388 The Ohio Naturalist. [Vol. XV, No. 2, 



Fig. 58. Fraxinus americana affected by the mite Eriophyes 



fraxini Garman. 



Phxtoplus fraxini Garman, 12th Rep. St. Ent. Ills. 

 Cook, Ins. Galls Ind. 862. 



Leaf gall, hemispherical, projecting on upper surface and show- 

 ing trichomatous (fuzzy) opening below. Heavily clustered. 

 Green, later discoloring. 1-2 mm. diameter. Not common. 

 Rye Beach, July 19. 



Fig. 59. Stachys aspera affected by a gall-gnat, undetermined. 



Bulbous stem enlargement, usually at base of petioles, which 

 are often involved. Size various, 5-20 mm. diameter. Color 

 normal. The gall is thoroughly tunneled by the orange larvae 

 before they emerge. Common. Late July. 



Fig. 60. Teucrium canadense affected by a gall-gnat, 

 undetermined. 



Stem gall of the same general character as the preceding, and 

 like it, probably unreported. May be on main stem, petiole 

 or peduncle, singly or in chains. 5-8 x 8-20 mm. Fairly com- 

 mon. July 22. 



Fig. Gl. Cephalanthus cornutus affected by the mite 

 Eriophyes cephalanthi Cook. 



(Identification by Mr. Nathan Banks). 



Leaf gall of minute size, usually so abundant as to give leaf 

 a granular appearance. Evident as small hemispherical pro- 

 jection from upper surface, open beneath and lined copiously 

 with fine fuzzy (trichomatous) growth. Young leaves are fre- 

 quently seriously deformed and stunted by these galls. Common. 

 Mid-July. 



Fig. 62. Solidago canadensis affected by the trypetid fly 

 Eurosta solidaginis Fitch. 



Acinia solidaginis Fitch, 1st Rep. Ins. N. Y. 771. 

 Tephritis asteris Harris. 

 Trypeta solidaginis Cook et al. 

 Stcbbins, Bull. 2, Springfield Mus. 51. 



Spherical stem gall, with a single central larval chamber, 

 containing a maggot. Green, smooth, 2 cm. in diameter. Fairly 

 abundant, esi)ccially at Huron. 



Fig. 63. Solidago canadensis affected by the moth Gonori- 

 moschema gallae-solidaginis Riley. 



Gelechia gallae-solidaginis Riley, 1st Rep. Ins. Mo. 173. 

 Stcbbins, Bull. 2, Springfield Mus. .51. 



Stem gall, being an elongate spherical to spindle-shaped 

 swelling, nonnal color, containing single Icpidopterous larva in 

 large central chamber. 30-40 mm. long, and 10-20 mm. wide. 

 Common. 



