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Lutzomyia diabol lea . Lu . diabol ica (Fig. 2-17), the only 

 anthropophi 1 ic sand fly found, was collected at all positive sites and 

 accounted for 99% of the total catch (Table 2-1). They were collected 

 in greatest abundance at Garner State Park where they were captured 

 while resting on the tile walls of the public latrines (Fig. 2-6). 

 There were a total of 12 latrines at the park, 8 of which were 

 situated in the upland meadow areas and 4 along the Frio River flood 

 plain, shaded by large pecan, oak, and cypress trees. Up to 150 Lu . 

 diabol ica per day (nights and mornings) were taken in resting 

 collections from the 8 latrines in the more elevated portions of the 

 park. Many were engorged with fresh blood, possibly from the 

 unprotected parts of unsuspecting campers, or from deer and jack 

 rabbits that frequent the surrounding meadows by night. No sand flies 

 were collected from the latrines near the river. Although a few sand 

 flies could usually be found in positive latrines at all hours of the 

 day, they typically appeared about one hour after sunset (2200 hrs in 

 June, 2100 hrs in September) and remained until mid morning (about 

 1000 hrs), their activity coinciding with the daily bathing ritual of 

 the campers. They were observed resting on the interior tile walls 

 between the level of the floor and a height of about 2.5 m and seemed 

 to prefer dark humid corners, such as in shower stalls and under sink 

 counters. Their resting attitude was almost always vertical, with 

 head pointing up. They were frequently observed hopping deliberately 

 toward the collector, presumably seeking a blood meal. If by chance 

 the lights in a latrine had not been turned on, the catch was greatly 

 reduced. Greatest numbers appeared on hot, humid nights (27°C and 80% 

 or higher RH) with little or no air movement. On such nights sand flies 



