424 PROCEEDINGS OF THE NATIONAL MUSEUM vol. los 



Phytomyza agromyzina Meigen 



Phytomyza agromyzina Meigen, Systematische Beschreibung der bekannten 

 europaischen zweiflugeligen Insekten, vol. 6, p. 191, 1830. — Hendel, in 

 Lindner, Die Fliegen der palaearktischen Region, fam. 59, p. 336, 1934 

 (figures of head and \\ing). 



This is a rather distinctive Holarctic species that has the frons dark 

 and both upper-orbitals of equal length, the antenna mostly reddish 

 yellow, and the tarsi and tibiae yellow. The larvae make serpentine 

 mines in the leaves of Cornus spp. Thus far known in North America 

 only from California and Washington. 



Phytomyza albiceps Meigen 



Phytomyza albiceps Meigen, Systematische Beschreibung der bekannten europai- 

 schen zweifliigeligen Insekten, vol. 6, p. 194, 1830. — Hendel, in Lindner, 

 Die Fliegen der palaearktischen Region, fam. 59, p. 337, 1934 (figures of 

 head and wing). 



Phytomyza albiceps sens. str. is not well known in North America. It 

 belongs to those species having a yellow frons, dark third antennal 

 segment, scutellum, and femora, and the mesonotum bordered with 

 yellow. The dorsal upper-orbital is absent, or, if present, not de- 

 veloped and about the size of an orbital setula. The minute or 

 absent dorsalmost orbital and the one-third to one-half yellow ane- 

 pisternum separate this species from P. sphondylii. The larvae make 

 serpentine mines in the leaves of Artemisia spp. that are rather dis- 

 tinctive. Most mines are partially along the midrib and have the 

 frass in two alternating lines of pellets. I have reared this Holarctic 

 species from Artemisia vulgaris L. in California. 



Phytomyza angelicella Frost 



Phytomyza angelicella Frost, Ann. Ent. Soc. Amer., vol. 20, p. 218, 1927. 



This species and Phytomyza aquilegiana belong to the assemblage of 

 species having a yellow frons, dark third antennal segment, mesonotal 

 margins, scutellum, and femora, and the dorsal upper-orbital shorter 

 than the ventral. This species is distinguished from P. aquilegiana 

 by having the genovertical plates dark (fig. 140) and relatively few 

 setulae in the intraalar row (six to nine anterior to the suture and 

 about five posterior). The larvae form linear mines in the leaves of 

 Angelica atropurpurea in New York. 



Phytomyza aquilegiana Frost 



Phytomyza aquilegiae (Hardy), Melander (part), Journ. New York Ent. Soc, 



vol. 21, p. 271, 1913 (1 9 , Moscow Mountain, Idaho). 

 Phytomyza bipunctata (Loew) Melander (part), Journ. New York Ent. Soc, vol. 



21, p. 271, 1913 (1 9 , Avon, Idaho). 



