8 4 
Journal of Agricultural Research 
Vol.I.No. I 
During July, 1912, Mr. Philip Luginbill at La Fayette, Ind., reared these adults 
from mines in leaves of volunteer timothy growing in protected places and was able 
to secure all stages of the insect. 
The eggs are deposited in the cellular tissue just above the epidermis on the ventral 
side of the leaf, and in 
punctures similar to 
those made by Agromyza 
pusilla and A. parvicor - 
nis. 
The egg stage is four to 
five days. 
The larvae feed in one 
leaf until mature and 
pupate in the mine. The 
larval period is 8 to 10 
days, the pupal period, 
13 days. This makes a 
total of 27 days elapsing 
Fig. 15,— Agromyza angulata. Greatly enlarged, (Original.) from egg to adult. 
Mr. Luginbill and Mr. 
Phillips were also able to transfer these miners from timothy to wheat, rearing one 
generation from wheat, using as parents flies reared from timothy mines. 
The number of generations is not known. The following species of parasites were 
reared by Mr. Luginbill in connection with his studies in Indiana: 
Polycystus foersteri Cwfd.; Derostenus diastatae How.; Derostenus agromyzae Cwfd.; 
Pleurotropis rugosithorax Cwfd.; Entedon thomsoni Cwfd.; Notanisomorpha ainsliei 
Cwfd. 
A single specimen was collected at Plummers Island, Md., July 28, 1912, by Mr. H. 
L. Viereck, and specimens collected at Niagara Falls, N. Y., and Aubumdale, Mass., 
are present in the private collection of Mr. C. W. John¬ 
son, curator of the Boston Society of Natural History. 
The species has never become sufficiently abundant to 
attract attention. 
Agromyza coquilletti Malloch.—This species (fig. 17) 
was reared from a puparium found among the basal 
leaves of volunteer wheat at Bucklin, Kans., November 
6, 1909, by Mr. C. N. Ainslie. It was also reared at 
Fort Collins, Colo., by Mr. Ainslie from a larva mining 
a leaf of oats, June 30, 1910. 
From three larvae mining leaves of Hordeum jubaium 1 
in the same locality on July 16, 1910, one adult of this 
species and seven hymenopterous parasites were reared. 
These were determined by Mr. J. C. Crawford as Dero¬ 
stenus pictipes Cwfd. 
Larvae were observed mining leaves of wheat at 
Roosevelt, Utah, June 25, 1912, by Mr. C. N. Ainslie, 
but from this material only parasites of the genus Pteromalus issued. 
One specimen was reared from a blade of wheat at La Fayette, Ind., July 2, 1912, 
by Mr. Philip Luginbill, and the junior author reared one adult of this species from a 
larva mining a leaf of oats taken at Shoshone, Idaho, July 17, 1912. 
Fig. 16.—Puparium of Agromyza 
angulata , with lateral view of 
anal appendages at left. Greatly 
enlarged. (Original.) 
1 In this connection we note that Mr. Ainslie reared from various-shaped mines in Hordeum collected at 
Myton, Utah, June 27,1912, two flies determined by Mr. Walton, of the Bureau of Entomology, as Hydrellia 
scapularis Eoew. So far as can be ascertained, this is the first instance of the rearing of this species and the 
first report that it affects vegetation. 
