
























& Phan my " ‘ 2 
rd as is 5 
Brownsville the past spring but we have not collected Limmnerium 
y 28. Meteorus laphygmae, which was rare in the spring, was 
3 during the fall and is appearing in collections made the 
part of December. Euplectrus platyhypenae was numerous the 
part of May but has not been collected in numbers since. 
18 piliventris was present in the spring, rare during the sum- 
id numerous in the fall. Meteorus was round here in large num- 
1 1912 and Mr. Smythe reared the following parasites from the 
mS: Spilochalcis delira, Spilochalcis pallens, Myrmicomorpha 
Osa, Dibrachys meteori, Hemiteles *p., Mesochorus sp., Eupelminus 
: During the year 1913 this species was not so numerous and we 
sted none of its parasites. Four of the Meteorus: parasites - 
leomorpha perniciosa, Spilochalcis pallens, Dibrachys meteori, and 
sel@s sp. were reared from Rnogas laphygmae by Mr. E. G.° Smyth. 
‘Che METHODS USED IN THE STUDY OF LAPHYGMA. | 
ee OF ee — a ee ieee oe 
ie 
Larvae are collected from the field and divided into two lots. 
#1 and 6th stege larvae are put in one lot, and those in the 4th 
mand under are put in another lot. These larvae are all isolated 
—ouhce tin salve boxes and are examined every day or every other 
seems necessary. It is necessary to isclate the larvae to keep 
from eating one another. The tin boxes are easily handled by 
ng them 5 high on panes of glass, usually one hundred in a lot, 
Oné note is made for each lot. A record is kept of the numbers © 
‘emerge of each species of parasite, and of the number which die 
igus or of bacterial disease. The used tin boxes are thrown into 
from which they are later removed by the Mexican laborer and 
. and sterilized by beiling water. | 
' £«.-Ophion bilineatus, Frontina archippivora, and Euplectrus 
byhypenae, are secured usually from the larvae in the 5th and 6th 
Archytas piliventris emerges from the pupae formed from the 
46 collected in the 5th and 6th stages. Meteorus laphygmas, Rhogas 
mee, Apanteles harnedi, Zele melleus, Chelonus texanus, Limner- 
f Gubitata, and Pristomerus appalachianus emerge from the larvae in 
| $rd and 4th stages. 
“-8) In order to carry on life-history work with the parasites 
is necessary to keep Laphygma in the laboratory in all stages at 
times so that material will be ready when parasites are secured. 
ma aduits are kept in cages made of large No. 2 street lamp 
set on glass and covered with glass. The moths are feed on thin 
syrup which is put in the cages on blotting paper. They are fed 
) first day and at night corn leaves are put into the cages for them 
lay their eggs on. The eggs are removed each morning and placed in 
"boxes and labeled and are afterwards examined twice a day and the 
8 Of hatching recorded. The larvae which hatch are reared in large 
bers in 4-ourice tin boxes and are later placed in battery jars. 
a Larvae to be infested with parasites are confined in large 
S or in battery jars and are left one or two days with the para- 
after which they are isolateuw in-l-ounce tin boxes. The battery 
seem to be preferable, as the parasites sometimes do not mate in 
vials. | 
} We have had little success with wire cages of any kind as 
