There will probably never be a page A. architectus, unless the three species are lumped...they are just too difficult to ID, even in pinned specimens. Color is probably the single worst character to go by, as it is obviously highly variable between species and is also extremely variable within a species. Overall hairiness is sometimes useful in distinguishing A. architectus from A. nigrellus and A. caerulescens, but not in distinguishing nigrellus and caerulescens from each other. Also keep in mind that there are also metallic blue species of Ageniella (subgenus Ageniella, such as A. cupida in the northeast), which means metallic blue doesn't always mean Auplopus (but it's probably a really good bet...with a little caution). Ironically, males of this complex are rather simple to ID, if a frontal view of the face is available.

Moving to Auplopus genus page for now. The genus is in bad need of revision, and one cannot always go by color alone.

something in the genus Auplopus from the looks of it... however, i do not, at the moment, have a key for said genus. i was about to post an Auplopus picture, but you seem to have beaten me to the punch. perhaps Auplopus architectus... that is what i think i am going to add.