59 



are quite devoid of scales. The absence of scales 

 upon the veins of the wings at once distinguishes 

 these from true mosquitoes (Fig. lo). 



Enormous numbers of Chironomidae arefound 

 near water, especially sedgy rivers and swamps. 

 They are attracted by light, and are constantly 

 seen around lamps and candles, a position in 

 which true mosquitoes are scarcely ever found. 



Fig. II. Trichocera. 



2. Tipulidae (Daddy long-legs). — Some small 

 Tipulidae often possess a considerable superficial 

 resemblance to mosquitoes, as, for example, the 

 winter gnat (Trichocera). When at rest their 

 bodies lie parallel with the surface, and upon it. 

 They have no distinct proboscis (Fig. ii). 



3. Cecidomyidae, or gall midges.^These have 

 a simple wing venation, and there are no forked 

 cells. In most species the wings and bodies are 

 hairy, not scaled. 



4. Rhyphidae. — Wings have a discal cell 

 (below the anterior cross vein). They may have 

 spotted wings. 



5. Simulidae, or sand-flies (sometimes also 

 called midges). — These are minute flies which 

 suck blood voraciously. They have a short and 



