from The Century Dictionary and Cyclopedia
- n. One who murders his guests.
hospit- + -cide (Wiktionary)
From Latin *hospiticīdium, from hospes, hospit- + -cīdium ("killing"); compare English -cide. (Wiktionary)
To attest a morphological boundary between -it- and –al, we would then still have hospitable, hospitality independent derivation and semantic identity, hospitary, hospiticide, hospitize, and their various forms.