332 
Psyche 
[Vol. 87 
to 
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o 
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6.0 6.25 6.5 6.75 7.0 725 7.5 
PRONOTAL WIDTH (mm) 
Figure 4. The average number of parasitoid eggs upon males as a function of male 
size, pronotal width. 
Several observations made during the collections in Cordele 
revealed that non-mating females were attracted to mating males 
from distances as great as 30 cm. Since the vegetation was dense, 
this suggests that males continued to emit their pheromone while 
mating. 
Forty-four females not mating at the time of collection had 
parasitoid eggs upon them. Thirty-one of these females laid 
fertilized eggs in the laboratory, while only 13 did not. Twenty-seven 
females not mating at the time of collection had no parasitoid eggs 
upon them. Only 1 of these females laid fertilized eggs in the 
laboratory. Thus, a much greater proportion of wild caught females 
laying eggs in the laboratory had been parasitized than had not (P < 
.001; t-test for proportions), indicating that mating exposed females 
to the risk of parasitoidization. 
Discussion 
Mating experiments employing yellow and green morphs suggest 
that long duration of copulation of virgin females enhances male 
