AGROMYZID LEAF MINERS — FRICK 357 



A. parvicornis has the mesonotum shining black and bearing two 

 developed dorsocentrals. The costa reaches to the end of vein 

 M14.2 and the calypteral fringe is brown. The larvae mine the leaves 

 of Zea mays L. It is a widespread and well known species and I have 

 seen specimens from most of the States in the United States and from 

 Ontario. 



Agromyza rep tans Fallen 



Agromyza reptans Fallen, Diptera sueciae, vol. 2, No. 37 (Agromyzides), p. 3, 

 1823.— Melander (part), Journ. New York Ent. Soc, vol. 21, p. 253, 1913 

 (1 cf, Seattle, Wash.). — Handel, in Lindner, Die Fleigen der palaearktischen 

 Region, fam. 59, p. 144, 1931 (figures of head and wing). 



This is a large species (3 to 4 ram. in wing length) that has the meso- 

 notmn subshining black and bearing four postsutural dorsocentrals. 

 The tibiae and tarsi are yellowish. A. reptans is a common species in 

 Europe, but I have seen no other North American specimens than 

 Melander's and a long series that I reared from blotch mines in the 

 leaves of Urtica californica Greene in California. 



Agromyza riibi Brischke 



Agromyza rubi Brischke, Schrift. Naturf. Ges. Danzig, vol. 5, p. 250, 1881. — • 

 Hering, Tijdschr. Ent., vol. 97, p. 118, 1954 (figures of larval characters). 



Agromyza sulfuriceps Strobl, Mitt. Naturw. Ver. Steierinark, vol. 34, p. 270, 

 1898.— Melander, Journ. New York Ent. Soc, vol. 21, p. 225, 1913,— 

 Hendel, in Lindner, Die Fliegen der palaearktischen Region, fam. 69, p. 

 152, 1931 (figures of head and wing). 



This rather distinctive Holarctic species belongs to the group with 

 vein Mi+2 at or nearest the wing tip and with no medial midtibial setae. 

 If differs from A. varifrons in having the mesonotum dull gray pollinose 

 and from A. pallidiseta and A. aristata in having the femora, tibiae, 

 and tarsi dark and vein M1+2 ending at the wing tip. The larvae 

 mine the leaves of species of Ruhus, Potentilla, and Sanguisorba in 

 Europe. I have seen swept specimens from Washington, Idaho, and 

 California. 



Agromyza rutiliceps Melander 



Agromyza rutiliceps Melander, Journ. New York Ent. Soc, vol. 21, p. 261, 1913. 



The holotype male is in the collection of A. L. Melander. Its con- 

 dition is poor so no illustrations were prepared from it. A. rutiliceps 

 belongs with those species having four developed dorsocentrals, one 

 being presutural. The calypteral margin and fringe are yellow and 

 the tibiae and tarsi are dark. The type from Montana is the only 

 specimen of this species that I have seen. 



