Adult population fluctuation of Comadia redtenbacheri (Hammerschmidt, 1847) (Lepidoptera: Cossidae)

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Abstract
Comadia redtenbacheri (Hammerschmidt, 1847) is an insect highly regarded for its commercial and nutritional value. Adult fluctuation in a plantation of Agave salmiana Otto ex Salm-Dyck was determined using ultraviolet light traps. Trapped adults were counted weekly during three periods (December 2013 to December 2014, December 2014 to December 2015, and December 2015 to June 2016), and temperature and relative humidity were recorded. Adult population was present 157 days on average, from December to May, with peak capture on day 83. The average sex ratio of females to males was 1:14. Average environmental conditions that favoured the highest capture in the three periods were 17.8º C and 47.1% relative humidity. Knowledge of the period of adult presence and the influence of temperature and relative humidity are important for management and conservation of the insect population by farmers and gatherers.

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