Oct. io, 1913 
Serpentine Leaf-Miner 
85 
Three specimens have been swept from growing wheat at Manhattan, Kans., by 
Mr. C. N. Ainslie and one specimen from wheat at Lincoln, Nebr., by Mr. Geo. I. 
Reeves, of the Bureau of Entomology. 
The following localities are represented in the collection of Mr. C. W. Johnson: 
Twin Rock, Pa. (Johnson); Nantucket, Mass. (J. A. Cushman); Norwich, Vt. (John¬ 
son); Hanover, N. H. (Johnson). 
The species has never become a serious enemy of wheat or oats. 
Agromyza virens Loew.—This species was reared from larvae taken in root stems of 
white clover at La Fayette, Ind., by the senior author in August, 1886. The maggots 
were found singly in 
the stem, sometimes 
just under the epider¬ 
mis, and sometimes in 
the center. In either 
case parallel channels 
were excavated, the 
larvae working from the 
point where the stem 
originated. These flies 
were determined ten¬ 
tatively as Oscinis sp., 
and a report 1 of the 
rearing describing the 
larva and pupa was 
published at that time. On October 19, 1898, these flies were reared from larvae taken 
in the pith of the garden sunflower (Helianthus annuus) at Wooster, Ohio. 
Mr. Theo. Pergande reared adults of this species from stems of Mulgedium acumina¬ 
tum collected by the senior author at La Fayette, Ind., in November, 1885. Several 
undetermined hymenopterous parasites were reared from this material. These bear 
No. 3640. Mr. Pergande also reared one adult miner on April 18, 1883, from stems of a 
weed collected by Mr. Albert Koebele at Holdemess, N. H., in October, 1882, and 
containing at that time mostly pupae. He also reared an adult from a stem of Ambrosia 
artemisiaefolia (ragweed) received January 6, 1890, from A. M. Sharp at Gladbrook, 
Iowa. 
It has also been reared from heads of Rudbeckia sp. at Dallas, Tex. 
There are in the collection of the United States National Museum two specimens 
from Cambridge, Mass., marked "mining in stems of weed'’ (H. G. Hubbard); two 
“from stems of Ambrosia,” March, 1895, District of Columbia; one "from Nabalus 
albus May 14, 1883; two from California (Alameda and Los Angeles) collected by 
Mr. Coquillett; one from Flagstaff, Ariz. (H. S. Barber); thirteen from Toronto, 
Canada (William Brodie); one from Plummers Island, Md., and four from Washington, 
D. C., collected by Mr. W. L. McAtee. 
Agromyza melampyga Loew, var. marginalia Malloch.—Three adults were reared 
from larvae mining in leaves of grass (Paspalum dilatatum) by Mr. Philip Luginbill at 
Columbia, S. C., October 4, 1912. 
Fig. 17.— Agromyza coquilletti. Greatly enlarged. (Original.) 
SUMMARY 
The serpentine leaf-miner is the larva of a minute yellow and black 
fly which is common in alfalfaTields during the summer. 
It is generally distributed over the United States, having a wide range 
of food plants. 
1 Riley, C. V. The clover-stem maggot (.Oscinis sp.). U. S. Comr. Agr, Rpt. 1886, p. 582, 1887. 
