APPLE IKSECTS. 



19 



Cossus tristls Drury. 

 (Apple and Quince Borer, Cossidse; Lepidoptera.) 



Hosts: Apple, quince, pear. 



Injury: Bores in sapwood. 



Description and biology: Adult occurs from September to November (South Africa). 

 Broods may overlap. Ptipa may be found in July and September. Larva length 50 

 mm.; wholly flesh-colored or mottled with red. Young larvae feed first beneath the 

 bark, older larvae burrow in middle wood. Eggs de- 

 posited on bark, singly or in groups; especially in the 

 fork of branches. 



Distribution: South Africa. 

 LouNSBURY, C. P. Rept. Gov. Entomologist for 1898. 



Cape of Good Hope, Gape Town, 1899. 



Blastodacna putripennella Zeller. 

 (Apple Pith Moth. Elachistidae; Lepidoptera.) 



Host: Apple. 



Injury: Not seriously destructive. 



Description and biology: Adult iorewing brownish gray 

 with golden and whitish spots and stripes, head gray; 

 eyes white; antennae, gray ringed with white. Occurs 

 in July and August (Germany). Pupates about end of 

 June between dry leaves on dead twigs. Larva yellowish, 

 with broad reddish segmental divisions; head, neck, anal 

 shield, and feet dark brown; prolegs and a side stripe 

 above the feet yellow. Hatches in autumn and feeds on 

 leaves; on approach of winter bores into buds of 1-year- 

 old twigs; in spring bores into pith of twig. Eggs are 

 placed on leaves. (See text fig. 9.) 

 SoRAUER, P. Handbuch der Pflanzenkrankheiten, 3d 



ed., 1913, vol. 3, p. 255, figs. 186, 187. 



Blastodacna vinolentclla H.-S. 



(Pith Moth. Elachistidae; Lepidoptera.) 



Host: Apple. 



Injury: Considerable injury. Larva burrows into buds, 

 shoots, and spurs. Fig. 9.— Apple pith moth (£to«io<Jac- 



Description and biology: Adult wing expanse a little "" Putripennella): Adult and in- 

 1 4.U TO -v^ ■ T. 1 + 1.1 1 juredtwig. (Sorauer.) 



less than 12 mm. Forewmgs may be almost black or 



may be marked with dark brown and rusty brown; inner margin white to beyond 



middle, where an irregular faint white oblique bar proceeds to tip of wing; two 



branches from which intersect black apical portion; hind wings gray and fringed; 



head black. Occurs in July and August. Pupa ochraceous; head, front of thorax, 



and tip of body, mahogany red; cylindrical in form; length 6 mm. Larva length 



8 mm. Dull reddish brown with deep brown head and first thoracic segment. 



Larvae hatch in late summer, feed on leaves, bore into bud, pass the winter there, and 



mature in June. Eggs are unknown. 



Distribution: England, Europe. 



Theobald, F. V. Insect Pests of Fruit. 1909, p. 92. 



