INSECT NOTES FOR 1912. 443 



extremity. The margin of the body has several groups of short spines. 

 Antennae 9 jointe'd, measuring in microns. 



"Joints I. 2. 3. 4. 5. 6. 7. 8. 9. 

 44. 44. 44. 30. 40. 32. 32. 28. 64. 

 44- 44- 44- 32. 44- 32. 28. 28. 64. 



Joint 9 is longest, 3 and 5 equal, 6 and 8 usually equal, I and 2 and 3 

 are equal and longer than any of the next five joints. The last sending 

 in the fall, when the leaves were found on the ground, had well 

 advanced females with their abdomen well filled with eggs, and when 

 cleared with potash they showed only an 8 jointed antenna as follows : 



"Joints (i) 40. (2) 60. (3) 48. (4) 72. (5) 40. (6) 40. (?) 28. (8) 60. 

 Middle leg, coxa 120, femur and trochanter 240, tibia 200, tarsus 80. 

 The legs are somewhat slender, and the claws are thin, sharp, thickened 

 at the back, but not toothed as described by Prof. Comstock." (King 

 1902). 



Life history. The adult females occur on the leaves in sum- 

 mer, and are about 1-4 inch in length. The adults are concealed 

 by an oval mass of powdery wax within which is the yellowish 

 female and her eggs. The young usually remain on the leaf to 

 feed. The males form oval cocoons under the bark of the tree. 

 The adult females leave the leaves and wander about upon limbs 

 or trunk and after pairing settle on the underside of the leaf, 

 seldom crowding each other. The waxy secretion soon becomes 

 very dense and eggs, which are very numerous, are pushed into 

 it. In some states there may be 3 generations each year. The 

 last generation passes the winter on the trunk. 



During the early summer of 1912 a number of the maples 

 on the Campus of the University of Maine were found to have 

 on the trunks under the rough bark large numbers of the wax 

 covered gravid females, the young later appearing on the leaves. 



This insect has a wide distribution having been recorded in 

 many of the northern states east of the Mississippi river. Its 

 host plants are maple, hornbeam, lime, and horse chestnut. 



Remedies. Controlled by the same methods as the Oyster 

 shell scale. 



Phenacoccus dearnessi. 



King, Canadian Entomologist, XXXIII, p. 180, 1901. 



"Sac white, the sac wholly covering the body. $ dark red-brown. 



Boiled in caustic potash the derm is colourless. Legs and mouth-parts 



ochreous. Antennae pale yellow, 9-jointed; 3 longest, although 2 + 3 



are sometimes equal, 9 next and a little longer than I, 5 + 8 next and 



