1921
Volume s1-25, Issue 2
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645
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Abstract

Summary

A study is reported which confirms previously-published conclusions that, under normal conditions, does not move in significant numbers more than 1 mile from its breeding sources. However, an unusual condition is described where this species was observed to move 1 mile from its breeding areas in sufficient numbers to create a dangerous density—250 females per barn or shed per inspection. Near the sources of production, densities as high as 15,000 to 25,000 females per station per inspection are noted as very common, and one such record of 40,000 is included. In the study-locality (Fort duPont, Delaware) broods of this species are indicated at about monthly intervals during the summer season.

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/content/journals/10.4269/ajtmh.1945.s1-25.155
1945-03-01
2017-10-20
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