AGROMYZID LEAF MINERS — FRICK 375 



4. Vein M3+4 with the ultimate section about 1.5 times as long as the penulti- 



mate pruni 



Vein M3+4 with the ultimate section from 2 to 2.5 times as long as the penulti- 

 mate indecora 



5. Maxillary palpus black or brown 6 



Maxillary palpus yellow pruinosa 



6. Third antennal segment reddish; crossvein m-m about its own length from 



r-m 7 



Third antennal segment brown; m-m not more than six-tenths of its length 

 from r-m waltoni 



7. Head with only one upper-orbital reclinate (fig. 57) ; dorsal margin of lunule 



semicircular, smoothly curving (fig. 58) ; midtibia medially with three postero- 

 lateral setae amelancLiieris 



Head with both upper-orbitals reclinate (fig. 64) ; dorsal margin of lunule flat- 

 tened, outwardly angulate (fig. 65) ; midtibia medially with one or two 

 posterolateral setae setosa 



Phytobia (Phytobia) antelanchieris (Greene) 



Agromyza setosa (Loew), Melander, Journ. New York Ent. Soc, vol. 21, p. 253, 



1913. 

 Agromyza amelanchieris Greene, Journ. Agr. Res., volume 10, p. 314, 1917 (figures 



of larva and puparium). 



P. amelanchieris is most closely related to P. setosa but has the eye 

 about as long as high (fig. 57) and the lunule smoothly rounded above 

 (fig. 58). Also there are at least three lower-orbitals and all of the 

 femora are distally reddish. The larvae mine the cambium of Amelan- 

 chier canadensis (L.). Melander has a specimen of this species in his 

 collection from Oroville, Wash., labeled as Agromyza pruinosa, 

 thereby extending the distribution to the far west. The species is now 

 known from Washington, Michigan, Tennessee, North Carolina, West 

 Virginia, and Massachusetts. 



Phytobia {Phytobia) indecora (Malloch) 



Agromyza indecora Malloch, Canadian Ent., vol. 50, p. 132, 1918. 



The head of the type male is illustrated to show the three lower- 

 orbitals (fig. 59). There are frequently as many as four or five. This 

 species is similar to P. pruni in having the costa ending at vein R4+5. 

 P. indecora may be separated by the long ultimate section of M3+4 

 (2 to 2.5 times as long as the penultimate). No larval host plants are 

 known. I have seen about 44 specimens, all from Illinois. 



Phytobia {Phytobia) kallima (Frost) 



Agromyza kallima Frost, Ann. Ent. Soc. Amer., vol. 29, p. 299, 1936. 



This species is unique in having brown markings on the wing (fig. 60). 

 P. kallima is known only from the holotype male from Barro Colorado 

 Island, Panama Canal Zone. 



