. Bulletin of the Department of Agriculture. Agriculture; Agriculture. A STUDY IN in PERPARAS1 I ISM 13 ited at all, and very frequently so much of the fluid content of the Apanteles is appropriated by the adult Hemiteles that only a shriv- eled mass remains, which is entirely inadequate for the nourishment of a Hemitelea larva. On one occasion a single female of this species made 47 punctures in one cocoon, but deposited only one egg. Often, however, several eggs arc placed in a single cocoon during the course of repeated insertions of the ovipositor, even when other cocoons are availabl
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. A STUDY IN in PERPARAS1 I ISM 13 ited at all, and very frequently so much of the fluid content of the Apanteles is appropriated by the adult Hemiteles that only a shriv- eled mass remains, which is entirely inadequate for the nourishment of a Hemitelea larva. On one occasion a single female of this species made 47 punctures in one cocoon, but deposited only one egg. Often, however, several eggs arc placed in a single cocoon during the course of repeated insertions of the ovipositor, even when other cocoons are available; but never does more than one larva mature in such cases. Because of their large size only a few fully developed eggs are present in the uterus at one time, and evidently more than six to eight eggs arc rarely deposited within a 24-hour period. In the laboratory the largest number of eggs obtained from one female on one day was 10, and this only on a single occasion,. Fig. 1.—Hemitelea tenellus, female following the failure of this parasite to deposit any eggs during the two days immediately preceding. Usually only from one to three eggs per day were obtained, and in the case of all the Hemiteles observed there were many days interspersed upon which no eggs were deposited. The largest total number of eggs laid by one female in the laboratory was 76, and this over a period extending from May 11 to July 1. The egg hatches after about 48 hours and the larva feeds externally upon the Apanteles within the cocoon. There are live larval stages. This was determined by carrying through individual hyperparasites, from eggs to adults, in cells on depressed slides. According to these observations, the first stage required two days, the next three stages about one day each, and the fifth stage an average of seven day-. although feeding in this stage ceased at the end of a day and a half. Thus Hemiteles became full grown after about six or seven days. Please note that these images are ex
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