130 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



Thecophora atra (Fabricius) 



Myopa atra Fabricius, Species insectorum . . ., vol. 2, p. 469, 1781. 



Each of the specimens examined differ from each other and from 

 the typical European form. However additional material would be 

 necessary to decide if any of these should be named. 



The specimen from Siberia has more yellow on the anterior femora 

 than the typical form, but this condition is matched by one or two 

 specimens of a series from Cyprus in my collection. 



The specimen from Yangchow has the pollen yellowish gray and 

 the femora mainly yellowish and thus approaches T. sauteri of Formosa. 

 However, it is paler than sauteri having the antennae and front mainly 

 yellowish, and the wings are also yellowish. One of the two cotype 

 males of sauteri sent by USNM for comparison has the abdominal 

 pollen more grayish than yellowish. 



The specimen from Szechwan has all of the femora almost entirely 

 yellow, and the antennae are mainly yellowish. 



This species has not been previously recorded from Siberia. 



Material examined : Siberia : Ust Balei, July 1927, Cockerell, 1 male, 

 USNM. Kiangsu: Yangchow, Aug. 18, 1924, C. Y. Wong, 1 male, 

 USNM. Szechwan: Behluhdin, 6,000 ft., July 25-Sept. 1, 1936, 

 D. C. Graham, 1 male, USNM. 



Thecophora philippinensis, new species 



Male: Length 4 mm. Vertex and front black. Narrow margin 

 above base of antennae dark reddish. Face and facial grooves 

 reddish-yellow. Posterior half of cheeks blackish. Occiput black. 

 Antennae reddish-yellow, black on lateral surface and distal half of 

 medial surface of third segment. Arista black. First segment as 

 long as wide. Second segment four times length of first. Third 

 segment 2% times length of first. Proboscis missing beyond palpi. 



Thorax black, with faint white pollinose areas leaving three indis- 

 tinct black lines on dorsum. Legs black, basal two-fifths of posterior 

 femur yellow. Base of tibiae, basal tarsi, pulvilli, and claws except 

 black tips yellow. Wings hyaline. Calypters brownish. Halteres 

 bright yellow, blackish at base. 



Abdomen black, relatively distinct grayish yellow pollinose distal 

 band on second, third, fourth, and fifth segments. Sixth segment 

 indistinctly grayish yellow pollinose. Fifth sternite very prominent, 

 resembling a theca. 



Variation (in paratype): Length 4% mm. No black on cheeks. 

 Antennal proportions 1:3:2. Each of distal segments of proboscis 

 about equal to length of head. Theca less prominent (abdomen 

 flexed). 



