. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 21 of that of the entire egg, is siibcylinclrical, being constricted in the middle, rounded more or less at the lower end, and at the ui^per abruptly cur\ing inward to meet the neck. The width of the neck on the side (dorsal) o])p()site the hinge of the cap is aljout one-sixth of the entire height of the egg, and on the ventral side about one- third as wide as on the dorsal side. On the upper margin of the neck are pure white blunt processes, numbering as a rule 22. The cap is subconical, diameter at l)ase two-th


. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 21 of that of the entire egg, is siibcylinclrical, being constricted in the middle, rounded more or less at the lower end, and at the ui^per abruptly cur\ing inward to meet the neck. The width of the neck on the side (dorsal) o])p()site the hinge of the cap is aljout one-sixth of the entire height of the egg, and on the ventral side about one- third as wide as on the dorsal side. On the upper margin of the neck are pure white blunt processes, numbering as a rule 22. The cap is subconical, diameter at l)ase two-thirds of diameter of body of egg, height one-fourth or one-fifth the diameter of base, apex rounded or somewhat flattened. The appearance of the egg is atTected by trans- lucent and opaque areas, which seem to be due to the absence and pres- ence of a coating of wax. The cap is translucent, except for the. Fig. 7.—Pcntatoma lUiata: a, adult bug; h, egg- mass on leaves; c, egg just before emer- gence of nymph ; d, egg at an earlier stage of development; e, egg from side, sliowing exit bole at top: /, egg closed, a, h, enlarged; c-f, greatly enlarged (original). edge, and the neck is translucent, except for its upper edge adjoin- ing the cap, the translucent edges of the neck and cap thus combining to make a distinct ring of pure white. The body of the egg is opaque, except for three or four small translucent areas, usually pres- ent on the side When the nymj^h is nearly ready to hatch the trans- lucent areas are quite dark. In some of the empty shells of the same batch of eggs the translucent areas remain clear, though not trans- parent, and in some they become yellowish. The entire chorion is closely and finely punctate, the punctures in the translucent parts being smaller than on the opaque parts. The eggs are deposited in compact batches in the hexagonal system, each egg, except those on the outside, being in contact with six Please note that these images are extrac


Size: 1709px × 1463px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectentomology