520 The University Science Bulletin. 



Twenty adults were placed in a glass jar containing sterilized leaves 

 and twigs and covered by cheese cloth. The jar was then placed 

 outdoors, surrounded by ice except for a small breathing space at 

 the top and kept in this condition for eight days. After a few days 

 the adults became very sluggish, scarcely moving when disturbed 

 except for a slight motion of the legs. When the eight days had 

 elapsed they were brought into a warm room and placed in a cage in 

 which green plants were growing. Nine out of twenty insects sur- 

 vived, but no oviposition occurred. Although not fulfilling its orig- 

 inal purpose, the experiment seemed to show that the adults probably 

 overwinter. On December 23 Mr. Beamer collected a female of this 

 species while sifting leaves in Cherokee county. Four overwintering 

 females were taken on April 18 and 19 of this year. The exact place 

 of hibernation is difficult to determine. To date no adults have been 

 obtained from the outside cage. They probably overwinter deep 

 down under the leaves and matted grass in the cracks and crevices 

 of the ground.* 



CLIMATOLOGICAL DATA. 



As was stated in the foregoing paragraphs, overwintering females 

 were taken on April 1 and April 4 in the spring of 1922, and per- 

 haps others could have been obtained earlier, while in 1923 the 

 first ones were taken on April 19, making a total difference of 

 seventeen days. This great variation can easily be explained by 

 the difference in temperature of the two years. A comparison of 

 the two springs is given in the following table: 



Mean Departure. Lowest Highest Greatest 



19S2. for month, from normal. temperature. temperature, daily range. 



February 34.2° +1.47 2° on 13th 75° on 21st 39o 



March 44.5° +1.4 10° on 1st 78° on 23d 36° 



April 56.3° +1.7 31° on 1st 82° on 6th 38° 



ms. 



February 30.3° — 0.54 —2° 61° 38° 



March 40.74° —2.03 ^1° 80° 44° 



From a study of the table it is readily seen that the spring of 

 1922 was above normal, while this spring is below normal, which 

 accounts for the great difference in the dates of spring emergence. 



SEASONAL history AND SUMMARY OF LIFE HISTORY. 



A brief seasonal history and summary of life history is as fol- 

 lows: The insect spends the greater part of the year in the adult 

 form, covering a period of about ten months, and the other two 

 months are spent in the egg and nymphal stages. Mating takes 

 place in the fall; the females overwinter, emerging in the spring 

 along in April. A few days after emergence the eggs are laid. 



