Do people even notice when insects other than butterflies and beetles go extinct?
I am not aware of a better list, but you are right that (1) many insects have gone extinct recently, and (2) documentation of insect extinction is poor.  An article in Conservation Biology (2005) says 


  The biodiversity crisis is undeniably an insect biodiversity crisis. Yet insect conservation remains the awkward “kid sister” to vertebrate conservation. Nowhere is this clearer than in what we know, or rather do not know, about insect extinction, particularly for those extinctions that may have already occurred. ... What accounts for the tens of thousands of expected but undocumented insect extinctions? What does this discrepancy mean? How important is it to our understanding of extinction and the future of ecosystems? These should be questions at the heart of species conservation, yet they have hardly been addressed. No peer-reviewed articles have been published reviewing modern insect extinctions, and no estimates of global extinction rates have explicitly focused on insects. 


--Modern Insect Extinctions, the Neglected Majority (my emphases)

The book Insect Conservation Biology (2012) may have more info, though it still seems to focus heavily on the more charismatic species like butterflies.