This is Oddlem's Mothgirl. It's a part of an Monster Girl art trade I started in the forums.
https://www.newgrounds.com/bbs/topic/1435359
You can find the orginal here.
https://www.newgrounds.com/art/view/oddlem/mothssssssss
Make sure to check out Oddlem's work.
https://oddlem.newgrounds.com/
You are free to copy, distribute and transmit this work under the following conditions: