Apr. 15, 2914 
Corn-Leaf Blotch Miner 
27 
La Fayette, Ind., both by the author and by Mr. Philip Luginbill, in 
1912, while it was reared by Mr. G. G. Ainslie at Lakeland, Fla., and by 
Mr. J. J. Davis at Danville, Ill., in the same year. This parasite is thus 
known to cover a pretty wide range, and future rearings may show it to 
be present wherever its host is found. While nothing definite is known 
of its life history, it appears that the complete life cycle approximates 
that of its host. The larvae of the parasite kill the larva of the host at 
or about the time the latter reaches maturity. Sometimes as many as 
eight of the larvae of the parasite are found in one host larva. As soon 
as these are grown, they leave the body of the host and crawl out into the 
gallery a short distance to pupate. When they first pupate they are 
white, but later they turn black. 
Diaulinus pulchripes Cwfd.—Mr. J. C. Crawford (1912) has recently 
described this species from two specimens in the Ashmead collection from 
Algonquin, Ill. Prof. Webster reared three specimens of this species 
from a miner in grass at Urbana, Ill., in August, 1902. The author 
reared a number of specimens from Agromyza parvicornis at La Fayette, 
Ind., in 1912. Nothing is known of its life history. 
Diaulinus websteri Cwfd.—This species was reared quite plentifully 
from Agromyza parvicornis in corn leaves at Salt Lake City, Utah, in 
1912, by Mr. C. N. Ainslie. It was recently described by Mr. Crawford 
(1912), the habitat being given as Tempe, Ariz. 
Zagrammosoma multilineata Ashm.—Ashmead (1888) described this 
parasite under the genus Hippocephalus in 1888. The specimens were 
reared in 1887 from Lithocolletis ornatella Chambers on locust. Prof. 
Webster reared it from a species of Lithocolletis from Ohio in 1893. 
The author reared it from Agromyza parvicornis in 1912 at La Fayette, 
Ind. Nothing is known of its life history. Repeated attempts were 
made by the author to rear it, as it appeared to be quite common, but 
unless the pupae were collected just before the adults were ready to issue 
they would not emerge. 
Sympiesis sp.—This parasite was quite common at La Fayette, Ind. 
It seems, however, that for some unknown cause only a very few females 
were reared; consequently they have not been determined specifically. 
Doubtless they are new. Prof. Webster reared Sympiesis nigripes 
Ashm. from a lepidopterous leaf-miner in bur oak in Ohio in 1893. Mr. 
Parks reared a species of Sympiesis in 1909 from a blotch miner in com 
at Wellington, Kans. Mr. G. G. Ainslie also reared it from the corn- 
leaf blotch miner at Hurricane Mills, Tenn., in 1912. The author reared 
it from Agromyza parvicornis at La Fayette, Ind. It is an internal 
parasite, but further than that nothing is known of its life history. 
Closterocerus tricinctus Ashm.—This species (PI. IV, fig. 1) was de¬ 
scribed by Ashmead (1888) under the genus Pleurotropis, with the 
statement that it was reared from a Lithocolletis larva on sycamore. 
Prof. Webster reared it from a miner in Panicum multifolia at Urbana, 
