94 



The following full descriptions of the stages at hand include and are 

 supplementary to the few diagnostic characters given in connection 



with our first announce- 

 ment. They should ')e 

 compared with the full 

 descriptions of I. pur- 

 dm Sim the reportof the 

 Entomologist, Annual 

 Eeport U. S. Depart- 

 ment of Agriculture for 

 1886, ].p. 475-481. 



Icerya rosae Riley and 

 Howard. 



The egg ( Fig. 7, &).— The 

 egg is ovoid, smooth, yel- 

 lowish-red iu color, and 

 O.fi"'"' in length. 



Newly-hatched larva 

 (Fig. 7, a). — General coior, 

 dull red; eyes, antennse, 

 legs, and hairs dark brown, 

 nearly black, becoming 

 gradually muchlighter after 

 prolonged immersion in bul - 

 sam ; apex or cornea of the 

 eyes, dark red. Eyes large, 

 projecting, conical. Auten- 

 Uie, .six-jointed ; joint 1 verj- 

 stout, narrjwest at tip, in- 

 ner side very convex ; joints 

 2, 3, and 4 subequal in 

 length; joint 5 shorter, all 

 subcylindrical; joint 6 club- 

 shaped, a little longer than 

 ;{ and 4 together; joints 1 

 to 5 each bear a pair of 

 long, fine hairs, becoming successively longer and stouter ; joiut 6 bears six very long, 

 stout hairs, each longer than the entire antenna, and each arising from a distinct 

 tubercle, and about six shorter hairs, one cr two of which are sometimes quite long. 

 Body oval, broadest across the mesothorax; sparsely covered with short black hairs, 

 more numerous and longer on the three last joints. The whole lateral margin is 

 fringed with very long hairs, each arising from a tubercle, those at margins of abdo- 

 men diflerentiated from the others bj' superior size and length and greater size of 

 tubercle. There are nine on each side of abdomen, the three anal ones precisely re- 

 sembling those found in the corresponding stage of I. purcliasi. The six anterior ones 

 have a characteristic forward arch, and their tubercles are abruptly bent forward. 

 The three anal bristles are longer than the others, but all nine seem to increase 

 slightly in length toward the end of the body, the anal ones exceeding the body in 

 length. The legs, tarsal digitules, secretory pores, and mouth parts are as in /. pur- 

 chasi. 



Fig. 



-Icerya rosce: a, newly hatched larva; 6, egg — greatly en- 

 larged (original). 



