THE CANKERWORMS 



19 



Table 8. — Oviposition of individual moths of the fall canlcerworm, Wallingford, 



Conn., 1920. 



Moth No. 



Date 



female 



emerged. 



Date 

 male 

 added. 



Mated. 



First 

 eggs. 



Last 

 eggs. 



Total 

 masses. 



Total 

 eggs. 



Preovi- 

 position 

 period. 



1 



Nov. 18 

 ...do.... 



Nov. 18 

 ...do—. 



Nov. 19 

 ...do.... 



Nov. 19 

 ...do.... 



Nov. 20 

 Nov. 19 



2 

 2 



169 

 209 



Days. 

 1 

 1 



2 



3 



...do.... 



...do.... 



Nov. 20 



Dec. 3 



Dec. 4 



2 



310 



15 



4 



...do.... 



...do.... 



Nov. 19 



Nov. 19 



Nov. 23 



3 



355 



1 



5 



...do.... 



...do.... 



...... 



Nov. 20 



Nov. 22 



2 



257 



2 



6 



...do.... 



...do.... 



Nov. 19 



Nov. 19 



Nov. 19 



2 



261 



1 



7 



...do.... 



...do.... 



...do.... 



...do.... 



...do.... 



1 



237 



1 



8 



...do.... 



Nov. 19 



...do.... 



...do.... 



...do.... 



1 



227 



1 



9 



...do.... 



...do.... 





Nov. 20 



Nov. 22 



2 



251 



2 



10 



...do.... 



...do.... 







Nov. 19 



Nov. 19 



3 



279 



1 



11 



...do.... 



...do.... 



Nov. 19 



...do.... 



Nov. 23 



3 



384 



1 



12 



...do.... 



...do.... 



...do.... 



...do.... 



Nov. 28 



7 



277 



1 



13 



...do.... 



...do.... 



...do.... 



...do.... 



Nov. 23 



2 



317 



1 



14 



...do.... 



...do.... 



...do.... 



Nov. 20 



Nov. 22 



2 



280 



2 



15 



...do.... 



...do.... 



...do.... 



Nov. 19 



Nov. 19 



1 



228 



1 



16... 



Nov. 19 

 ...do.... 



...do.... 

 ...do.... 



Nov. 20 



Nov. 20 

 Dee. 15 



Nov. 28 

 Dec. 15 



6 

 1 



284 

 10 



1 

 26 



17 



Total... 





42 



4,335 

 255 











2.5 



3.5 











WEATHER RECORDS. 



Date. 



Temperature. 



Remarks. 



Minimum. 



Maximum. 



Average. 



Nov. 18 



Nov.19 



Nov. 20 



Nov.21 



Nov. 22...... 



Nov.23 



°F. 

 35 

 32 



37 

 29 

 32 

 37 



°F. 

 57 

 51 

 51 

 35 

 41 

 48 



°F. 

 42.3 

 41.3 



42.8 

 30.8 

 36.0 

 41.8 



Clear. 



Do. 



Do. 

 Light rain. 

 Rain. 



Do. 



OVIPOSITION. 



Whenever possible, the moths usually make their way out to the 

 smaller twigs before laying their eggs, although they sometimes 

 deposit them on the trunk and larger branches, and will lay almost 

 anywhere if they are unable to reach the places usually preferred 

 for oviposition. Instances are on record of the oviposition of eggs 

 on fence posts and on the sides of buildings. In captivity the moths 

 often lay their eggs on the tops and sides of the cages instead of on 

 the twigs provided for them. If halted by a barrier, they fre- 

 quently place their eggs on the trunk beneath it. 



Egg laying usually proceeds at a fairly rapid rate. Six of the 

 moths noted in Table 8 emerged, mated, and laid their entire sup- 

 ply of more than 200 eggs each, within 48 hours. All except one 

 moth (No. IT) disposed of all the eggs in their abdomens; for some 

 reason this particular moth laid only 10 eggs, dying with 183 re- 

 maining in her abdomen. The eggs may be laid in one large mass, 

 or divided among a number of smaller clusters. 



LONGEVITY OF THE MOTHS. 



In the protection of the rearing jars, some of the female moths 

 lived a long time. Of the 17 females noted in Table 8, all lived more 



