4 BULLETIN 239, U. S. DEPARTMENT OF AGRICULTURE. 
DISTRIBUTION. 
The collection of Tingitidae at the U. S. National Museum contains 
few specimens of this species. These have been recorded, by Mr. 
Heidemann in his paper as follows: Kirkwood, Mo., August 10 
(Riley, Pergande), found on Solanum carolinense and Solanum el-ae- 
agnifolium; Lavaca County, Tex., June 21; Columbus, Tex., July 29, 
1879 (Riley collection), on coffee weed (Cassia sp.) and Solanum sp.; 
El Reno, Okla., July 12, 1909; Norfolk, Va., June 12, 1913 and 1914 
(Fink), and the author stated at the time "It is recorded as found 
on eggplants in great abundance.' 7 The species was also found by 
Dr. F. H. Chittenden, August 12, 1913, and later, and by others, 
including the writer, in the District of Columbia, and by the writer 
in Maryland and at Occoquan, Va. Judging from the localities 
already known it is a native American species and seems to have a 
range of distribution extending from the South Atlantic coast to the 
Southwestern States. 
SEASONAL HISTORY. 
THE ADULTS. 
Early in spring, almost as soon as eggplants are set in the field, 
the hibernating adults begin to infest them and establish colonies. 
Thus adults and eggs were found. as early as May 20. The adults 
reproduce and feed the entire summer on the eggplant, but migrate 
to the horse nettle (Solanum carolinense) during the latter part of 
August and the first week in September, when the season for eggplant 
is about over. Here they continue breeding until cold weather sets 
in. The adults hibernate in the shriveled leaves or in the ground 
under debris, reinfesting the next crop when set out. 
The egg-laying period in the field lasts from four to five days. In 
the laboratory the duration is slightly longer, the temperature aver- 
aging 75° F. Table I indicates the date and number of eggs depos- 
ited bv three females confined in the laboratory. 
Table I. — Number of eggs 
ed by females of the eggplant lace-bug, Norfolk, 
Va., 1914. 
Female A. 
Female B. 
Female C 
Date. 
Number 
of eggs. 
Date. 
Number 
of eggs. 
J. to Number 
Date - , of eggs. 
June 16 
57 
30 
34 
44 
23 
June 24 
30 
41 
23 
23 
July 12 
28 
June IS 
July 13. 
31 
June 20 
July 15 
42 
June 22 
Julv 19 
15 
June 24 
Total 
188 
117 
116 
Females that were observed in copulation on July 12, 1914, gave 
the first complement of eggs July 14, 1914. 
