THE CRANBERRY GIRDLER. 9 
Taste I].—Number of eggs per female of the cranberry girdler, Whitesbog, 
N. J., 1915. 
4 
Pair No.1. Pair No. 2. Pair No. 3. Pair No. 4. 
Date of deposi- |Number| Date of deposi- | Number | Date of deposi- | Number | Date of deposi- | Number 
tion. of eggs. tion. of eggs. tion. of eggs. tion. of eggs. 
UTTNOG  Se eae eee 74) Uwe ees sooe TE ey OPE Ree ee COW ah ee peo be 55 
Jame Os sy 2s ee 985) Sunei2=: 225. Lele Maye235 eee 1033 Miulys253 eo 8 
Pune 82 ccle BOP UNE Sees se Do) Mai 2dr ees! OF duly; 2653S see 78 
June eee 2s sens 12} June4......... 6 | May 25 and 26 2 uly 27h = see 21 
SuMed sss eas 14 | June 5......... Ie At WN fee es ee Duly, 28S sees es 49 
JuneGlse 59 | May 28........ DB Sul ye29 es eee ae 3 
FM ee he 2 75 July: 30h 17 
| Dilys see 12 
161 | 160 | 235 243 
The greatest number of eggs laid in a single day by one female 
was 108, and the greatest number laid during the life of a given 
female was 243. The length of the egg stage varies with the season, 
those eggs deposited in May requiring a longer incubation period 
than do those laid in July, as shown in Table ITI. 
TABLE III.—Length cf the egg stage of the cranberry girdler, Pemberton and 
Whitesbog, N. J., 1915. 
Date of deposition. | Date of hatching. pensih Of Date of deposition. | Date of hatching. Lenstie of 
‘ ge. stage. 
Days. ; Days. 
Moy 20 see coats oi UIC Saree. wns US POulye2oeseaeee oe se PAU NS Ne ea Us 
IME 522) ee | ks CO) Sede eueee ge Rig Dl ye 268 PO ee ee eee OUMSIE. eae 6 
IMB Velo ete ona as oe CORE ee ere 16 DO eter Rees PAD ne eae ees 7 
ORR SA June 10. VS) Muly/Q7R 5. Sees Ss AI EE SE EES a 
Mavi 20 Se cee ine oe: Afbats)s bas Be oe ee TGreuily 28a eee eee AU ge 5 oN Sys 8 
TUNIC OL er Pee a MO Reese oe oe et AS he July; 302 seh. 2 ee AIC RGIS REE sate ul 
LUO NOL Ss She Saas aes OMe aA eye eS Meade Silks syenetsc ere eetges Once eres 6 
Sane ld eee ss. June 19 SP ils Augtainas oases snes AID AS EE aos eee 6 
Apne p12 ee oe aller Onboes S gets Us| AUS OD eiccieisicrcsteiss eels Aug, Losses ent 6 
lly 24). Fs. Lik te UAVS es Sek 8 
Average length of the egg stage, 9.63 days. 
LARVA STAGE. 
The larva leaves the egg through a hole which it cuts in the apex, 
or slightly to one side of the apex, and emerges as soon as the aper- 
ture is large enough to permit the passage of the head, crawling 
rapidly out and appearing very active at this period. In small cans 
the larve were fed fine cranberry roots, the bark and wood feeding 
habit being acquired apparently during later life. As remarked by 
Ainshe (12), some species of Crambinae defy all attempts to rear 
the larvee, and C. hortuellus falls into this class in the experience of 
the writer. 
88633°—Bull, 554—17——2 
