This is a giant walking stick (Megaphasma denticrus).  They are common in Missouri in late summer.  This beautiful insect is about 10" (25 cm) long and very colorful.  The image was captured with a Nikon D7200 equipped with a 60mm Micro-Nikkor lens.  The "walking stick" is resting on a lazy Susan allowing the specimen to be rotated for optimum illumination.

Here is a link with more information including their role in the environment: https://mdc.mo.gov/discover-nature/field-guide/walkingsticks-stick-insects#:~:text=All%20Missouri%20walkingsticks%20are%20wingless,can%20be%203%C2%BE%20inches%20long.

Here’s a link to a blog written by one of Missouri's Master Naturalists: http://springfieldmn.blogspot.com/2018/01/incredible-walking-sticks.html