[Carriage Hill]

The common American and Asian ladybeetles doesn’t bite or stink, although they’re carnivorous and we used them for aphid and gnat control in greenhouses.

Do you see it on this page?

http://commons.wikimedia.org/wiki/Category:Harmonia_axyridis

[Bikkuri]

Is the harlequin the same bug that clusters in corners of rooms and bite? From what I recall, they also stink.

Yes, that is correct ;^)

That's the Harlequin Beetle. Different critter, altogether: ~

Ironically enough, just 2 or 3 dats ago, I specifically looked this type up (having a problem with them here in Japan)..

Harmonia axyridis:
   Harlequin ladybird (Ladybug.... Brit's Ladybird is so annoying to me..)
      It is commonly known as the Harlequin ladybird (because it occurs in numerous colour forms).
       (I know that you specified the Harlequin Beetle, but, same Wiki talking about the Harlequin Ladybug: )

~

  Worldwide propagation
    Many people now view this species as a nuisance,[5] 
    partly due to their tendency to overwinter indoors and the unpleasant odor and stain left by their bodily fluid when frightened or squashed, 
    as well as their tendency to bite humans.[5]

I alwqays find it strange that when i am researching something, usually, a few days later, there is always a thread about what I was researching (o.O) lol ;^)

[1_Rain_Drop]

The only ladybug/bird I approve of is the adalia bipunctata.

The bugs on that page (took forever to load on dial up LOL) are the ones that I cringe when I see them. They’re nasty. Now I will feel no ill smooshing them.