26 



MISC. PUBLICATION 6 2 6 ; U. S. DEPT.- OF AGRICULTURE 



CAMELLIA 

 Camellia Scale 



The leaves of camellia occasionally 

 become infested with the camellia scale 

 (Lepidosaphes camelliae Hoke). When 

 numerous these tiny sucking insects, 

 tightly attached to the leaf surface, 

 cause the foliage to appear sickly and 

 fall prematurely. The waxy scale 

 covering the mature insect is about 

 y 10 inch long, somewhat pear-shaped, 

 flattened, and dark brown. 



Treatment. — Spray in the spring 

 with a 2-percent white-oil emulsion 

 (p. 100), wetting both sides of the leaves. 

 Best results will be obtained by making 

 two or more applications about 3 weeks 

 apart. To avoid injury to the blossoms, 

 the spraying can be begun at the close 

 of the blooming period. The same type 

 of oil spray at twice the above strength 

 may be applied when the plants are 

 dormant, in severe or continued infesta- 

 tion. Where only a few leaves are 

 infested on small plants, the scale 

 insects may be wiped off with a soft 

 cloth. 



Tea Scale 



The tea scale (Fiorinia theae Green) 

 attacks the leaves of camellia and tea, 

 causing injury similar to that of the 

 camellia scale, discussed above. It is 

 most prevalent on the under sides of 

 the leaves. The female scales are about 

 Yiq inch long, elongate oval, and dark 

 brown to blackish. The male scales, 

 however, are snow white, and when 

 numerous they give the under sides 

 of the leaves a whitish or frosted 

 appearancs (fig. 40). 



Figure 40. — Camellia leaf covered with 

 the tea scale. About natural size. 



Treatment.- 



lia scale, above. 



-Same as for the camel- 



Other Pests of Camellia 



Page 



Citrus mealybug 31 



Long-tailed mealybug 31 



Citrus whitefly 43 



Oleander scale 54 



Soft scale 43 



Peony scale, 23 



Fuller's rose beetle 44 I 



CANNA 

 Carina Leaf Rollers 



In the Southern States canna leaves 

 are often attacked by two leaf rollers, 

 the larger canna leaf roller (Calpodes 

 ethlius (Stoll.)) and the lesser canna 

 leaf roller (Geshna cannalis (Quaint.)). 

 They should receive prompt attention. 

 Occasionally these species appear in 

 the Northern States, but the severe 

 winters seem to prevent their survival. 



The young caterpillar of the larger 

 canna leaf roller cuts a small oblong 

 strip from the leaf margin and neatly 

 folds this over the leaf surface. From 

 within this retreat it feeds on the leaf 

 margin above and below. As the 

 caterpillar grows it forms a tubular 

 retreat and eats out larger irregular 

 holes (fig. 41). The body of the cater- 

 pillar is semitransparent and greenish, 

 and the dark-orange head is set off by a 

 narrow "neck" (fig. 42). When full- 

 grown it is about 1% inches long. 

 The adult is a brownish butterfly, or 

 "skipper," with white spots on the 

 wings. 



The lesser canna leaf roller also 

 attacks canna leaves and in Florida it 

 often causes serious injury. The cater- 

 pillar rolls the leaves and feeds on the 

 inner surface of the roll. More often, 

 however, it fastens the younger leaves 

 before they have unrolled to any extent. 

 Infested leaves mav be so badlv eaten 



Figure 41. — Portion of leaf folded and 

 irregular holes eaten by the larger 

 canna leaf roller. 



