INSECT GALLS 
producer passes the winter in the larval form and 
emerges in June. 
Gnorimoschema __gallaesolidaginis, Riley. The 
hosts are the same as in the preceding species. The 
producer emerges in August and winters in the imago 
form. 
Gnorimoschema gallaeasterella, Kellicott, on the 
golden-rods Solidago latifolia, L., and Solidago caesia 
var. axillaris, Gray (seldom). Resembles the former 
species closely in its life history. Both species of 
this genus are originated on the lower half of the 
stem of the host. 
Stagmatophora ceanothiella, Cosens. Host Cea- 
nothus americanus, L. Usually found terminal on 
the stem of New Jersey Tea, in which case the flower 
cluster is aborted. The producer passes the winter 
in the larval state and emerges in June. 
Order DieTEra. 
Cecidomyia bulla, Walsh, on the sunflowers Heli- 
anthus decapetalus, L., and Helianthus divaricatus, 
L. Occur usually on the stem of the hosts as small 
flask-shaped swellings. 
Cecidomyia balsamicola, Lintner. Host Abies 
balsamea (L.), Mill. Consist of a slight enlarge- 
ment of the needles of the balsam produced by a 
folding of these organs. 
Cecidomyia impatientis, O.S. Host Impatiens 
biflora, Walt. A spherical, polythalamous gall at- 
tached to the host plant by a tapering stalk. 
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