Table 3,--FIR peak emission (Am) from species of Noctuidae and Sphingidae and 
background laboratory temperature 








Temperature 
Species Am (c.)3 erat 
bolometer 
Noctuidae: 
Heliothis zea (Boddie) 20. 8 see See ee 9.56 30 32 
Pseudaletia unipuncta (Haworth)........... 9.59 29 31 
Sphingidae: 
Ep AS COT Pub RAS Wir foes, ete, chels lars, apaveissevavefe ekeuere 9,10 43 44 
Herseqeinpubata ni.) \csis\ele.sie.s12 eie,« Seat en 9.25 40 41 
Ky MophanesmCersarmlirvesrcichs, s.o ole ie-s lee 40-5 0 0.01 ¢).918 9.34 37 38 
Background laboratory temperature......... 9.75 i 24 -- 

1 Temperature for noctuids, as measured by probe, was usually 9° C. higher than temper- 
ature (emission) as registered on bolometer; there was 1° difference in sphingids. 
Differences were attributed to bolometer being focused at 10 inches for a 0.54 inch? field 
of view at 3° spread. At this distance and spread, noctuids filled only half and sphingids 
three-quarters of resolved area. 

max. 

max. 
Figure 9,--(Top) FIR emission from Herse cingulata (F,) (1 sec./cm., 
10mv./cm.); emission drops from peak at 9,25mu to background 
emission of 9.75 (solid line air probe) as moth is moved from in 
front of bolometer sensing head, (Bottom) Maximum radiation from 
vibrating moth is approximately 10° off "shoulder" of moth's thorax, 

165 
