AGROMYZID LEAF MINERS — FRICK 371 



height) than that of 0. lantanae (about one-half). The larvae form 

 long slender mines in the leaves of species of Solidago and Aster. I 

 have identified specimens from California, Michigan, New York, 

 Pennsylvania, Maryland, and Georgia as belonging to this species. 



Ophiomyia proboscidea (Strobl) 



Agromyza proboscidea Strobl, Wiss. Mitt. Bosnien Herzegovina, vol. 7, p. 641, 1900. 

 Ophiomyia proboscidea (Strobl), Hendel, in Lindner Die Fliegen der palaeark- 



tischen Region, fam. 59, p. 194, 1931 (figures of head and wing). 

 Agromyza oralis Frost, Ann. Ent. Soc. Amer., vol. 29, p. 309, 1936. 



This species is certainly very similar to 0. texana but may be sep- 

 ai-ated by the straight subcranial margin (fig. 51), the somewhat 

 shorter male fasciculus, and the slightly larger size of about 2 mm. in 

 wing length (about 1.75 mm. for 0. texana). The larvae mine in 

 species of Hieracium and Satureia in Europe and it has been reared 

 from Nepeta sp. in North America. Only a few specimens have been 

 identified as 0. proboscidea and they were from Michigan, Indiana, 

 New York, New Jersey, and Louisiana, in the United States, and from 

 Guatemala. 



Ophiomyia punctohalterata (Frost) 



Agromyza punctohalterata Frost, Ann. Ent. Soc. Amer., vol. 29, p. 311, 1936. 



The holotype female is in the U. S. National Museum (No. 62968). 

 There is also a paratype female in the S. W. Frost collection. The 

 head is high and narrow and is forwardly inclined (fig. 52). The 

 halter has a white spot on the knob, which is a unique character for 

 this genus. Known from two specimens collected in Guatemala. 



Ophiomyia texana (Malloch) 



Agromyza texana Malloch, Ann. Ent. Soc. Amer., vol. 6, p. 319, 1913. 



The slightly smaller size (1.75 mm. in wing length as against 2 mm. 

 for 0. proboscidea) and the curving subcranial margin (figs. 53, 54) 

 serve to separate this species from 0. proboscidea. The larvae have 

 been reared from stem mines in two cruciferous plants, Roripa sp. and 

 Sophia sp. 0. texana is spread across the United States from Washing- 

 ton, Utah, New Mexico, Texas, Colorado, Wyoming, Kansas, and 

 South Dakota, to Illinois, Indiana, and Michigan. 



4. Genus Tylomyza Hendel 



Tylomyza Hendel, in Lindner, Die Fliegen der palaearktischen Region, fam. 59, 

 p. 181, 1931 (as subgenus) . 



This is a small genus of two species, one Palaearctic {T. pinguis 

 Fallen)^and the other Holarctic (T. nasuta Melander). There is a 

 hemispherical carina between the antennae, and the orbital setulae 



