1909] Gall Midges of the Goldenrod. 247 



Presumably bred from same gall. Female, length 1 mm, 

 abdomen light yellowish, 16 antennal segments. 



Lasioptera favescens Felt. 

 A subapical or lateral oval gall. Male, length 2.5 mm, 

 abdomen light yellowish, 17 antennal segments, 

 stem f. Female, 15 antennal segments. 



Rhopalomyia lanceolata Felt. 

 On Solid a go sempervirens . 



Asphondylia monacha O. S. 

 Galls attached to one, or at most, two leaves. 

 On Solidago graniinifolia. 



Gall greenish, red marked, ribbed, fusiform, sessile, 

 length 6 mm. Male, length 2 mm, abdomen dark 

 fuscous, 19 antennal segments, stem §. Female, 

 length 3 mm, 18 antennal segments. 



Rhopalomyia fiisiformis Felt. 

 Gall green, red marked, fusiform, stemmed, length 

 13-14 mm. Male, length 2 mm, abdomen fuscous 

 yellowish, 19 antennal segments, stem J. Female, 

 length 3 mm, abdomen dark red, 18-19 antennal 

 segments. Rhopalomyia pedicellata Felt. 



On Solidago rugosa. 



Gall green, red marked, fusiform, length 1.6 mm. 

 Female, length 2 mm, abdomen dull red, 17 antennal 

 segments. Rhopalomyia clarkei Felt. 



On Solidago canadensis and 5. serotina. 



Oval galls between adherent leaves. Adult, length 

 1 mm, abdomen dark brown, 2 0-2 2 antennal segments. 



C ayn pioneiiromyia adhesa Felt. 



Bred from similar galls. Asphondylia monacha O. S. 

 Bred from similar gall. Female, length 2 mm, abdomen 

 silvery. 22 antennal segments. 



Lasioptera argeniisquamae Felt. 



Blister-like galls occuring in leaf tissues. 



Gall oval, black, on Solidago graminifolia. Male, length 

 1.5 mm, abdominal segments white margined pos- 

 teriorly, tarsi banded, 16 antennal- segments. 



Baldratia carbonijera Felt. 

 Gall grayish brown, blue margined, on Solidago squar- 

 rosa. Male, length 1.5 mm, abdominal segments 

 white spotted, 19 antennal segments. 



Baldratia squarrosae Felt. 

 Gall rosy, on Solidago rugosa. Female, length 2 mm, 

 abdominal segments white margined, posterior tars 



