LIFE HISTORY AND HABITS: THE PUPA. 
85 
Taste XLII.—Length of pupal instar of the plum curculio and time spent in the soil as 
larva and as adult, Douglas, Mich., 1910. 
= + ; a Days in 
ate ate o ate larval eye we Fe a 
Individual No larva | Date of | transfor-| beetle | stage Dy any Paes fa otal 
‘ left the |pupation.| mation | left the | before | BMP | Dee eleaes 
fruit. to beetle. | soil)” | pitpa= | SP2S°*)||2m/sou. |) “son. 
tion. 
Ul AAS OCS IAS See June 30] July 11] July 26] Aug. 1 11 15 6 32 
os BS Ses ie eee eee) ae do....| July 12-| July 25] July 29 12 13 4 29 
MEER em face aise can eaees July 2] July 13} July 27} Aug. 2 ll j4 6 31 
ameter toca see seca ae seen [Se do= --|fuly- 21 || Aug. 72) |-Aug. 7 19 12 5 36 
De eriaeanie Saez ore cinched ee July 4 |...do. ee COs ers eae eS A; 12 6 35 
WEE geet ee eo oe ccc nelese Goze -| uuly, 225) Anjos = 1) Ae. 55 18 10 4 32 
Sa SORE G eee an a ge do. -do. Aug. 2] Aug. 8 18 11 6 35 
ORO Se ae ea July 6] July 20} July 30/ Aug. 3 14 10 4 28 
Uh ee EROS RE Cea ae eee aes eee do. aU bt IPL IF SRG Uo ees al ao (Ole 15 9 4 28 
Go mk I ee July 8] July 17] Aug. 1] Aug. 10 9 15 9 33 
Petre ee eee eee Le of do--2 =|) July £9) | Anes 2 1 dose 11 14 8 33 
12.08.18 Se cee ee eee ee do....| July 20] Aug. 3-| Aug. 8 12 14 5 31 
LST LS Se ee 2 Seer en (ee do2---|pJuly +21 |) Aug. 1)) Auge 10 13 ll 9 33 
UCL eS ine eae ee doze=-|b--d0e---|) Aug “3 Anes 2 13 13 9 35 
WN ie SR Sees oe ee do...-.| July 22} Aug. 2] Aug. 10 14 11 8 33 
Jileach a2 5Se seen eeeee ee ae eee does. aibo.do= Aug. 3] Aug. 14 14 12 11 37 
Oo ain Se eet Oe ae ee GOsassessdone sdoes 32) Ange. 16 14 12 13 39 
i Se leases tee ee July 13 | July 23 | Aug. 8 | Aug. 13 10 16 5 31 
Lee oo ei ee ee a --do....| July 24 | Aug. 9 | Aug. 15 11 16 6 33 
7 | Aug. 16 inl 14 9 34 
8 | Aug. 17 11 15 9 35 
See | cates lS: 11 15 7 33 
a2 |) Aue: 16 11 15 8 34 
ORieedore- = 11 16 if 34 
if |sae Ore ll 14 9 34 
aed [eae Ore 11 14 9 34 
Eee eee Olserye 11 14 9 34 
8 | Aug. 15 11 15 7 33 
...| Aug. 16 11 15 8 34 
9 | Aug. 17 11 16 8 35 
SU lea dore-=z 11 15 9 35 
aeaie Gone Se 11 15 9 35 
4| Aug. 15 11 11 11 33 
8 | Aug. 16 1 15 8 34 
RoaeleAnie. CL 12 14 9 35 
9 |} Aug. 18 12 a) 9 36 
wee GORE 12 15 9 36 
234 Noe TG 12 15 8 35 
ee eae Osea 12 15 8 35 
...| Aug. 16 12 15 7 34 
8 | Aug. 12 12 14 4 30 
re Atos alia, 12 14 & 31 
..-| Aug. 18 12 14 10 36 
=.) Aue. di4 12 14 6 32 
9] Ang. 16 12 15 7 34 
See eae. 4 12 NG} 5 32 
10 | Aug. 15 12 16 1) 33 
ase |- Auge: #18 12 16 8 36 
9 | Aug. 12 12 15 3 30 
os oes hbtor aly 12 15 8 35 
8 | Aug. 18 7 19 10 36 
9 | Aug. 12 13 14 3 30 
10 | Aug. 18 13 15 8 36 
4 === || Aus, 13 13 15 3 31 
G}tj 2 Ss os A ee Oe - le do....| Aug. 1] Aug. 16] Aug. 23 19 15 7 41 
Fikret SSN oe 5 July 20 | July 30} Aug. 15} Aug. 22 10 16 7 33 
il on Soe ae ee BGO ssa eae GOe ns |e do..--.| Aug. 23 10 16 8 34 
tah. Les) MESSE Se eee eee -do =00'...- 5) Aug., 14. Aug. 22 10 15 8 33 
Hils oe... eae eee Bows =0o. 252) Aner 25) |eAus. 23 10 16 8 34 
esas One Oe eae dors sali do.).-|2_-00-= Aug. 21 10 16 6 32 
OLE Sop cade eS ee ne lee do. Aug: 1 |:-:do2.2 = |)Aug. 623 12 14 8 34 
(ee So ANS Bee SORA eee eee Per G0esaste: dons ssi do. badd Ores 12 14 8 34 
(Sh. it Ee Ee BS eel do Bp (o\eegere| Pe ACs Fore al SS does. 12 14 8 34 
(il cae ae ae Se do Aug. 2] Aug. 14} Aug. 20 13 12 6 31 
UNL Soper July 25} Aug. 3] Aug. 17 | Aug. 23 9 14 6 29 
(SRS: ns Se ee eee Pe do)... -.|-4 lO. Satz (bee dox.-.| Aug. 22 9 14 Fi 28 
|e icici bo Se oe = eee eae do. Aug. 4] Aug. 18} Aug. 23 10 14 5 29 
oe oe CO EEE Oe ae lees do Aug. <7); 22d0eeeale dos. = - 13 11 5 29 
SRipget fas Des eer res ns ne ieee 818 960 485 2, 263 
AM erar et Oral anGiviGUAl soo - + <<.0 sin so-5-< bn tse sen sce so 12.03 | 14.12 7.10 33. 28 
