59 
wings and body, and a 
(Fig. 17). The larvae are 
in air. 
Fig. 17. Sand Fly {left). 
short powerful proboscis 
aquatic but can also exist 
Ozcl Midge {right) 
Life History of the Mosquito 
In common with all other insects shewing 
complete metamorphosis, the mosquito passes through 
four stages :— 
The egg. 
The larva. 
The nymph. 
The imago. 
The Imago .—The imago is the well-known 
winged insect. The emergence of the imago may be 
seen on the surface of almost any collection of foul 
water. For some considerable time after hatching 
(twenty-four hours) the insects refuse to feed. 
In the imago there are marked differences between 
the male and the female insect. 
The Male .—In the male the antennae are 
markedly plumose. The palps also are long and hairy. 
The effect is to make the c head ’ of the male mosquito 
very conspicuous (Fig. 18). 
The male mosquito does not feed upon blood, and 
the proboscis is only used to suck vegetable juices. 
