I think that these may be Harlequin bugs? By the way, the photos on your site are marvelous – what lovely bugs! I snapped these on an unknown plant in the field behind our house; possibly a mustard plant of some kind. Have been practicing taking pictures of small things like flowers, and am proud of this bug photo.
Our site does have many marvelous photos, all of which have been contributed by mostly amateur photographers like you. Not only should you be proud of your photo, you should also be commended for taking the time to properly identify your Harlequin Bugs, Murgantia histrionica.