410 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 14 



Acknowledgment 

 The writers wish to express their sincere thanks and appreciation 

 to Mr, W. S. Suttie, who appHed the dust with the dusting machine, and 

 who showed a remarkable interest in the EutettLx problem and faithful- 

 ness in his work during the past three years. 



DISTRIBUTIONAL AND ECOLOGICAL NOTES ON ANOPHELINE 



MOSQUITOES IN CALIFORNIA^ 



By William B. Herms, 

 Professor oj Parasitology, University of California 



No doubt it will be readily conceded that a complete study of the de- 

 tailed distribution of Califomian anopheline m.osquitoes or any other 

 species is a matter of considerable proportions presenting many obstacles 

 such as extensive area, extreme elevations, transportation difficulties, 

 etc. In area alone California's 153,650 sq. m.i. of territorv'- represents the 

 combined areas of Mississippi, Louisiana and Alabama, a mosquito sur- 

 vey of any one of which would represent a m.agnificent task. However, 

 an attempt has been m.ade to carry out a state wide m,osquito survey in 

 which a distance of 18,000 miles was covered by automobile alone, reach- 

 ing eyevf count}^ in the state. Elevations were reached ranging from 

 about 200 feet below sea level in the Imperial Valley to about 10,000 feet 

 above sea level in Tuolumne County. A total of 690 mosquito collec- 

 tions were made consisting of 6650 m.osquitoes of all kinds. It was found 

 that there are three species of Anophelines in California, viz., — A. occi- 

 dentalis D. & K. (the western form of A. quadriniaculatus Say), A. 

 punctipennis Say and A. pseudopunctipennis Theobald. Although the 

 survey was intended to be a m.alaria-mosquito survey, it was considered 

 highly important to include all available species of m.osquitoes in even^ 

 collection in order to know the relative abundance of anophelines in any 

 one locality. 



For purposes of comparison and administration the state was divided 

 into the following divisions; viz., Sacram.ento Valley Counties, San 

 Joaquin Valley Counties, Sierra Counties (northern and m.iddle), 

 Plateau Counties (northern and m.iddle). Coastal Counties (northern, 

 m.iddle and southern), and Southern California as given in detail in 

 earlier papers.-'^ Furthermore in developing the totals it was found 



^Contribution from the Division of Entomology and Parasitology, College of Agricul 

 ture. University of California. 



^Occurrence of malaria and Anopheline mosquitoes in Northern California. U.S. 

 ■Public Health reports. Vol. 34, No. 29, pp. 1579-1587. July 18, 1919. 



'Occurrence of malaria and Anopheline mosquitoes in Middle and Southern California. 

 U. S. Public Health Reports. Vol. 35, No. 6, pp. 275-281, Feb. 6, 1920. 



