22 
Psyche 
[March- June 
STUDIES ON SYRPHID FLIES IN THE MUSEUM OF 
COMPARATIVE ZOOLOGY 1 
By Frank M. Hull 
University of Mississippi 
This study presents the descriptions of additional new species 
of Syrphid flies in the collections of the Museum of Comparative 
Zoology of Harvard University and represents a continuation of 
earlier studies. Again I wish to thank Professor Nathan Banks 
for facilities of study extended to me. 
Syrphus graptus n. sp. 
Male. Length 11.5 mm.; wing 10.6 mm. Head: eyes bare, 
touching for a considerable distance; the middle of the posterior 
margins are gently excavated, the vertical triangle is brownish- 
yellow pollinose, the occipital pile wholly golden yellow; the 
front, face and cheeks are pale yellow, the upper face and re- 
mainder of face except the broad round central tubercle are cov- 
ered with dense, golden pollen, more shining upon the face than 
upon the front. There is also on the front a large, circular, pol- 
ished, shining bare area; from this area there runs upward a 
vertical, slender, brownish streak, not however, reaching to the 
point of contact with the eyes. Just above each antenna is a 
conspicuous shining black spot. Antennae wholly pale orange, 
the base of the arista concolorous, its rather long, apical three- 
fifths black. Pile of front long, erect and like that of the face pale 
and confined to a pollinose area. Thorax: dark, shining golden- 
1 Published with the aid of a grant from the Museum of Comparative Zoology 
at Harvard College. Earher articles in this series, dealing with the Syrphids in 
the Museum of Comparative Zoology, are as follows: 
I. New Species of Exotic Syrphid Flies. Psyche, xliv, pp. 12-31; pi. 2 (1937). 
II. Descriptions of Some New Species of Syrphidae. Psyche, xlviii, pp. 149-164, 
plate x (1941). 
III. Some Flies of the Genus Volucella. Proc. New England Zool. Club, vol. xix, 
pp. 93-98 (1942). 
IV. Some Flies of the Genus Mesogramma. Proc. New England Zool. Club, vol. 
xx, pp. 17-24 (1942). 
V. New Species of Syrphidae from the Neotropical Region. Psyche, xlix, pp. 84- 
107 (1943). 
