PROCEEDINGS 



OF THE 



CALIFORNIA ACADEMY OF SCIENCES 



Fourth Series 



Vol. X, No. 6, pp. 47-49 August 6, 1920 



VI 



THREE NEW SPECIES OF DOLICHOPODID^ 



(DIPTERA) FROM CALIFORNIA 



AND NEVADA 



BY 



M. C. Van Duzee 



L Porphyrops montanus, new species 



A small blackish species with blackish wings and black feet. 



Male : Length. 3.3 mm. Face narrow, silvery white. Front violet with 

 two spots of white pollen which form a transverse band near its middle. 

 Antennae black; third joint of the usual acute triangular shape, not quite 

 as long as the eye height; the apical arista about two-thirds as long as 

 third joint. Lateral and inferior orbital cilia white, a few of the upper 

 cilia black. 



Thorax dark green, not very shining; pleurae dulled with whitish pollen. 

 Abdomen bronze or coppery-brown with a little blue or greenish on the 

 center of the dorsum of the first and second segments, and rather long 

 white hair on the sides of the first three segments. Hypopygium black, 

 extending about one-half its length below the abdomen, its lamellae black, 

 slender, rather wide at base but abruptly narrowing and tapering to a 

 slender point, not quite as long as the third antennal joint, fringed with 

 delicate pale hairs on both edges and with two long black hairs at tip ; 

 inner appendages small, black with a point at tip and a tuft of black hair 

 near the base. Legs and feet black; fore and middle tibiae a little yellowish 

 on upper surface of apical two-thirds; fore coxae with long white hair on 

 their anterior surface ; fore basitarsi widened a little at tip into a small 

 spur, making it a little concave below, a little shorter than the remaining 

 four joints taken together, fourth joint very short. Calypters, their cilia, 

 and the halteres yellow. 



