THE CODLING MOTH IN THE OZARKS. 29 
NUMBER OF MOLTS. 
A large number of larvee were reared separately in pieces of apple 
in vials. Immediately after hatching they were transferred to the 
vials, and were examined daily, or at least every second day. At 
each examination they were changed to fresh food. 
Hither the frequent disturbance or the lack of apple seeds in their 
diet caused the larve to develop very slowly and to become dwarfed. 
The mature larve were very much undersized, and some of the moths 
that developed from them were scarcely larger than adults of the 
lesser apple worm (Hnarmonia prunwora Walsh). 
The normal number of molts is apparently 6 (7 instars), though 
3 of the 12 larve that reached maturity molted 7 times (8 instars). 
The period of development was so much lengthened and the larve 
were so dwarfed that no conclusions can be given as to the normal 
length of the various instars or the size of the larva in each. 
In Table XXXYV are given the individual records (omitting meas- 
urements) of the 12 larve that reached maturity. 
Taste XXXV.—Number of molts of the codling moth—laboratory .observations on 
larve reared in pieces of apple in vials. 
Molts. faved 
Individual | When ioeaiod 
No. hatched. eacdon 
Ne 1B JO 0S IV. We VI. VII. 
Leet eK. 2 Agig. 17, |pAug. 21 Ne .523..02% Sept. 2} Sept. 9 | Sept. 16 | Sept. 26 |.......... Oct. 13 
Qemcmmeeceesfoee Ovcese|oncre soscie Aug. 28 | Sept. 1} Sept. 7 | Sept. 14} Sept. 21 |.........- Oct. 6 
eee octere dl ae do..... Aug. 23 | Aug. 29 | Sept. 4 | Sept. 10 | Sept. 16 | Sept. 27 |.......... Oct. 15 
2 Nk aa eee (eae dorssss Ce Rane Saas Saja, W2| | TSS oR Me) ||US oip Te) ee eee se eee eee Octavia 
eee e ae] Gee douse Aug. 24| Aug. 29 | Sept. 4 | Sept. 11 | Sept. 17 | Sept. 27 |.......... Oct. 16 
(ae St eS dows. Aug. 23 | Aug. 28 | Sept. 1] Sept. 8 Goiece = Sept. 30 | Oct. 19 | Oct. 26 
(Sess aes Aug. 18 | Aug. 24 | Aug. 29 | Sept. 3 | Sept.10 | Sept.19 | Oct. 3 |.......... Oct. 21 
Sieeee tenses Sept. 3 | Sept. 9 | Sept. 14 | Sept. 21 | Sept. 29 | Oct. 13 | Oct. 30} Nov. 20 | Dec. 4 
Qe aie seeerise eae Of -2e 2 See CO sees Gost 525 seek Oct. 2 | Oct. 11 | Oct. 23 | Nov. 9 | Dec. 2 
LOR erste a| tee downs NEptis Sil Sept. LO! hoecee see Hepis2g | POCt. ads) | Oct, 2Q5r|se.sseseee Nov. 20 
uh rs seg 3 ol eae Gorse: SeppsfOniss dos ss seleo. gees. = Ociyr 2) |TOcty is; (Octh28)| ase Nov. 27 
1 See eae Goleene Sept. 8 | Sept. 13 | Sept. 20 | Sept. 28 |...do..... Octs (2bs|beeeeseees Nov. 17 
NATURAL ENEMIES. 
On May 6, while bagging fruit and collecting codling-moth eggs, 
about a dozen specimens of a red mite (determined by Mr. N. Banks as 
Trombidvum sp.) were observed crawling about the twigs and leaves. 
By accident one of them got into the box of collected codling-moth 
eggs on leaves. On examining the eggs in the laboratory later, the 
mite was found in the act of eating one of them. The egg upon 
which it was operating was in the black-spot stage. When the mite 
had finished, the egg had the appearance of having hatched, except 
that the black head and cervical shield of the embryo remained visible 
underneath the egg shell. The mite was then allowed to attack a 
larva that was just issuing from the egg, having crawled nearly all the 
