AGROMYZID LEAF MINERS — FRICK 433 



Phytoniyza nigripennis Fallen 



Phijtomyza nigripennis Fallen, Diptera sueciae, vol. 2, No. 41 (Phytomyzides), 

 p. 2, 1823. — Hendel, in Lindner, Die Fliegen der palaearktischen Region, 

 fam. 59, p. 439, 1935 (figures of head and wing). 



Phytomyza dematidis (Loew), Melander, Journ. New York Eut. Soc, vol. 21, 

 p. 269, 1913. 



This is a shining black species having the frontal vitta brown, the 

 femora distally reddish with the forefemur more yellowish, the calypter 

 with yellow margin and fringe, and the wing strongly tinged brown. 

 Phytomyza nigripennis is a large species (wing length not less than 3 

 mm.) having one upper-orbital and three lower-orbitals. I have seen 

 specimens of this Holarctic species from Wisconsin and Ontario. 



Phytomyza periclymeni de Meijere 



Phytomyza ilicicola (Loew), Melander (part), Journ. New York Eat. Soc, vol. 



21, p. 270, 1913 (] cT, 19, Oroville, Wash.). 

 Phytoniyza nigra (Meigen), Melander (part), Journ. New York Ent. Soc, vol. 21, 



p. 270, 1913 (Id^, Oroville, Wash.). 

 Phytomyza periclymeni de Meijere, in Hendel, Wiener Ent. Zeitschr., vol. 39, p. 



71, 1922. — Hendel, in Lindner, Die Fliegen der palearktischen Region, fam. 



59, p. 452, 1935 (figures of head and wing). — Frick, Ann. Ent. Soc. 



Amer., vol. 47, p. 373, 1954. 



This Holarctic species is one of a group of four species having the 

 frons, antenna, and tarsi dark, the forefemur distally yellow to red- 

 dish brown, two equally strong upper-orbitals, and four or five rows 

 of acrostichal setae. Phytomyza periclymeni may be separated from 

 P. gregaria, P, persicae, and P. ilicicola in having the eye subcircular 

 and the mesonotum dull bluish black with the acrostichal setae ex- 

 tending posteriorly to the third dorsocentral. The larvae make blotch 

 mines in the leaves of Symphoricarpos spp. and Lonicera spp. I have 

 seen specimens from Washington and California. 



Phytomyza persicae Frick 



Phytomyza nigritella (Zetterstedt), Frost, Mem. Cornell Univ. Agr. Exp. Sta., 



vol. 78, p. 81, 1924 (figure of leaf mine). 

 Phytomyza persicae Frick, Ann. Ent. Soc. Amer., vol. 47, p. 369, 1954. 



Phytomyza persicae is one of a group of four species liaving the frons, 

 antenna, and tarsi dark, the forefemur distally yellow to reddish 

 brown, two equally strong upper-orbitals, and four or five rows of 

 acrostichal setae. It may be separated from P. gregaria, P. pericly- 

 meni, and P. ilicicola in having the forefemur distally reddish brown, 

 the mesonotum black, dull gray pollinose, and the acrostichals ex- 

 tending posteriorly to the fourth dorsocentral. The larvae make 

 serpentine mines in the leaves of Prunus persica L. I have not seen 



