tortoise beetle

6040   I found this bug clinging to the patio screen door from the inside.    It has wings and when it was upside down it opened its wings to turn  itself around. It appears to have a clear scan like outer shell.   Please advise on what this is. Thank you.   Lisa,  Woodstock,Ontario 

This is a tortoise beetle (Coleoptera: Chrysomelidae; subfamily Cassidinae). It appears to be Plagiometriona clavata, known as the clavate tortoise beetle; see https://tinyurl.com/2emdkpo for an image. Ed Saugstad, retired entomologist; Sinks Grove, WV.