Dispersal of Musca Domestica Linne.

Abstract

The latter part of May, 1913, unusual numbers of flies appeared at the Isthmian Canal Commission hotels and commissary at Balboa, Canal Zone. An inspection revealed a pile of cow manure, etc., about 800 square feet in area, located at one corner of Ancon Cemetery, 2,500 feet distant in direct line from the hotel. This place is indicated by the letter “B” on the accompanying map. This manure was heavily infested with maggots, principally of Musca domestica, Hermetia illucens, Volucella obesa, and Paralucilia macellaria. Puparia were very abundant and adults in countless numbers. This was the only manure pile found away from the incinerators.