HOUSEHOLD INSECTS 159 



dally back porch ; use tanglefoot paper and formal- 

 dehyde, 2 tablespoonfuls in a pmt of water; use 

 fresh Buhach. 



Mosquitoes (Ciilcx and Anopheles) 

 Order — Diptera. Manual, p. 437 



All mosquitoes lay their eggs on or in water or 

 where water will eventually be; the common house 

 mosquito deposits its eggs in boat-shaped masses on 

 water where they hatch in 24 hours; the 'Sviggle- 

 tails" attain their growth in 6 to 10 days and then 

 transform to active pup?e; the pupal stage lasts 4 

 to 6 days; the life cycle may be passed in two weeks 

 in hot weather. 



The malarial mosquito. Anopheles quadrimaeida- 

 tiis, lays its eggs singly on top of the water; they 

 hatch in 3 days and the larv?e lie in a horizontal po- 

 sition just beneath the surface film for about 16 

 days ; the life cycle lasts about 24 days. 



There are four mosquitoes in the United States 

 that carry malaria and they all belong to the genus, 

 Anopheles. 



There is also one that carries the causative or- 

 ganism of yellow fever ; it is found in all of the Gulf 

 States and may occur along the Atlantic Coast as 

 far north as New York City; the species is com- 

 monly known as Stegomyia fasciata but is now 

 placed under the name Acdes argentens. 



Control — Use oil on water; drain all pools of 

 water; put fish in ponds that cannot be drained or 

 oiled; screen houses; kill adults with Buhach; use 

 bednets. 



Ants (several species) 

 Order — Hymenoptera. Manual, p. 633 

 The little red ant, the black carpenter ant, the 

 pavement ant, and the small black ant, are the 



