[Latin gender corrsp. genera/species]

Ave

Pagodula (fem) echinata (fem) OK
Hexaplex (masc?) trunculus (masc) ...OK
But...
Ocenebra (fem) erinaceus (masc)
Trophonopsis (fem) muricatus (masc):
This last one was first named Murex muricatus, with Murex supposed to be
masc.
Now that the species migrated to Trophonopsis, we are supposed, as
latinists, to change the gender...
But, as conchologists etc.,  are we allowed to do so, or is there a rule
somewhere that keeps the original gender, even if it became wrong ?

I always see some Ocenebra erinaceus here, there, there again, and
(sometimes) perhaps one little "erinacea".
I feel ill when I write "erinaceus" after an girl named Ocenebra, but I
continue, until someone tell me I'm allowed to write what I want.
What say the grammatical rules in Latin Zoology ?

Caro

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