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NO. 2156. SUBFAMILY ALEYRODINAE—QUAINTANCE d BAKER. 337 



ALEUROCANTHUS BAMBUSAE (Peal). 



Plate 32, figs. 1-9. 



Aleurodes bambusae Peal, Journ. Asiat. Soc. Bengal, vol. 72, 1903, p. 85. 



A. hambusae is a large species, approaching in size longisjnnus. It 

 is ako found upon the same host plant which might lead one to 

 behere that the two forms are identical. The number of spines 

 given by Peal for hamhusae is, however, very different from that 

 found on longispinus. In clearing the case sufficiently for study 

 many of the spines are destroyed and their position is indicated only 

 by stubs, or even their tubercles. It is possible, therefore, that Peal 

 may have overlooked a number of them. Since, however, his speci- 

 mens were destroyed by fire, this can not now be determined, as ham- 

 husae has not been subsequently described. 

 Egg. — Length, 0.25 mm. by 0.11 mm. 



Color light bro^vn. Surface sculptured with hexagons. Attached 

 in an upright position to leaf by a short peduncle. 

 Larva, first stage. — Size, 0.35 mm. by 0.2 mm. 

 Shape elliptical, naiTOw for its length. Color, deep black; dark 

 brown under the microscope. The dorsum is completely hidden by 

 a quantity of white fluff which is produced by a series of submarginal 

 pores. There is an elevated mesio-dorsal ridge extending anteriorly 

 almost to the margin and posteriorly to the vasiform orifice. Seg- 

 ments of abdomen fairly distinct. Margin crenulated, bearing a 

 series of closely apposed pores which produce a regular but somewhat 

 short horizontal fringe. Ventrad just within the margin a series of 

 pores which produce a scanty white secretion. There are four long 

 setae on cephalic and four on caudal margins. On the dorsum there 

 are four long, stout curved spines which are situated a pair on the 

 cephahc and a pair on the anterior edge of the abdominal region. 

 They are placed on the sides of the medio dorsal ridge. The spines 

 point backwards. Each spine is about half the length of the body, 

 the anterior pair bemg slightly longer. Two short stout curved 

 spines are situated one on each side of the vasiform orifice. Vasi- 

 form orifice large, elevated on a tubercle. It is apparently similar 

 to that in the puparium but owing to the color is difficult to make 

 out. 



Larva, second stage. — Size, 0.55 mm. by 0.3 mm. 

 Similar except in size to larva, thkd stage. 

 Larva, third stage. — Size, 1 mm. by 0.55 mm. 



Shape eUiptical, somewhat broader proportionately than in the 

 first stage. Color, dense black. There is a distmct mesio dorsal 

 ridge which is somewhat shghter than in the preceding stage. Ab- 

 dominal segments distinct. Area surrounding vasiform orifice 

 36399°— Proe.N.M.vol.51— 16 -22 



