. Insect pests of farm, garden and orchard . theeggs are readily recognized, the tips containing them should becut off and destroyed during the winter. The Currant-aphis * The young foliage of currants, and sometimes of gooseber-ries, is often found curled up in late spring with many bladder- * Myzus ribis Linn. Pamily Aphididoe. See V. H. Lowe, Bulletin 139,N. Y. Agr. Exp. Sta., p. 660. Another species, Rhopalosiphum ribis Linn.,is also common on currant and is described and figured by Mr. Lowe. INSECTS INJURIOUS TO CURRANT AND GOOSEBERRY 485 like galls on the leaves, inside of which are foun
. Insect pests of farm, garden and orchard . theeggs are readily recognized, the tips containing them should becut off and destroyed during the winter. The Currant-aphis * The young foliage of currants, and sometimes of gooseber-ries, is often found curled up in late spring with many bladder- * Myzus ribis Linn. Pamily Aphididoe. See V. H. Lowe, Bulletin 139,N. Y. Agr. Exp. Sta., p. 660. Another species, Rhopalosiphum ribis Linn.,is also common on currant and is described and figured by Mr. Lowe. INSECTS INJURIOUS TO CURRANT AND GOOSEBERRY 485 like galls on the leaves, inside of which are found the numerousyellowish-green plant-lice which liavo caused them. The wing-less females are about one-twelfth inch long, yellowish-greenor green, mottled with darker shades, and with bright red winged female is slighth longer, with wings expanding one-third inch. It is bright greenish-yellow, with pale olive head,thoracic lobes brown, and the abdomen is marked by several darktransverse bands and lateral spots. It is an old European. Fw. 349.—Currant foliage curleti by aphides. (After Lowe.) species and is probabl} found throughout the United States wherecurrants are grown. Life History.—The life history is practically the same as thatof several other aphides previously described and need not berehearsed in detail. The small black eggs are found on the stalksin winter and hatch just as the foliage appears. The aphidesmultiply on the foliage, causing it to curl as described, untilmidsummer, when they either migrate to some other food-plantor become greatly reduced in numbers through the attacks ofparasites and predaceous insects, which are very effective in thecontrol of this species. Mr. Lowe states that a few females maybe found on the foliage throughout the summer. In late October 486 INSECT PESTS OF FARM, GARDEN AND ORCHARD winged males appear and mate with the true females, w^hich thenlay the eggs. Control.—The aphides may be readily killed by spraj-ing wdthke
Size: 2267px × 1102px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
