How do I theme a blog listing page for a specific taxonomy term?
Blog list pages render node teasers. I think that the automatic template suggestion patterns would only operate on node attributes and taxonomy is not one.

You can add this to your theme's template.php file

function THEME_preprocess_node(&amp;$variables) {
  // check for blog and teaser
  if ($variables['type'] == 'blog' &amp;&amp; $variables['view_mode'] == "teaser") {
     // check for taxonomy term on node
     dpm($variables);
     if ($variables['field_TAXONOMYFIELD'][LANGUAGE_NONE][0]['tid'] == TAXONOMYID) {
       // change the readmore link here or add code for template file
       $variables['content']['links']['node']['#links']['node-readmore']['title'] = "Custom Read Me";
     }
  }
}


If you don't want to override the readmore link inside the preprocess function but absolutely want a template file, then you can instead do this:

array_unshift($variables['theme_hook_suggestions'], "node__blog__blahblah");