PROG. ENT. SOC. WASH., VOL. 20, NO. i, APR., 1918 (>!> 



THREE NEW SPECIES OF DIPTERA. 



BY CHARLES T. GREENE, 

 Specialist on Forest Diptera, Bureau of Entomology, Washington, D. C. 



While making a study of some miscellaneous Diptera in the 

 collection of the Branch of Forest Insects, the following species, 

 which appear to be new, were found. 



CHLOROPIDAE. 

 Madiza conicola, new species. 



Male and female. Glossy black. Antennae brownish black on outer 

 surface, inner surface of second joint entirely and third joint mostly dark 

 red, upper and apical edge blackish; third joint rounded. Arista brownish 

 black, short pubescent. Arista as long, in the male, and nearly as long in 

 the female, as width of frons at base of antennae. Palpi black. Cheek about 

 half as high as width of third antennal joint, anterior angle produced slight- 

 ly, lower half of cheek finely bristled, along upper edge of these fine 

 bristles are several much longer bristles; vibrissae present. Frons shiny 

 black. Female, frons at vertex slightly wider than width of eye, and at 

 base of antennae, width equal to that of eye. A narrow area above base 

 of antennae, reaching half way along the frons, opaque blackish. Opaque 

 area much wider in the male and frons narrower. Ocellar triangle, in 

 both sexes, fairly well defined, finely rugose, bare, and with a single bristle 

 on each side. Mesonotum thickly covered with short, blackish hairs; 

 humeral and post alar callosity each have a strong bristle. Two bristles, 

 one stronger than the other, on the mesonotum, near each corner of the 

 scutellum. Scutellum rounded, disk covered like mesonotum. A pair of 

 bristles at apex and a single bristle on each side along the margin. Ab- 

 domen shiny black with a small lighter area near the base. Legs brown- 

 black; tip of femur, base and tip of tibiae and all tarsal joints yellow; the 

 infuscation on the middle of the front tibia is variable from a pale grayish 

 to a brown. Wings hyaline, veins yellow; third costal section nearly or 

 about half the length of the second; third and fourth veins parallel. Hal- 

 teres whitish. Length 1.25 to 1.5 mm. 



Tiii'-lnculi,tii. Long's Ranch, Oregon, September 3, 1916. 

 Reared November 20, 1910. Other localities are Ashland, 

 Oregon, September 2, 1916; Quincy, California, Sept. 20, 1916. 

 Mr. F. P. Keen, collector. 



Larva of tin's species feed within the cones of Abies concol<>-. 



T///><>. Female, Allotype male, Cat No. 21709, U. S. 

 Mils. 



