CLOVER 
STEM-BORER AS AN ALFALFA 
Fic. 5.—Type of cage used in generation records of the clover stem-borer on alfalfa. 
TaBLE I1.—Duration of life cycle of the clover stem-borer in alfalfa at Tempe, Ariz. 
[Observer, Gates. ] 
| 
Eggs. Aver- 
Date |Length Dare Length| Total | age 
Cage No. of of adalt of length |mean 
Date Date |Num- pene yes fave issued. cee ore ee 
: on. g e. cle. | pera- 
laid. hatched. | ber. stage. ee 
1915. 1915. Days. 1915. Days. 1915. Days. | Days. | °F. 
AS OOH oko ADRS ee2h | Apis 6.5 1 3 May 15 40 May 24 9 52 66 
AV O0=2 sso se an A Ose ea|e sa Os-ee 1 3 aed Ore 40 May 29 14 57 66 
MA00=3s. 3.5.2 [dows |Apr 6 1 4 May 17 41 May 25 8 53 65 
OA See eee Mar. 29! Apr. 1 1 4 May 12 Al May 19 7 52 60 
FA OA Nea Mar. 30} Apr. 4 1 4 May 15 Al May 24 9 54 65 
O42 se ee Apr. 7{| Apr. 10 il 3 May 17 37 May 25 8 48 60 
W104-3. =. 22 ese Apr. 9] Apr. 12 1 3 May 15 33 Sed Orsa-s 10 46 60 
T 104-4... -. Be Or Seal eeed Olas: 1 3 May 17 35 May 28 al 58 65 
pS yee ee ee GoOese Aled Osage 1 3 May 25 43, June 2 8 54 66 
MINA Q Dee eae Geen Aug. 18 | Aug. 21 iL 3 Sept. 17 37 ~=—«| Sept. 25 8 48 70 
Wr BAe oe Se Sept. 3] Sept. 7 1 4 Octy=28 31 Oct. 18 10 45 76 
pe Qe ee ae Sept. 5 | Sept. 9 1 4 Oct. 10 31 Oct. 22 12 47 75 
(ON = ee ee eM Oze ele AAO ose 1 4 Bed OS= 31 Oct-23 13 48 75 
7A N73) Ne ee a eee Oss |e Osea 1 4 Octeeh 32 Oct. 25 14 50 75 
7 CS ee nae Sept. 6 | Sept. 11 1 5 Octs 10 30 Oct. 20 10 45 73 
eS One sees sar a Oree alae Osean 1 5 Oct. 12 32 Oct. 24 12 49 73 
1916. 1916. 1916 1916. 
TTB 9G = Mar. 12] Mar. 18 3 6 Apr. 20 34 Apr. 26 6 46 64 
TT’ 1405-2.........| Mar. 20 | Mar. 25 1 5 Apr: 24 32 May 3 9 46 72 
-Total or | 
FVM Ales as ue sae laos saeeee 20 Alien soeremors Sib) \aaonoamese 9.5 AQT le) eee 
