. The book of bugs. 8o The Book of Bugs.. Fig. 15. The stem- forth living young, all females, and continues during her life-time to add to her family from two to eight daily. These in turn become mothers when eight days old. The stem-mother may live to see her great-great-granddaughters. By the time the third generation appears the hop-vines are up. They • must get at them, so this third genera- tion of virgin-born females, cleverly enough, comes out in wings and takes flight to the new field of opera- tions. There they jab their beaks mother of the hop-plant into the plants and suck the juice

- Image ID: RHDA2G
. The book of bugs. 8o The Book of Bugs.. Fig. 15. The stem- forth living young, all females, and continues during her life-time to add to her family from two to eight daily. These in turn become mothers when eight days old. The stem-mother may live to see her great-great-granddaughters. By the time the third generation appears the hop-vines are up. They • must get at them, so this third genera- tion of virgin-born females, cleverly enough, comes out in wings and takes flight to the new field of opera- tions. There they jab their beaks mother of the hop-plant into the plants and suck the juice
Library Book Collection / Alamy Stock Photo
Image ID: RHDA2G
. The book of bugs. 8o The Book of Bugs.. Fig. 15. The stem- forth living young, all females, and continues during her life-time to add to her family from two to eight daily. These in turn become mothers when eight days old. The stem-mother may live to see her great-great-granddaughters. By the time the third generation appears the hop-vines are up. They • must get at them, so this third genera- tion of virgin-born females, cleverly enough, comes out in wings and takes flight to the new field of opera- tions. There they jab their beaks mother of the hop-plant into the plants and suck the juices louse; enlarged antenna , • 11 -r- above automatically. J±very once in so often, as if actuated by a common impulse, they tilt themselves up on their noses and dis- charge a shower of sweet liquid ' from glands in their abdomens. Ants are very fond of this liquor. By the time hop-picking is well under way, wings that had been as out-of-date as puffed sleeves are with us, come in again and are all the rage. It is about time to get back to the plum tree. Later in the season there is a genera- tion exclusively of males. They set the sponge, so to speak, of next year's baking and perish. I am reminded in this connection of the famous saying of Michelet that so wise is the governance of this world that the most destructive insects are those most relished by birds. This sounds a good deal as if he had had to say it in order to hold his job in some small denomina- tional college, where the professor of geology has to keep his mouth shut about the doctrine of evolution. It would be ever so nice if it \vere only true, but I never heard that the French birds got very fat eating the phylloxera, or if they did they could not keep up with. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Sutherland, Harvey. New Yor