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incandescent light inside provides a light source, enabling the 

 collector to aspirate flies which land on the illuminated cloth. 

 Flies are attracted to the light, the collector, or a combination or 

 both (Young, 1979). 



Baited traps . Pieces of dry ice wrapped in newspaper and 

 suspended next to the CDC light traps provided CO2 as an adjunct 

 attractant for hematophagus insects (Fig. 2-11). A caged hamster, 

 suspended in a similar manner, also served as an attractant. 



A Disney trap (Disney, 1966) baited with a hamster or wild cotton 

 rat ( Sigmodon sp.) was also used. This trap consists of a shallow 

 tray filled with mineral oil and a caged animal supported on slats 

 just above the surface of the oil. After feeding, blood engorged sand 

 flies do not fly away, but hop to the "ground" to rest, becoming 

 entrapped in the mineral oil. 



Sticky traps . Sheets of card stock, coated on one side with oil, 

 were placed directly in front of or over burrow entrances and crevices 

 in rocks and trees to catch sand flies emerging from such places at 

 night (Butticker , 1979). 



Processing and Maintenance of Wild-caught Sand Flies 

 and Recovery of Eggs 



Wild-caught female sand flies showing evidence of a blood meal 

 (abdomen distended and dark-red or black in color) were transferred to 

 individual 7-dram oviposition vials fitted with screen lids (Endris et 

 al ., 1982). Water was added to the plaster of Paris in the bottom of 

 each vial to maintain a high relative humidity, and a drop of Karo® 

 syrup in water (1:1) was placed on the screen lid to serve as an 



