Assassin bug

6463. Have found about 4 of these at different times the last few days inside the house. 2-3cm? One on shower curtain, two others around windows at night. This one flew short distance. We recently had some construction done in a basement bathroom. July 2019. Toronto, ON. Canada

Number 6463.  This is an assassin bug known as a masked hunter (Reduvius personatus; Hemiptera/Heteroptera: Reduviidae). This is a cosmopolitan species often found indoors and reputed to have a very painful ‘bite’- Click here for more detailed information. The fact that you’ve found several indicates that there must be a fair population of other insects in your house for them to feed on.