File:Platygaster hiemalis embryo development (00).jpg
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DescriptionPlatygaster hiemalis embryo development (00).jpg |
PLATE I A. — Outline of egg of Hessian fly showing two groups of Platygaster eggs deposited within. X 460. B. — Preoviposited egg of Platygaster hiemalis. Note the membranous process at each end and the egg nucleus. X 2,300. C. — View within a larva of the Hessian fly, showing five Platygaster parasites in the blastula stage. X 35. D. — Host carcass containing 11 cocoons of Platygaster. X 13. E. — Parasite egg immediately after oviposition, with nucleus and sperm. Egg was deposited in the yolk and under the blastoderm of the host egg. Compare size of egg with that of blastoderm cells. X 2,200. F. — Portion of a section through a host egg cut across a group of eight parasite eggs which were deposited at one time. Five of the eight eggs show sections of the sperm. X 2,200. |
Date | |
Source | https://archive.org/details/journalofagricul25assouoft/page/n512/mode/1up?view=theater Volume XXV JULY 7-SEPTEMBER 29, 1923 |
Author |
Association of Land-Grant Colleges and Universities. Journal of agricultural research; United States Agriculture, Department of. Journal of agricultural research |
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current | 15:49, 22 March 2024 | 671 × 1,151 (764 KB) | Rasbak (talk | contribs) | {{information |description=PLATE I<br> Platygaster hiemalis<br> A. — Outline of egg of Hessian fly showing two groups of Platygaster eggs deposited within. X 460. B. — Preoviposited egg of Platygaster hiemalis. Note the membranous process at each end and the egg nucleus. X 2,300. C. — View within a larva of the Hessian fly, showing five Platygaster parasites in the blastula stage. X 35. D. — Host carcass containing 11 cocoons of Platygaster. X 13. E. — Parasite egg immediately after ovip... |
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