six in the morning
`` At different hours of the day you are stung by different species . Every time that the scene changes , and , to use the simple expression of the missionaries , other insects ` mount guard , ' you have a few minutes -- often a quarter of an hour , of repose . The insects that disappear have not their places instantly supplied by their successors . From half-past six in the morning till live in the afternoon the air is filled with mosquitos . An hour before sunset a species of small gnats -- called tempraneros , because they appear also at sunrise -- take the place of the mosquitos . Their presence scarcely lasts an hour and a half . They disappear between six and seven in the evening .