; ' 





370/ Annals Entomological Society of America [Vol. XII, 



wintering eggs are then 'deposited. The nymphs feed on the 

 lower leaf surfaces and seem to prefer the shaded portions of the 

 tree. The adults are very active, move readily when the 

 leaves are disturbed and when numerous their activity results 

 in sounds like rain falling on the leaves. 



Egg — Length 0.9 mm. Greatest width 0.18 mm. Translucent, 

 subelliptical, somewhat flattened and not quite cylindrical, tapering 

 slightly to both ends, one end rounded, the other end, at the surface of 

 the tissue, truncate. 



First Nymph.^l St.\ge — Length, including anal processes, 1.1 mm. 

 Width of head, including eyes, 0.29 mm. Elongate-elliptical; very 

 light yellowish white ; beginning just behind the eyes there is a reddish- 

 brown, lateral margin varying in width and extending dorsally on 

 prothorax, posterior margin of thorax and anterior margin of abdomen 

 and on some of posterior abdominal segments (interrupted in some 

 specimens) ; antennae slightly longer than body; head extending forward, 

 triangular, obtusely angled in front, sides slightly rounded; eyes lateral, 

 prominent ; insect widest across eyes ; sides of body slightly rounded and 

 tapering to posterior end of abdomen ; posterior end of abdomen divided 

 into two minute, spine-like processes; abdominal lateral row of hairs 

 similar to row on second stage; (dorsal hairs not apparent); rostrum 

 extending to beyond bases of second pair of legs; indications of spines 

 on tibia. 



Second Nymphal Stage — Length, including anal processes, 1.85 

 mm. Width of head, including eyes, 0.3(3 mm. Shape narrow, more 

 elongate than that of first stage. . Color varies from sordid white to 

 light yellow. Lateral reddish-brown margin somewhat similar to that 

 of first stage, but varying and somewhat broader. Antennae three- 

 fourths length of body. Head similar to that of first stage; sides of 

 thoracic segments rounded; metathorax slightly longer than lengths of 

 pro- and mesothorax combined; broadest across metathorax; abdomen 

 slightly narrow at base, widening to second abdominal segment and 

 gradually tapering to posterior part; spine-like processes one and one- 

 half times as long as last abdominal segment and bearing several hairs; 

 each abdominal segment bears two dorsal and two subdorsal and in 

 addition the last three segments two lateral hairs; rostrum extending 

 to between bases of second pair of legs; two rows of hair-like spines 

 on outer margins of hind tibia. 



Third Nymphal Stage — Length, including anal processes, 2.9 mm. 

 Width of head, including eyes, 0.44 mm. Somewhat similar to pre- 

 ceding stage; eyes more prominent; lateral reddi.sh-brown markings 

 more extended, in some specimens much extended on dorsal surface 

 leaving a dorsal, median band of ground color of varying width (mark- 

 ings vary considerably in different individuals) ; anterior margin of head 

 slightly more angulate; posterior margin of prothorax arcuate, outer 

 posterior angles margined; mesothorax twice as long at sides as at middle ; 

 metathorax twice as long as pro- and mesothorax combined, posterior 



