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Photo#386153
Embola ionis

Embola ionis
1 mile west of Charleston, Coles County, Illinois, USA
March 18, 2010
Size: Length, 6.5mm
The top panel shows a cocoon of Embola ionis inside a stem of wild four o'clock, Mirabilis nyctaginea (Nyctaginaceae). The cocoon contains an E. ionis larva, which is a stem borer in M. nyctaginea. After the larva finished feeding in late 2009, it spun the cocoon and overwintered inside it. The larva was collected 1 mile west of Charleston, Coles County, Illinois, on 18 March, 2010 and was brought indoors, where it pupated in early April, 2010.

The bottom panel shows the reared adult of E. ionis that emerged from this cocoon on 17 April, 2010.