Plant Bug - Lygus sp. - this bug is in the Family "Miridae," know as "Plant Bugs.".    From Wordnik.com.  [Iowa Voice] Reference

Miris calcaratus Lygus viridis (on birch).    From Wordnik.com.  [Records of Woodhall Spa and Neighbourhood Historical, Anecdotal, Physiographical, and Archaeological, with Other Matter] Reference

The second photo shows the Lygus bug's proboscis.    From Wordnik.com.  [Iowa Voice] Reference