of the sector; antennae with 17 segments; wings 



pubescent Via (p. 423). 



SC2 beyond the origin of the sector ; antennae with not more than 16 segments ; 

 wings rarely pubescent . 2. 



2. Wings pubescent, at least apically 3. 



Wings with microscopic pubescence only _ 5. 



3. Pubescence including the entire wing; cell Mi absent Ulomorpha (p. 424). 



Pubescence only on the apical cells of the wing ; cell Mi present or lacking__4. 



4. Small species, wing less than 5.5 mm. ; antennae of both sexes short 



Adelphomyia (p. 424). 



Larger species, wing over 6 mm. ; antennae of the male elongated 



Limnophila (subgenus Lasiomastix Osten Sacken). 



5. A supernumerary cross vein in cell C Epiphragma (p. 424). 



No supernumerary cross vein in cell C Limnophila (p. 424). 



Genus ULA Haliday. 



KEY TO SPECIES. 



Antennae of the male elongate; wings dusky but without a distinct heavy 

 brown pattern V- paupera (p. 423). 



Antennae short in both sexes ; wings with the cord and outer end of cell first Mt 

 seamed with brown U. elegans (p. 423). 



The larvae are fungicolous, going into the earth to pupate. 



ULA ELEGANS Osten Sacken. 



Maywood, Virginia, October 15, 1915, at light, McAtee. 



• ULA PAUPERA Osten Sacken. 



Kosslyn, Virginia, August 25, 1912, F. Knab and J. E. Malloch. 



