June Insect Phenology

by Carl Strang

Insects, like plants, continue to reflect an early phenology this year. First appearances of insect species in June at Mayslake Forest Preserve were a median 22 days earlier than last year (13 species, range 66 days earlier to 46 days later). As was true for first flower dates, the difference was less extreme between 2012 and 2010, with a median of 15.5 days earlier this year for 14 species, ranging 48 days earlier to 62 days later.

The reversed haploa was close to the median values, appearing 22 days earlier than last year and 2009, 7 days earlier than in 2010.

The median difference was back to 22 days relative to 2009, ranging 80 days earlier to 31 days later for 13 species.

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