Table 5.--Analysis of variance of hatching dates for 4 grasshopper species 
Source of Degrees Sum of Mean F F value 
variation freedom squares square valueL 1/ [5 percent | 1 percent 
| Melanoplus sanguinipes (early hatching) | 
Total -------- Ra | ees 
-= \ -- | -- t oe 
‘ | 
Temperature | | | | 
regression-- | 4 ele 4055 3607.25 MBS 2 | ate) | 4.43 
Deviation from | | | 
regression--{ 20 633 {| 31. OSia -- | -- -- 
H { i 
Metanoprus sanguinipes (late hatching) 
Total -------- 30 f 5,380) | -- == = -- 
Temperature | | | | 
Fegression--| 4 | 35212 | 803.0 |) 9.628) 2°74 seem aaens 
Deviation from | | 
regression--| 26 he Palle | 83.4 } -- | -- -- 
; 
Melanoplus bivittatus 
Total -------- eS 6 epeNO 5 O 1 aaa -- -- -- 
Temperature z 
regression--. 4 6,597 11,649 | 36.64%* | 2.65 3.93 
Deviation from; | : 
regression--: 34 pai 5 90) i E45 os -- -- 
| 
. Melanoplus differentialis | 
Total -------- sade a 12875) ean eS | -- -- 
Temperature t : : 
regression--{| 4  , 2,192 | 548 1 1826%40 7) 2580 en ae 26 
Deviation from} | i | 
regression--! 23 ; 6835 47) 30 25 ator -- 
Melanoplus femurrubrum | ‘ 
Total --------' 37 65375 -- == | -- -- 
Temperature i : 
regression--) 4 4289) 1072 PS yeOilkas 207) 3.97 
Deviation from| 
regression--; 33 2,086 | 63 =< -- -- 
| 
a] et l-percent level of significance. 
Sele 
