“eo 
THE GRAIN BUG. 19 
DAILY ACTIVITY. 
In calm and fair weather the nymphs of Chlorochroa sayi are 
active and feeding (see Table V) during the period from about 8 
a. m.? until the heat of the sun becomes oppressive an hour before 
noon. Then they seek the shelter of some object and remain quiet 
until the heat of the sun abates, resuming their activity and feeding 
from about 2 p. m. until the atmosphere cools in the late afternoon. 
During the night, and the cooler periods at the beginning and end 
of each day, the nymphs remain inactive and generally seek some pro- 
tected location. The same is true during periods of high winds or 
rainy weather. 
TaBLE V.—Daily activity and feeding habits of nymphs of Chlorochroa sayi, 
July 15, 1916. 
Time. Foren Weather. Observation. 
A. M. ea ae | 
63 |\cloua 
4.30 62 pesados a he RECREE 
62 SUNPISOH Sas eee 
s 5. 30 5 \clouay Aa MR a Resting 
6. 30 3 Partly cloudy......... 
7.30 73 \cloudy ccc cece eee eee 
74 
8. 30 76 
78 
in av Be ‘ | Feeding 
10.30 83 | pPai..------------- eee) 
11 86 
11. 30 87 
12 88 
INE Resting 
ae 30 a5 Partly cloudy......... 
1.30 93 \cloudy TSRSOHBSE Sdebbio6 
94 
2. 30 97 
90 
3. 30 Be @uiteicloudyease Feeding 
4,30 83 
5 82 
5. 30 80 
6 80 
6. 30 80 Pe Clondyaneee sae 
7 79 Resting. 
7. 30 UU 
76 @Quitecloudyess-eeee 
9 73 
In discussing the feeding and activity of the nymphs, it should 
be understood that in the high altitudes of northeastern New Mexico 
the nights are very cool, even during the summer months, while high 
temperatures are recorded at midday. 
The inactivity of the nymphs during certain periods, together with 
their habit of dropping to the ground and feigning death when ap- 
proached, frequently leads many unobserving owners of damaged 
1 All references to clock time refer to *“‘ Standard time.” 
