148 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 7 



A NEW COTTON SCALE FROM PANAMA 



By T. D. A. COCKERELL 



A few weeks ago Mrr E. Bethel of Denver kindly forwarded to me 

 some Coccidae collected in the Panama Canal Zone by Mr. James Zetek. 

 One of the species was seen at once to be a new Icerya; and as this genus 

 is of more than ordinary interest, both from the economic and purely 

 scientific points of view, the insect is described herewith. 



Icerya zeteki n, sp. 



On stems of an undetermined plant, having dark red color exter- 

 nally and much white pith within. 



Female. Oval, about 4| mm. long, densely covered with white cottony tufts' 

 slightly stained with yellow; an elongated central mass of white wax is surrounded by 

 a channel or depression, except anteriorly, and this is margined by a series of low 

 quadrate tufts, about seven on each side, separated from each other only by slight 

 depressions; outside of these, not separated b}' any interval, are low subquadrate tufts, 

 about 10 on each side; in front is a suberect, horn-like but truncate, waxy projection, 

 one mm. or more long; while posteriorly a similar waxy projection, but much longer 

 (up to 4 mm.) projects over the ovisac, from which it is quite free. Ovisac 3-3| mm. 

 long, very strongly fluted, white suffused with pink. No glassy filaments. Legs 

 and antenna; piceous. The measurements of legs and antenna; are in microns. 

 Anterior legs: femur with trochanter, 640; tibia 512; tarsus with claw 272. Antennae 

 11-jointed, third joint longer than broad, fourth broader than long. Joints measur- 

 ing (1.) 80 (2) 96, (3.) 104, (4.) 72, (5.) 64, (6 to 10) each 80, (11.) 160. 



Larva light raspberry color; antennae 6-jointed, the joints measuring (1 to 5) each 

 about 50, (6.) 160; last joint or club with no swelling at base; longest bristles on 

 antennae about 830 fj,; three pairs of long straight bristles on each side of caudal end, 

 the longest 1360 fx long (the body of the larva being only about 750) ; anterior to these 

 are two very long curled bristles, then three shorter curled ones, then much shorter 

 straight ones. 



Closely allied to Icerya hrasiliensis Hempel, but with the anterior 

 and posterior waxy processes shorter, and wholly without the lateral 

 posterior processes, on each side of the long one, which are so conspic- 

 uous in /. hrasiliensis. In the larva of hrasiliensis the posterior 

 curled bristles of abdomen are not longer than the anterior ones. The 

 ovisac of hrasiliensis is creamy white, not pinkish. 



ACAROLETES PSEUDOCOCCI n. sp. 



By E. P. Felt, Albanij, N. Y. 



This interesting midge was reared in 1913 by Prof. H. J. Quayle 

 from Pseudococcus citri Risso collected by him in Sicily. It is tenta- 

 tively referred to the above named genus though it seems to have no 

 very close affinities with A. tetranychi Kieff., the generic type. We are 



