1914] Longevity of Insects aAl 
Table 2. Longevity by Orders. 











Temperature 
Number of | High 72° F. ||Medium 62°F.|| Low 42° F. 
Order | 
Specimens Longevity in Days. 
Max|Ave.}Min.)|Max Ave.|Min | Max|Ave. |Min. 
eee a ae ia he lhigy heo.5| To \lOe | 4 hd 
Coleoptera.........| 64 15 6.6} 1 || 23 6.5) 2 || 39 | 20.0) 5 
Hymenoptera......| 50 15 5 1 i AnD a 20 styan eal OS rs 
Hemiptera..........| 24 6 25a ho 5 1 || abs: OCI) all 
Orthoptera: .. 2.5%. a 1 1 1 i Oviteo 7 6.3] 5 
Lepidoptera........ 3 7 aha ae tee ie prec tee toca Pee ONE | pr a [ 9 
Aphaniptera....... 3 cd ee ae: hal Re alia eal lene 
Thysanoptera...... 3 1 RYE beet 15 | escalate | caer 
Wetiroptera....55 2. : 2 SARE a eae | ae oe ane ea eee fe LL teen lect 
MSEC Ac, «s)he ss 359 15 4.8) 1 || 23 i re da | 
Wrnehnida 2s... 5. 26 15 SO eae ie (Ft 1b Ds S| 8.8| 3 










In most cases the data are too few to be very significant as 
to individual groups but are sufficient to draw certain conclu- 
sions, Viz: 
1. That as regards longevity, the taxonomic divisions 
show little or no comparable variability. That is to say that 
the amount of variation in an individual species may be as 
great as the variability of the genus or family or even order 
making it appear that the average longevity of a large number 
of insects of one species would give the same results as the aver- 
age of the same number of many species. 
