RHYNCHOTA. 



499 



A.PHIDID 1 



^PHIS GOSS\ I'll, Glov. 

 Aphis gossypii, Glover, I'. it. Off. Rept., p. 02 (1854); Essig, Calif 

 Monthly Bull.. I. 120 122, 1. 41 (Mar. 1912). 



\-w-/ 



Aphis gossypii, winged and wing The small I 



inside the dotted 0\ d show the natural size . 1 Vft< 1 I 



Distribution. Throughout Southern India. 



Lifehistory. — Eggs very dark-red or brown. Nymphs green or 

 brownish. The females as a rule produce living young, and not 

 eggs, and these young are usually females which are themselves 

 aide to reproduce living young .1 Iter about three days, no males being 

 produced at all tor a considerable number of generations. In small 

 3 the members are usually wingless, but, as the colonv 

 grows, winged forms are produced which fly off to found new 

 colonies on other plants. The increase may thus be very rapid. 

 The insi I a sweet liquid 1 honey dew) from the anus and 



this is very attractive to ants which tend and defend the Aphids ; 

 the honey dew also tails on the leaves and fii\es them a character- 

 istic sticky appearani e, usually rendered more conspicuous in damp 

 weather by the growth of fungus on the honey dew. 



Foodplants. Cotton. Polyphagous; has been found on over 

 fifty different plants in America. 



Control. Spraying with 1 onta< t inse< tii ides. 



Remarks. 'D Usually kept in cheek by various predaceous 

 insects (Clirysopa, Coccinncllids, Syrphids, . ' 



2 Numerous other species ol Aphids are found on various 

 plants but the different species have not been identified as yet. 

 J2-A 



