Key to species of Abbrosoga Caldwell

1 Pro- and mesothorax with narrow dorsal median vitta (Fig. 1A), scutellum pale; frons relatively narrow (Fig. 1B, frons l:w ratio>2); gonostyli distally with ventral hook in lateral view (Figs 2B, 4A); aedeagus with single ventral process (Fig. 4B), anal tube dorsocaudally without projection in lateral view (Fig. 4A)........................................ A. errata

1’ Thorax without median vitta, scutellum dark (Fig. 3A); frons relatively wide (Fig. 3B, frons l:w ratio ~1.5); gonostyli distally truncate in lateral view (Fig. 3E); aedeagus with single ventral process and two dorsolateral processes (Fig. 5B); anal tube projected dorsocaudally in lateral view (Fig. 3E)............................................... A. multispinosa n. sp.