130 
THE PEKIODU'AL CICADA. 
HEMiFfERors Enemies. 
A few predaceoiis Ilemiptera were found associated A^th Cicada 
esfsrs under such circumstances as to leave little doubt but that thev 
were subsisting on them. Among these were two species of Thrips, 
which were found both in the larval and adult stages in several 
instances about the e^^s on 
^ which they had been feeding. 
The material that has been 
preserved of these Thrips is 
not now in condition to be 
worked up. Both species are 
probably undescribed. 
Hymexopterous Enemies. 
The hymenopterous ene- 
^ ^^^ mies of the Cicada comprise 
FlG.53.-Eggparasite,ia^ftro;»em«cad^.- a, female; ^ HUmber of egg parasitCS, 
b, abdomen of male; c, antemia of male; d, antenna of which are the more important 
female. All greatlv enlarged (original.) • • t 'j.- xu 
^ ' s V 6 ^ agencies m Imiitmg the num- 
bers of the insect, and the large digger wasp already mentioned. 
The fact that the eggs and the newly hatched larvse are much sought 
after by various species of ants was early commented upon, Doctor 
Potter stating that they are constanth^ infested by legions of ants, 
both before and aft&r they are 
hatched. He sa^^s: 
Even the little red species, the most 
diminutive of the race, will shoulder the 
eggs and the young and bear them off 
to their cells. In all our researches we 
found them in battalions systematically 
arrayed for wholesale plunder and de- 
vastation. 
Doctor Smith corroborates 
Professor Potter, stating that he 
has himself observed a small red 
ant, scarcely as large as its in- 
tended victim (a 3^oung Cicada 
larva), seize the latter, shoulder 
it, and start off at a great speed. 
Fig. f)-!.— Female Sphecius carrying a Cicada to her 
l)urrow. Natural size (after Riley). 
THE PARASITES OF THE EGGS. 
Several egg parasites were reared from the eggs of the Cicada, but 
with one exception were not abundant in the course of extensive 
Single individuals were secured of a mymarid, a tricho- 
breedings. 
