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Photo#15949
mason wasp larvae in a nest. - Ancistrocerus catskill

mason wasp larvae in a nest. - Ancistrocerus catskill
Harvard, Worcester County, Massachusetts, USA
July 9, 2004

Ancistrocerus cf. catskill
See my comment on associated picture of adult.

 
Adult female
This is the image Mathias mentioned
. It is nice to have them linked.

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