Original post here. Original text “The Sex Horrors of Laboratory 66 by FiendishDeathtrap.” Image contains a caption:

The girl was as brave as she was beautiful! But she was no match for the depraved scientist, his billionaire backers, and his hellspawn creations! There was no escape! She was condemned to endure the SEX HORRORS of LABORATORY 66.

And a pull-quote:

“Don’t look so surprised, my dear. You didn’t really think I’d let my plans be thwarted by one silly girl-reporter did you? Well, I told you you’d get an up-close and personal tour of Laboratory 66, and now I’ve kept my word! Enjoy my pet’s attentions. When it is done, your luscious body will be host to one million of its maggot young!”

Internal text sources the illustration to deathtrap.eroticillusions.com.