354 PROCEEDINGS OF THE NATIONAL MUSEUM vol. io8 



Agromyza aristata Malloch 



Agromyza aristata Malloch, Canadian Ent., vol. 47, p. 13, 1915. 



Agromyza ulmi Frost, Mem. Cornell Univ. Agr. Exp. Sta., vol. 78, p. 54, 1924. — 



Needham, Frost, and Tothill, Leaf-mining insects, p. 252, 1928 (figure 



of leaf mine). 



A. aristata belongs to the species group in which there are no medial 

 setae on the midtibia and vein M1+2 is at or nearest the wing tip (fig. 

 4). The head (fig. 5) has the arista and the setae somewhat shortened. 

 The larvae mine in the leaves of Ulmus americana L. and probably 

 Celtis occidentalis Mic. because I have seen a leaf with a mine very- 

 similar to that found on elm. Known from Iowa, Illinois, Indiana, 

 Ohio, Pennsylvania, New York, and Virginia. 



Agromyza harberi Frick 



Agromyza abbreviata Malloch (not Fallen, 1823), Ann. Ent. Soc. Amer., vol. 6, 



p. 285, 1913 (fig. of wing). 

 Agromyza barberi Frick, Univ. California Publ. Ent., vol. 8, p. 372, 1952. 



This is a shining species with thi-ee developed dorsocentrals, the 

 costa ending at vein R4+5, and a very narrow gena (fig. 6). The larvae 

 probably mine the leaves of grasses. Known only from the holotype 

 from New Mexico. 



Agromyza canadensis Malloch 



Agromyza canadensis Malloch, Ann. Ent. Soc. Amer., vol. 6, p. 299, 1913 (figure 

 of head)— Shewell, Canadian Ent., vol. 85, p. 462, 1953. 



This large species (3 mm. in wing length) has the mesonotum dull 

 and bearing about five developed dorsocentrals. It is rather similar 

 to A. diversa in that the mesonotum is light brown. However, this 

 species has the third antennal segment and maxillary palpus brown. 

 The head has a very narrow gena (fig. 7). There are only three 

 specimens known, all from Ontario, Canada. 



Agromyza centrosemae Frost 



Agromyza centrosemae Frost, Ann. Ent. Soc. Amer., vol. 29, p. 301, 1936. 



The holotype male is in the U. S. National Museum (No. 62972). 

 It is extremely teneral but the mesonotum lacks a metallic sheen and 

 the calypteral fringe is yellowish. These characteristics separate this 

 species from A. frosti and A. currant. Known only from the holotype 

 which was reared from Centrosema pubescens Benth. in the Panama 

 Canal Zone. 



Agromyza currant Frost 



Agromyza currani Frost, Ann. Ent. Soc. Amer., vol. 29, p. 305, 1936. 



The female holotype is m the American Museum of Natm-al History 

 and there is a male paratype in the S. W. Frost collection. The head 



