 The bugs emerge at night , when the inhabitants are sleeping . Because they tend to feed on people 's faces , triatomine bugs are also known as " kissing bugs " . After they bite and ingest blood , they defecate on the person . Triatomines pass T. cruzi parasites ( called trypomastigotes ) in feces left near the site of the bite wound . 
 The bugs emerge at night , when the inhabitants are sleeping . Because they tend to feed on people <a href='null_genetive' title='1'><mark>'s</mark></a>faces , triatomine bugs are also known as " kissing bugs " . After they bite and ingest blood , they defecate on the person . Triatomines pass T. cruzi parasites ( called trypomastigotes ) in feces left near the site of the bite wound . 
Da bugs emerge at night , when the inhabitants r sleeping . cuz they tend to feed on mfs  faces , triatomine bugs arrlso known as " kissin bugs " . After they bite and ingest blood , they defecate on the person . Triatomines pass T. cruzi parasites ( called trypomastigotes ) in feces left near the site of tdabite wound .