ALEURODICUS COCOIS. 



49 



which destroys the European Aleyrodes, and it is remarkable that no parasitic 

 insect should have appeared to checlc the increase of the Cocoa-nut species, 

 but this may arise from the disease having been imported without its usual 

 attendant antidote. Fumigating with sulphur would arrest the plague, if it 

 could be applietl ; but then it ought to be done simultaneously to be effective, 

 or else at a season when the insects are inactive. — Ruricola. 



riley's and Howard's description. 



(Figs. 7, 8, 9.) 



The egg (fig. 41, o) [fig. 8, a].— We know the egg only from specimens taken 

 from the bodies of gravid females. Length, 0.29 mm. ; greatest width, 0.11 mm. ; 

 length of pedicel, 0.0G4 mm. From these measurements it will be seen that the 



-J 



rnr»<TTTjr7j2T53cEc!D?'^ 



Fig. 7. Aleurodictis cocoix: a. Adult female; b, side view of abdomen; c, dorsal view of 



abdomen ; d, antenna ; e, head from side ; /, costa of forewing ; y, costa of hind wing ; 

 h, tarsus; i, pulvillus ; k, adult male; h claspers. (From Riley and Howard.) 



egg is broader in proportion to its length than that of Aleyrodes ciiri. The 

 pedicel, instead of arising from the base of the egg, has its origin on the side, 

 somewhat above the base, as shown at fig. 41, o. No sculpturing is observable. 



NetcUf-hatched larva, first stage (fig. 41, b) [fig. 8, &].— What we assume 

 from its size to be the first stage has been sparingly found in a more or less 

 dried up condition upon the leaves of guava received. It is 0.41 mm. long and 

 0.19 mm. wide, regularly elliptical, flattened and smooth. Twelve hairs of med- 

 ium length protrude from each side. Antenna? short, apparently five-jointed. 

 Joints subequal. Rostrum oue-jolnted, arising from a point half way between 

 the middle of the body and the anterior extremity. The dorsal anal pore is 

 distinct, and the long conical organ protrudes. 



Larva, intcrmcdiaic stage (fig. 41, d, g) [fig. 8. d, g].—\ stage intermediate 

 between the newly hatched larva and that which seems full grown has been 



