June, 1902.] New Phenacoccus on Platanus Occidentalis. 



285 



Color : Head, dark reddish-brown ; eyes, blackish ; thorax, reddish-brown 

 except dark, chitinous parts ; abdomen light-brown tinged with yellow. An- 

 tennae,, reddish-brown ; legs, brown to olivaceous with dark-brown tarsi. 

 Caudal filaments, white ; wings, semi-transparent with iridescent rose-tint in 

 strong light. Balancers, darker, slighth- chitinous on costal margin, bearing 

 one long, hooked claw which fits into a pocket in the wing. 



Although the head is very small and much reduced, and bears four reddish 

 ocelli, the thorax is very large and well developed and bears a black, shield- 

 shaped chitinous plate on the meso-scutum, from which three dark, chitinous 

 bands extend to the anterior margin of the thorax. 



The legs are long and hairy for their entire length ; the tibia bear a pair 

 of strong spines on their distal extremity ; the tarsi are armed with numerous 

 spines ; the claws are long and curved, and bear a sharp denticle on the ven- 

 tral margin, near the tip. Two knobbed digitules are present, extending 

 beyond the tip of the claw. 



EXPI,.A.NATlON OF PLATE. 



Fig. I — Adult male. Fig. 2— Balancer with hook fitting into pocket in 

 wing. Fig. 3 — Posterior tarsus of male. Fig. 4 — .\dult female. Fig. 5 — Pos- 

 terior tarsus of female. Fig. 6 — Lateral lobe of abdominal extremity of 

 female. Fig. 7a— Left antenna of female. Fig. 7ii> — Right antenna of female. 



The males were foiitid emerging from the piipa-case.s from 

 April 13 to iS, and taking wing readil)'. 



The females were found, during the winter, under loose bark 

 on the trunks and larger limbs of Platanus occidentalis on the 

 campus of Ohio State Ihiiversity at Coltimbus. Not abundant. 



A Chalcid parasite was reared from specimens collected in Feb- 

 ruary. 



The above description and drawings were submitted to Prof. 

 T. D. A. Cockerell, to whom the author is greatly indebted for 



