358 PROCEEDINGS OF THE NATIONAL MUSEUM vol. io8 



Agromyza spiraeae Kaltenbach 



Agromyza spiraeae Kaltenbach, Verb. Naturb. Ver. Preuss. Rheinlande West- 

 falens, vol. 24, p. 104, 1867. — Mallocb, Diptera of Patagonia and Soutb Chile, 

 pt. 6, fasc. 5, p. 477, 1934.— Hering, Tijdscbr. Ent., vol. 97, p. 121, 1954 

 (figures of larval characters). 



Agromyza fr agar iae Mallocb, Ann. Ent. Soc. Amer., vol. 6, p. 307, 1913 (figure of 

 wing). — Frost, Mem. Cornell Univ. Exp. Sta., vol. 78, p. 43, 1924 (figure of 

 leaf mine on Rubus). 



Agromyza sanguisorbae Hendel, in Lindner, Die Fliegen der palaearktiscben 

 Region, fam. 59, p. 149, 1931 (figure of wing). 



Malloch's holotype was compared with five specimens (one in the 

 U. S. National Museum) sent by E. M. Hering. Hering restricted 

 the concept of A. spiraeae to those specimens the larvae of which 

 mine the leaves of the Kosoideae or tribe Roseae. This group in- 

 cludes the genera Rubus, Fragaria, and Rosa, but not Spiraea. 

 A. spiraeae belongs with those species having four developed dorso- 

 centrals, one being presutural. The margin and fringe of the calypter 

 are brown, and this species may be separated from A. isolata by the 

 lack of medial setae on the midtibia and the eye being more sub- 

 circular (fig. 15). A. spiraeae has been reared from serpentine mines 

 in the leaves of species of Fragaria and Rubus in California, New York, 

 New Jersey, and Pennsylvania. 



Agromyza subnigripes Malloch 



Agromyza subnigripes Mallocb, Ann. Ent. Soc. Amer., vol. 6, p. 334, 1913. 

 Agromyza aprilina Mallocb, Bull. IlUnois Nat. Hist. Surv., vol. 11, p. 359, 1915 

 (figure of head) . 



The adults are quite distinctive in the shape of the head and the 

 angulate third antennal segment (fig. 16). The shining mesonotum 

 bears five developed dorsocentrals and only four rows of acrostichals. 

 The larval host plants are unknown for this species, but are probably 

 in the Gramineae. I have seen specimens from Iowa, Illinois, 

 Indiana, New Hampshire, and from Manitoba. 



Agromyza varifrons Coquillett 



Agromyza varifrons Coquillet, Journ. New York Ent. Soc, vol. 10, p. 189, 1902. 



This species is very similar to A. trebinjensis Strobl, 1900. It 

 belongs to the group with M1+2 at or nearest the wing tip (fig. 17) 

 and without midtibial setae. The head has the genovertical plates 

 darkened nearly to the dorsal lower-orbital (fig. 18) and the gena 

 relatively narrow (fig. 19). The mesonotum is shining black and 

 bears two developed dorsocentrals. These latter two characters 

 separate A. varifrons from A. aristata, A. pallidiseta, and A. rubi. 

 No larval host plants are known and the species is not common. I 

 have studied only five specimens, from Iowa, Illinois, District of 

 Columbia, and Pennsylvania. 



