BEHAVIOR OF ANOPHELES ALBIMANUS WIEDE. AND 
TARSIMACULATA GOELDI.* 
JAMES ZETEK, 
Entomologist, Republic of Panama.. 
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INTRODUCTION. 
This paper is largely a report of definitely observed and 
demonstrated flights of Anopheles albimanus Wiede. and its 
racial variety tarsimaculata Goeldi. Darling (1912) has shown 
that these two species are the most important ones in the 
transmission of malaria on the Canal Zone. Albimanus is by 
far the commonest Anophelene about settlements, but at times, 
and locally, the race tarsimaculata appears in large numbers. 
At the salt-marsh northwest of Gatun, breeding of these two 
forms was so vigorous (apparently demoralized) that unlimited 
variations in the middle white band on the palpus were noted, 
this band being often represented by only a few white scales. 
For all practical purposes, however, these two forms may be 
considered as a single species. 
PRACTICAL VALUE. 
The answer to the question, aside from a purely scientific 
importance, ‘‘ what is the value of the knowledge of the behavior 
of mosquitos?’’, is that through this knowledge we are better 
*This paper was presented by title at the 1913 meeting, accompanied by a 
blue-print which gave the essential data concerning the flight studies. While in 
the interior of Panama, the writer hoped te revise the manuscript, but the mule 
which carried the packs containing the paper met with an accident while fording a 
stream and the manuscript was badly spoiled. It had to be rewritten upon the 
writer's return, from the original notes preserved in his laboratory. Hence this 
extreme delay.—Z. 
221 
