36 
BULLETIN 127, U. S. DEPARTMENT OF AGRICULTURE. 
Finally a parasite pupa was noted in a leaf mine with, the remains of 
a tuber-moth larva . . When the adult issued it proved to be Zagram m o- 
soma flavolineatum. More experiments were carried on. using only 
material where the tuber-moth larva? occurred as leaf-miners and 
were less than hah grown. The parasite was seen to oviposit in 
these larva?, and it was successfully reared through to the adult. 
This parasite thus far has not proved to be of much importance, 
and seems unpromising, as the adult is so slow and deliberate in its 
movements that a tuber-moth larva in a large mine can move about 
and often escape the ovipositor of the parasite. 
The following record gives the length of its life cycle: 
1915. 
August 17. — Z agrammosoma flavolineatum ovipositing in tuber-motli larva. 
August 29. — 1 Z agrammosoma flavolineatum adult issued. (Male.) 
August 30. — 2 Z agrammosoma flavolineatum adults issued. (Males.) 
August 31. — 1 Z agrammosoma flavolineatum adult issued. (Male.) 
September 1. — 1 Z agrammosoma flavolineatum adult issued. (Female.) 
September 2. — 2 Zagrammosoma flavolineatum adults issued. (Male and female.) 
Lite cycle 13 days at average mean temperature of 75 = F. 
SY1EPIESIS STIGilATIPEXXIS GERAULT. 1 
During 1914 and 1915 tuber-moth material collected at Pasadena 
during late fall gave great numbers of a small parasite, the male of 
which (fig. 20) had 
J / ' ('- jg? branched antenna?. 
1 f L^y* At about the same 
time an examination 
of mines on potato 
leaves often showed 
a parasitic larva (fig. 
21) feeding extern- 
ally on a partially 
grown larva of the 
tuber moth. When 
these were reared 
they proved identi- 
cal with those issuing 
in the parasite cages. 
The parasite was 
reared with ease in 
the laboratory, and 
it oviposited readily in leaf -mining tuber-moth larva? when half grown 
or slightly smaller. The host is soon killed and within a short time 
becomes semihquid, and the development of the larva is very rapid. 
TThen mature (fig. 22) it crawls into a corner of the mine and, without 
spuming a cocoon, pupates. 
Tig. 20.— Sympiesis stigmatipennis: Male. Much enlarged. (Original.) 
Chittenden No. 2230* 
