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JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 17 
Table 1. Egg Stage of Mocis repanda, Brownsville, Tex., 1916 
Eggs laid 
1916 
Between 5 p. m. 4 Nov. 23 
and 9 a. m. Nov. 24 
Between 5 p. m. Nov. 24 
and 9 a. m. Nov. 25 
Between 9 a. m. Nov. 26 
and 9 a. m. Nov. 27 
Eggs hatched Number Average 
of days Temperature 
1916 Degrees F. 
December 1 
December 1 
December 2 
6 
69 
70 
72.5 
larger larvae in tin boxes, where they were fed on com leaves. Pupation 
began October 30 which would make the length of the entire larval stage 
from egg to pupa 21 days at the temperature of the laboratory or an 
average daily mean temperature of 76-^° F. When preparing to pupate 
the larvae fasten together leaves to form a cocoon, using only enough 
silk to fasten the leaves and spin a thin protection around the larva. 
The prepupal period occupied from 24 to 36 hours. 
The Pupa Stage 
The pupation period for 12 pupae was observed in the laboratory 
from October 23, to November 13, 1910. The number of days varied 
from 10 to 14, the average being 12. The temperature was not recorded. 
A few larvae pupated October 30, 1916, and the adults emerged Novem¬ 
ber 9. The time was 10 days at an average daily mean temperature of 
77° F. The pupation records of eight larvae which pupated during the 
latter part of September are given in Table II. 
Table II. Pupal Period of Mocis repanda, Brownsville, Tex., 1916 
Number 
Pupated 
Moth emerged 
Number 
Average 
of larvae 
of days 
temperature 
1916 
1916 
degrees F. 
2 
Sept. 29 
Oct. 7 
8 
79 
1 
Sept. 25 
Oct. 2 
7 
81 
1 
Sept. 25 
Oct. 3 
8 
81 
4 
Sept. 25 
Oct. 4 
9 
81 
Natural Enemies 
No parasites of Mocis re panda were reared during our observa¬ 
tions on this species at Brownsville, although large numbers of larvae 
and pupae were collected for this purpose, 161 larvae being taken in one 
collection. Mr. T. S. Wilson collected a small larva feeding on the grass 
Leptochloa nealleyi Vasey on November 22, which had two Euplectrus 
4 A11 references to clock time refer to “Standard Time.” 
