AGROMYZID LEAF MINERS FRICK 435 



this Holarctic species, but ho could find no morphological differences 

 between the color phases, even in the male terrain alia. Hering (1949) 

 offered a ke.y to subspecies based in part upon morphological differ- 

 ences. Several of the color phases considered by Hendol are known 

 in North America and a key for their separation is presented here (all 

 three subspecies have the mesonotum grayisli black witli yellow 

 vittae). 



1. Mesonotum without a yellow prescutellar area 2 



Mesonotum with a yellow prescutellar area ranunculi albipes 



2. Femora mostly yellow; anepisternum about one-half yellow. 



ranunculi flavoscutellata 

 Femora black or brown; anepisternum about one-third yellow. 



ranunculi praecox 



The larvae form serpentine mines in the leaves of Ranunculus spp. 

 and Anemone nemorosa L. in Europe. No host plants are known from 

 North America. 



Phytomyza ranunculi albipes Meigen 



Phytomyza albipes Meigen, Systematische Beschreibung der bekannten euro- 



paischen zweifltigeligen Insekten, vol. 6, p. 195, 1830. 

 Phytomyza flava (Fallen), Melander, Journ. New York Ent. Soc, vol. 21, p. 270, 



1913. 



This subspecies is known from three specimens from Washington. 



Phytomyza ranunculi flavoscutellata Fallen 



Phytomyza flavoscutellata Fallen, Diptera sueciae, vol. 2, No. 41 (Phytomizides), 

 p. 4, 1823. — Melander (part), Journ. New York Ent. Soc, vol. 21, p. 270, 

 1913 (40^0^, Portland, Oreg., and Moscow Mountain, Idaho). 



Phytomyza zetterstedti (Schiner), Melander (part), Journ. New York Ent. Soc, 

 vol. 21, p. 270, 1913 (19, Moscow Mountain, Idaho). 



There are five specimens in Melander's collection from Oregon and 

 Idaho. 



Phytomyza tanuncuU praecox Meigen 



Phytomyza rufipes Meigen, Systematische Beschreibung der bekannten euro- 



paischen zweifltigeligen Insekten, vol. 6, p. 194, 1830. 

 Phytomyza flavoscutellata (Fallen), Melander (part), Journ. New York Ent. Soc, 



vol. 21, p. 270, 1913 (1 9 , Moscow Mountain, Idaho). 



At present known from one specimen in Melander's collection from 

 Idaho. 



Phytomyza rufipes Meigen 



Phytomyza rufipes Meigen, Systematische Beschreibung der bekannten euro- 

 paischen zweifltigeligen Insekten, vol. 6, p. 192, 1830. — Hendel, in Lindner, 

 Die Fliegen der palaearktischen Region, fam. 59, p. 471, 1935 (figures of head 

 and wing). 



Another rather large Holarctic species with yellow frons, dark scu- 

 tellum, and mostly yellow femora. The thh*d antennal segment is 



