464 



Journal of Agricultural Research 



Vol. VI, No. 12 



prominent, infesting the leaves of all species of Citrus on the lowland 

 plains. Honeydew is excreted in small amounts, which is followed by 

 the development of sooty fungi, but not to the extent that is true of 

 certain other white flies and scale insects. 



The present known distribution and food plants are shown in Table I. 



Tabi,E I. — Present known distribution and food plants of Aleurocanthus woglumi 



Date. 



Quaint- 

 ance 

 No. 



Locality. 



Host plant. 



Collector. 



June 16, 1910 



1910 



1910 



Oct., 1910. . . 



Do 



(?) 



Nov., igio.. . 



Do 



Do 



Do 



Dec., 1910. . . 

 June, 191 1. . . 

 Sept., 1911 . . 

 Aug., 1913... 

 Sept., I9I3.. 

 Nov., 1913. . . 

 Feb., 1914. . . 

 May, 1914. . . 



Feb., 1916... 

 Do 



5264 

 6763 

 6764 

 6750 



6744 

 6553 

 6556 

 6564 

 6557 

 6560 

 6528 

 8021 

 8012 

 8753 



8922 



12066 

 12067 



India 



Manila, P.I 



do 



Royal Bot. Gardens, Cey- 

 lon. 

 do 



India 



Lahore, India 



Gujranwala, India 



Lahore, India ' 



do 



Kalimpong, Sikkim, India. 



Lahore, India 



Nagpur. C. P., India 



Peradeniya, Ceylon 



do 



Half Way, Jamaica 



do 



Kingston, Jamaica 



Orange 



....do 



....do 



Capparis rozburghi . 



Guantanamo, Cuba 



Nassau, N. P., Bahama . 



Capparis pedunculosus . . . . 



Unknown tree 



Citrus sp 



....do 



....do 



....do 



....do 



Citrus sp. and Morus sp. . , 



(?) 



Salacia reticulata 



Kurrimia zeylanica 



Orange 



do 



Citrus sp.; Guiacum of- 

 ficinale; Cestrutn noc- 

 turnum L. 



Orange 



..do 



Maxwell- Lefroy. 

 George Compere. 



Do. 

 R. S. Woglum. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 

 A. Rutherford. 



Do. 

 Col. C. Kitchener. 



Do. 

 S. F. Ashby. 



P. Cardin. 



L. J. K. Brace. 



Egg (fig. 2, A). — Size, 0.208 mm. by 0.08 mm.; shape elliptical, curved, with the 

 stalk short and attached some distance from the base. Color yellowish, surface appar- 

 ently without reticulations in some cases and with them in others, which is no doubt 

 due to the structure being destroyed in boiling. When they are present (fig. 2, B) 

 they average 0.006 mm. in diameter. 



Larva. — Larvae are present in the material at hand, but they are in too poor a 

 condition for accurate description. They are browTi in color and armed with numerous 

 long spines. 



Pupa case (fig. 2, C). — Size variable in the different lots of material, averaging 

 1.4 by 0.89 mm.; shape regularly elliptical, with the dorsum considerably arched or 

 rounded; the median ridge high, but not markedly distinct from the dorsal area, 

 excepting near the caudal portion of the abdomen and at the vasiform orifice, which 

 is elevated into a more or less prominent tubercle. Color dense black, so much so 

 that it is almost impossible, even after prolonged boiling, to make out details. When 

 the denser dorsal portion of the case is removed the ventral part appears under the 

 microscope as dark brown and more or less irregularly mottled. Submarginal area 

 with usually 20 spines forming a ring. These vary consideably in length, but the 

 caudal pair is nearly always the longest. The spines are ctu-v^ed outward. A pair 

 of hairs is present on the caudal margin caudad of the vasiform orifice. The spines 

 on the dorsum are small excepting two pairs on the abdomen and three pairs on the 

 thorax. Their number and arrangement are shown in the figure. The vasiform 

 orifice (fig. 2, E) is prominent, being on a tubercle, but is small. It is somewhat 

 triangular in shape, tending to circular. The operculum almost entirely fills the 

 orifice obscuring the lingula — all but a very small portion at the tip. Cephalad of 

 the orifice a pair of minute setae is situated one on each side. The margin of the case 



