. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. THE CHEERY FRUIT SAWFLY. 75 for the Bureau of Entomology, kept a close watch for the first appear- ance of the adults of this species. On March 10, 1910, he found three female sawfiies (see fig. 23, d) in cages planted under trees in the orchard and used for the emergence records of the pear thrips. Four more adults were caught in the cages on March 12, and two dead ones were found outside of the cages. These had evidently- been killed by the spraying for thrips the previous morning. The first males were found Ma
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. THE CHEERY FRUIT SAWFLY. 75 for the Bureau of Entomology, kept a close watch for the first appear- ance of the adults of this species. On March 10, 1910, he found three female sawfiies (see fig. 23, d) in cages planted under trees in the orchard and used for the emergence records of the pear thrips. Four more adults were caught in the cages on March 12, and two dead ones were found outside of the cages. These had evidently- been killed by the spraying for thrips the previous morning. The first males were found March 16 and after this date both sexes were quite numerous for some two weeks or more. The Black Tartarian cherries were just beginning to bloom at this time. The writer spent considerable time in the Suisun section at this period, making a further study of the life history and habits of the. Fig. 23.—Stages and work of the cherry fruit sawfly (Hoplocampa cooker): a, Egg; b, position of egg in cherry blossom; c, larva; d, adult sawfly; e, saw of ovipositor; /, serrations on ovipositor; g, sheath of saw; h, head of adult sawfly; i, infested cherries. (Original.) insect. By March 20 adults of both sexes were plentiful, but the females far outnumbered the males. As many as 40 individuals were observed in one tree, two-thirds to three-fourths of which were females. The adults were very sluggish in the early mornings and could be picked up with little or no difficulty. Toward noon, as the atmosphere grew warmer, they became more active, but even then many individuals could be caught in the trees. The adults may be found resting on the leaves, leaf stems, blossoms, both outside and inside, and on the twigs. A few were observed feeding on the nec<;ir of the more advanced flowers. In confinement the adults fed quite freely upon sirup and Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration an
Size: 1927px × 1297px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectentomology