AGROMYZID LEAF MINERS — FRICK 413 



2. Third antennal segment yellow; scutellum about one-half yellow, distal scutellar 



seta arising from yellow togata 



Third antennal segment brownish on distal one-third; scutellum about one- 

 third yellow, distal scutellar arising from black minuta 



Haplomyza minuta (Frost) 



Phytomyza minuta Frost (part), Mem. Cornell Univ. Agri. Exp. Sta., vol. 78, 



p. 86, 1924 (1 9 , Fargo, N. Dak.). 

 Haplomyza minuta (Frost), Frick, Canadian Ent., vol. 85, p. 73, 1953. 



This is the darkest of the three species. The third antennal seg- 

 ment is dis tally brownish and the scutellum is not more than one- 

 third yellow. The larvae make serpentine-blotch mines in the leaves 

 of Chenopodium album L. in Washington. The lectotype female is 

 from Fargo, N. Dak. 



Haplomyza palUata (Coquillett) 



Phytomyza ■palliata Coquillett, Journ. New York Ent. Soc, vol. 10, p. 191, 1902. 



The yellowest of the three species, Haplomyza palliata has the black 

 of the occiput not reaching the eye margin, the inner postalar seta on 

 yellow, and the basal scutellar seta on yellow. The larvae mine in 

 Portvlaca sp. in New Mexico. 



Haplomyza togata (Melander) 



Anlineura togata Melander, Journ. New York Ent. Soc, vol. 21, p. 250, 1913. 

 Phytomyza minuta Frost (part), Mem. Cornell Univ. Agri. Exp. Sta., vol. 78, 



p. 86, 1924 (3, New Mexico, Texas, and Bismarck, N. Dak.). — Frick, 



Canadian Ent., vol. 85, p. 73, 1953. 



Haplomyza togata is intermediate between the more yellow H. 

 palliata and the darker H. minuta. The third antennal segment is 

 yellow, the inner postalar is on black, and the scutellum has the 

 basal seta arising from black and the distal from yellow. The head 

 is illustrated to show the single reclinate upper-orbital (fig. 129). 

 The larvae form serpentine-blotch mines in the leaves of Amxiranthus 

 hybridus L. and A. retrqflexus L. The species is apparently wide- 

 spread, with identified specimens from Washington, California, New 

 Mexico, Texas, Kansas, and North Dakota. 



10. Genus Phytoliriomyza Hendel 



Phyfoliriomyza Hendel, in Lindner, Die Fliegen der palaearktischen Region, 

 faro. 59, p. 203, 1931 (as subgenus). 



This genus is characterized by having the orbital setulae proclinate 

 and the costa ending at vein M1+2. Phytoliriomyza, as its name sug- 

 gests, together with the closely related Xyraeomyia form a connecting 

 link between the more generalized genera and the more specialized 

 genera related to Phytomyza (Frick, 1952). The head shape is very 



