16 



BULLETIN 427, XJ. S. DEPARTMENT OP AGEICULTUEE. 



takes place at all hours of tlie day. Daylight oviposition out of 

 doors occurs only on cold and dark days. A single moth under labor- 

 atory conditions will deposit 150 to 250 eggs with the extremes of 38 







M 



1^ 





" 





^^^^£^^^ 



^*^*...s^ .: ->»„-i ■ ■ 





4 





^^ •-.;■; . 



."*!-- 



^Krv^i^^S 



t&M 







, ' ': .■ ' : 



- • 



^^j 







■■i'' 





^ m' 1 





fi. I 





]^^ 





," 



JM^, 



: n^S 



w^ 





;■■:» 







' ■" *■?, ■:;;'; 





:r''j'::'':^0U-O 1 





"--■■'' ^ - ' .?^S;r',:' 



ff 



1 



p- 



'■' r ■ ' ' r^^^}S/mB 



r-.m 





^^^^. 



; ^^H 



■ '?'■'''; -i'.-i ■■'•jj 



r' 





«■ ■ '^^PHi 



dl 



4^, . r*..-"^*'^ 



A 



J- ■ 







Fig. 13.— The potato tuber moth as a leaf-miner on tomato. An uncommon form of injury. (Original. ) 



for the minimum and 290 for the maximum; oviposition is completed 

 in from 6 to 1 7 days, and by far the greater number of eggs is usually 

 deposited in about 4 days. 



