AGROMYZID LEAF MESHERS — FRICK 389 



12. Third antennal segment black 13 



Third antennal segment yellow meridiana 



13. Genovertical plates dark from vertex to at least the ventral upper-orbital . 14 

 Genovertical plates dark from vertex to dorsal upper-orbital 15 



14. Arista subequal in length to the eye height; mesonotum with about 19 setu- 



lae in the intraalar row posterior to the transverse suture .... cassiae 



Arista not more than four-fifths of the eye height; about 16 setulae in the 



intraalar row tnalvae 



15. Forefemur brown or black, at most lighter brown distally 16 



Forefemur distally yellow for a distance subequal to the femoral diameter. 



ipomoeae 



16. Frontal vitta relatively wide, not more than 1.4 times as high as wide. 



ambrosiae 

 Frontal vitta relatively narrovr, not less than 1.7 times as high as wide. 



verbenae 



Phytobia {Calycomysd) allecta (Melander) 



Agromyza lateralis Williston, (not Macquart, 1835), Trans. Ent. Soc. London, 



1896, pt. 3, p. 428, 1896 (figure of head). 

 Phytobia (Calycomyza) allecta (Melander), Frick, Ann. Ent. Soc. Amer., vol. 



49, p. 298, 1956. 



The larvae have elongate anal lobes and form large blotch mines 

 in the leaves of Bidens frondosa L., Helianthus spp., and Rudbeckia 

 spp. The species occurs east of the Rocky Mountains in the United 

 States and Canada and on the islands of St. Vincent, Haiti, and 

 Puerto Rico in the West Indies. 



Phytobia (Calycornyza) ambrosiae Frick 



Phytobia (Calycomyza) ambrosiae Frick, Ann. Ent. Soc. Amer., vol. 49, p. 299, 

 1956. 



This species has been reared from Ambrosia arfemisiifolia L. and 

 A. trifida L. Thus far it has been found in Indiana, Tennessee, and 

 Florida. 



Phytobia {Calycomyza) artemisiae (Kaltenbach) 



Agromyza artemisiae Kaltenbach, Verb. Naturh. Ver. Preuss. Rheinlande West 



falens, vol. 13, p. 236, 1856. 

 Dizygomyza (Calycomyza) artemisiae (Kaltenbach), Hendel, in Lindner, Die 



Fliegen der palaearktischen Region, fam. 59, p. 66, 1931 (figures of head, 



wing, and puparium). 

 Phytobia (Calycomyza) artemisiae (Kaltenbach), Frick, Ann. Ent. Soc. Amer., 



vol. 49, p. 294, 1956 (figures of larval characters and leaf mines). 



The larvae of this Holarctic species make blotch mines in the leaves 

 of Artemisia spp. and Rudbeckia spp. in North America. The species 

 appears to be generally distributed over the United States and 

 Canada. It is known from Guatemala. 



