136 
Journal of Agricultural Research 
Vol. XIV, No. 3 
No attempt was made to determine specifically the individuals of the 
genus Feltia, of which it is probable that the following four species were 
taken: Feltia subgoihica Haworth, F. annexa Treitschke, F. gladiaria 
Morrison, and F. jaculifera Guenee. 
The material collected and examined embraces a little over 11,000 
individuals, representing 3 families and about 20 species. Table I gives 
the results of an examination of this large number of moths to determine 
the sex. No extended resum6 is attempted in the text beyond a brief 
statement of some of the more salient facts. 
Of the 11,222 moths examined, 8,025, or 71.5 per cent, were males; 
3,197, or 28.5 per cent, were females. In only one species, Noctua 
c-nigrum , did the females taken equal or exceed the males. 
Table I .—Number and percentage of males and females of various species of Lepidoptera 
taken at a light trap, Hagerstown, Md., igi 6 
Species. 
Number 
of males. 
Number 
of females. 
Total. 
Percent¬ 
age of 
males. 
Percent¬ 
age of 
females. 
Apantesis vittata Fabricius. 
h I 5 8 
25 
1,183 
97*9 
2. I 
Apantesis arge Drury. 
14 
3 
17 
82. 3 
17.7 
Estigmene acraea Drury... 
404 
69 
473 
85*4 
14. 6 
Diacrisia virginica Fabricius. 
66 
8 
74 
88.0 
12. 0 
Isia Isabella Smith and Abbot. 
256 
42 
298 
86. 0 
14. 0 
Halisidota tessellaris Smith and Abbot. . 
282 
123 
405 
69.6 
3 °* 4 
Datana ministra Drury. 
47 
19 
66 
71.2 
28.8 
Arsilonche albovenosa Goeze.. 
hi 
II 
122 
90.0 
10. 0 
Autographa biloba Stephens. 
38 
2 
40 
95 - 0 
5 - 0 
Autographa simplex Guenee. 
223 
71 
294 
75-8 
24. 2 
Meliana diffusa Walker. 
159 
IQ 
178 
89.4 
10. 6 
Polia renigera Stephens. 
192 
77 
269 
7 i -4 
28.6 
Caenurgia erechtea Cramer. 
i >437 
833 
2, 270 
64. I 
35-9 
Caenurgia crassiuscula Haworth. 
973 
566 
1, 539 
976 
64- 5 
35 - 5 
Cirphis unipuncta Haworth. 
552 
424 
S6- 5 
43 - 5 
Noctua c-nigrum binnaeus. 
Feltia spp. 
• 95 
2, 018 
107 
798 
202 
2, 816 
47. 0 
71. 7 
53 -o 
28. 3 
Total. 
8, 025 
3 > 197 
11, 222 
7 1 * 5 
! 
28. 5 
Table II gives the percentage of gravid females and shows that of 
3,197 individuals dissected, 1,857, or 58 per cent, were gravid. These 
gravid females make up 16.6 per cent of the 11,222 moths examined. 
It will be noted that all the females of four of the six species of Arc- 
tiidae under observation were gravid, and in the two other species the 
gravid females represent 85.5 per cent and 96 per cent of females col¬ 
lected. These facts, together with data as to the number and develop¬ 
ment of the eggs, are to be found in Table III. 
