270 



CALIFORNIA ACADEMY OF SCIENCES [Psoc. 4th Ser. 



420. Lonchoptera lutea Panz. 



Common everywhere. Hood River, VI- 19 to X-26 

 (Cole). Lundbeck in "Diptera Danica" said that only six 

 males of furcata Fallen were known and in this species the 

 males are about as rare. The females undoubtedly reproduce 

 parthenogenetically. 



Family PHORID.E 



Fig. 27. Chatoneurophora variabilis Brues. 



Small, usually dark colored, flies with large, broad wings 

 and a peculiar venation. The thorax is large and the head 

 small. They are commonly seen running about on leaves 

 and on windows in houses; occasionally they swarm in the 

 air. The larval habits are remarkably varied; some live 

 in decaying animal and vegetable matter and others are true 

 entoparasites. 



