. The insect and other allied pests of orchard, bush and hothouse fruits and their prevention and treatment . Insect pests; Fruit. 298 Insect Pests. LiFE-HlSTOllY ANU HaIUTS. The motli appears in :\Iay ; in lOOG as earl}' as the llith of j\Iayat Wye, tlie year before not nntil the 27th. in size it varies from 7 to 8 mm. iu'wing expansion. The anterior wings are pale oehreous brown, with a "snowy white basal streak, and on tlie inner margin a thin white streak much smaller than the above; towards the apex four white converging areas above and three below ; the hind wings are white with dus
. The insect and other allied pests of orchard, bush and hothouse fruits and their prevention and treatment . Insect pests; Fruit. 298 Insect Pests. LiFE-HlSTOllY ANU HaIUTS. The motli appears in :\Iay ; in lOOG as earl}' as the llith of j\Iayat Wye, tlie year before not nntil the 27th. in size it varies from 7 to 8 mm. iu'wing expansion. The anterior wings are pale oehreous brown, with a "snowy white basal streak, and on tlie inner margin a thin white streak much smaller than the above; towards the apex four white converging areas above and three below ; the hind wings are white with duskv liase, and the long fringes are grey in the female, of a dull yellowish tinge in the male. The tliorax is the same colour as the wings, with a median and lateral white stripes. The abdomen is grey, and the tuft pale oehreous. The legs are grey, with white tarsal segments spotted with fuscous. They lay their eggs on the leaf, choosing, it seems, a still, fine evening just l)efore sunset. The iar\';e then Imrrow into the leaf, and feed upmi the soft mesophyll and eat it out in a more or less rounded area, the upiper epidermis being left intact, liut quite separate from the rest of the leaf and showing qirite white (I have never seen the oehreous central area described by Staiuton). (Jccasionally. when the mine is near a mid rib or the edge of the leaf, the leaf becomes much puckered and folded. In this Ijlister tlie larva' mav lie found up to the beginning of July. When mature the larva reaches aliont 4%3 mm. in length, Tt i'; pale yellowish-green, the first three segments more yellowish, and the eighth with a somewhat obscure orange-yellow spot; the last two segments aie yellowish. The head pale brown, with dark brown markings ; when retracted the lobes show through the first segment as two brown spots. Legs very pale. This larva, when c^uite young, lies in a, cur\ed ]i(isition, but as it reaches maturity it straightens out. It can generally be seen in the mine at work by hol
Size: 2038px × 1226px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectpests, bookyear