2.6 W. Dwight Pierce 



cells of these, fifteen larvae were collected, all of them consider- 

 ably shortened and broader than those taken from the flowers. 



A list of the dwellers in the Epinomia community will be found 

 in Part III. 



Additional data concerning the host consist in the finding of 

 males in swarms at the holes on August 23, 1903, and August 

 25, 1901, and in the finding on the. former date portions of the 

 males in the casts of the holes and about the holes, where they 

 had been caught by tiger beetles. 



RESULTS AND FINDINGS 



The results of these inquiries are embodied below : 



I. Oviposition takes place in the spring. All observations in- 

 dicate this. The eggs are laid in the green buds of the goldenrod. 

 The female probably dies soon afterward. 



II. The triunguloid soon hatches and when the bud opens 

 climbs to a prominent place, where it erects itself by the caudal 

 sucker and patiently awaits the advent of a" host. It probably 

 takes nourishment first from the Solidago. My reasons are : 



1. There is a great increase in size between the minute egg 

 and the triunguloids. 



.2. If vegetable food were not necessary it would be strange 

 for the adult to lay its eggs on a plant which the host does not 

 visit. The egg would either be laid on Helianthus (no Myodites 

 was ever taken from Helianthus), or the female would lay them 

 in the vicinity of or in the holes of the hosts. 



III. The triunguloid attaches itself to any host whatever which 

 is provided with hairs, and in fact shows no preference to any 

 particular portion of the host's body. 



IV. Many triunguloids perish. The bees, Ash mead iella, never 

 approach the holes. The probability is that many such cases 

 would be found by close study. One larva was found dead on 

 goldenrod probably due to inability to cling to a host. 



V. Vast numbers of larvae reach Epinomia holes. Eight of 

 the nine found on bees were on visitors or residents of the Epi- 

 nomia community. A much greater number were found on 

 Myodites females. These females undoubtedly hibernate in the 



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