210 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



Phaenopsectra sp. 



One male in USNM, wing length 2.81 mm; leg ratio 1.21 ; antennal 

 ratio 2.06, Visalia, June 30, 1947, W. This specimen is probably a 

 color variety of dyari (Townes). Genitalia indistinguishable from 

 dyari; abdomen solid dark brown. 



Phaenopsectra flavipes (Meigen), new combination 



Chironomus flavipes Meigen, Systematische Beschreibung der Europaischen zwei- 

 fliigeligen Inschten, vol. 1, p. 50, 1818. 



Previous California records: Blue Lake, Humboldt Co., Townes, 

 1945, p. 76. 



Stenochirononius totifiiscus, new species 



Figure 1, / 



Holotype male: USNM 64713, 6 miles east of Orosi, Calif., July 8, 

 1947, W. 



Head brown except flageilum which is stramineous and mouthparts 

 which are blackish-brown. Thorax dark brown, heavily pollinose 

 especially between median and lateral lobes of the mesonotum giving 

 it a vittate appearance. Prealar bristles about 5. Dorsolateral bristles 

 in a single row anteriorly, becoming staggered posteriorly, giving the 

 appearance of a double row. Scutellum somewhat lighter brown 

 than the postnotum which is entirely dark brown. Halteres white. 

 Wing membrane and veins pale except r-m and f-Cu which are brown. 

 Fork of the Cu distinctly distal to r-m. Legs almost uniformly stra- 

 mineous except apices of femora which are faintly suffused with brown. 



Wing length 2.44 mm.; leg ratio 1.1; antennal ratio 1.56. 



Abdomen pale greenish white; segments 2 to 3 with a brown band 

 on apical 0.13; segment 4 with the brownish band on apical 0.09; seg- 

 ment 5 suffused with brown, becoming almost black posteriorly; seg- 

 ment 6 almost entirely blackish. 



Genitalia near ductus Townes. 



Paratypes: Two males, collected with type in USNM. 



Wing length 2.37, 2.32 mm. (2); leg ratio 1.16, 1.17 (2); antennal 

 ratio 1.51, 1.58 (2). 



Allotype in USNM, Visalia, Calif., July 4, 1947, W. 



As the male except that the thorax is somewhat lighter in color 

 and the abdominal segments are uniformly pigmented with each 

 segment having a slightly lighter colored apex. 



Wing length 2.85 mm.; leg ratio 1.27. 



This species is very near ductus Townes but differs in lacking a 

 central dusky wing band, in having a uniformly darkened postnotum, 

 and in having slight differences in the male genitalia. 



