. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. EGG PARASITES OF THE GIPSY MOTH. 179 definitely proved to be primary, was the prime argument which finally resulted in the detachment of Mr. H. S. Smith from the cotton boll weevil investigations and his transfer to the laboratory staff. By the time he was prepared to undertake his new work a large number of eggs from which Anastatus, Tyndarichus, and Pachyneuron were positively known to have issued were ready for dissection and study, and to these were soon added a number from which Schedius was similarly known
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. EGG PARASITES OF THE GIPSY MOTH. 179 definitely proved to be primary, was the prime argument which finally resulted in the detachment of Mr. H. S. Smith from the cotton boll weevil investigations and his transfer to the laboratory staff. By the time he was prepared to undertake his new work a large number of eggs from which Anastatus, Tyndarichus, and Pachyneuron were positively known to have issued were ready for dissection and study, and to these were soon added a number from which Schedius was similarly known to have come, secured in the manner about to be described. The first Schedius which was ever reared in a living condition issued from an isolated egg in the laboratory in December, 1908. It was a male, and it died before it could be furnished with a mate. The next individual issued on January 8 from an egg which had been isolated on December 19. It was a female, and she was immediately transferred to a large vial containing an egg mass freshly collected from the field. Within a few days after being thus confined she was observed in the act of oviposition, and parthenogenetic reproduction ensued. Her progeny began to issue February 16, and up to February 25 no less than 28 males were reared. The experiment was tried of con- fining her with several of her asexu- ally-produced progeny in the hope that she might thus be fertilized and produce females. The experiment FlG- ^-schedius kuvanx: Egg. Greatly en- did not succeed at that time, appar- ently because she was not able to deposit any more eggs. She remained alive until March 2, but was dead on March 6, after at least eight weeks of active life. The eggs from which these parthenogenetically-produced males issued were known beyond per ad venture of a doubt to have produced Sche- dius, and never to have contained any other parasite, and together with those from which Anastatus, Tyndarichus, and Pachyneuron were known to have issue
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