A NEW GENUS AND SPECIES OF ALEYRODIDZ FROM 
BRITISH GUIANA. 
A. L. QUAINTANCE and A. C. BAKER, 
Bureau of Entomology. 
We have recently received from Mr. G. E. Bodkin, Govern- 
ment Biologist of the Science and Agricultural Department, 
British Guiana, specimens of an interesting white fly, found 
by him March 2, 1915, on leaves of Erythrina glauca Wild., at 
the Rose Hall plantation, Berbice. 
The insect is most closely related to species of Dialeurodicus 
(subfam. Aleurodicine) and differs in the pupa case from 
these principally in the presence of reduced -compound wax 
pores, and in the character of the vasiform orifice. The 
genus appears to fall between Dialeurodicus and Aleurodicus. 
Genus Eudialeurodicus, n. gen. 
Forewing similar to that of Dialeurodicus with radius, radial sector 
and media retained. Vertex rounded; frons produced beyond the 
vertex; antenneze of seven segments. Paronychium a stout spine. 
' Pupa case flat, resembling Dialeurodicus, but with one or more pairs 
of reduced compound wax pores. Vasiform orifice small, the lingula 
included and broadly rounded. 
Type bodkini Quaintance and Baker. 
Eudialeurodicus bodkini n. sp. 
Egg—(Plate XXVI, Fig. 16), Elongate, yellowish in color, size 
0.4 x 0.11 mm. Shell without markings; stalk short, attached at one 
side of basal end. 
Pupa case—(Plate XXVI, Figs 1 and 6), On the leaf the insects 
are located principally along the midrib and larger veins. The case is 
more or less hid by the copious secretion of glassy, whitish wax, occurring 
in two concentric rings or bands. From the margin of case all around is 
produced a fringe of closely placed threads of wax which basally has 
the form of a solid more or less vertical ring, and which persists on the 
leaf after removal of case. Just within this ring is usually a circle of 
polygonal areas which may also be present over the entire area which 
had been covered by the ventral surface of the case. Another secretion 
originates from the submarginal area of the dorsum in the form of a 
band or ring of amorphous white wax. This is variable in extent and 
in some individuals becomes a plate covering the body, the periphery 
being irregular, while the more central area is concave. Leaves fre- 
quented by the adults show powdery white wax. 
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