I ran across this fantastic scientific illustration on Wikimedia: dissection of the European garden spider Araneus diadematus (=Epeira diadema), circa 1902.
The artist, Paul Pfurtscheller (1855-1927), taught biology classes until his retirement in 1911. His artwork was done in the form of wall charts to support his teaching lessons.
https://en.wikipedia.org/wiki/Paul_Pfurtscheller
@rspfau the closeup of the lil spood paws