87 



The antennae resemble those of Anophelines 

 larvae, more, than those of Culex. The large 

 branched hair of Culex is represented by a 

 short inconspicuous simple hair (or as many as 

 three) projecting from the side of the antennae 

 (Fig. 23). 



J, 5h,.mj, 



4% 



y. C.Conctlorl'l 



Fig. 23. Antennae and Mental Plates of Larvae 



The syphon tube is characteristic, being very 

 short and stout (Fig. 22), only twice as long as 

 broad, whereas in Culex the syphon tube is four 

 or more times as long as broad (Fig. 22). 



I. Examine domestic utensils, disused water 

 pots, and tins containing water. Examine the 

 water which collects in the axils of the banana 

 leaves, collections of water in tree-stumps in the 

 jungle. If larvae are present — 



(i) Note the very short and broad spiracle 

 tube and its dark colour. Compare with that of 

 Culex and Taeniorhynchus. 



