I'm intrigued by the azarae vs azarai situation, so I have asked about it on the nomenclature part of Birdforum because there are members there who specialise in this sort of thing. I'll let you know what I find out.
Birmingham Nature Centre Birmingham Nature Centre News 2014
- Thread starter Brum
- Start date
Relevant section of the current version of International Code of Zoological Nomenclature:
31.1.2. A species-group name, if a noun in the genitive case (see Article 11.9.1.3) formed directly from a modern personal name, is to be formed by adding to the stem of that name -i if the personal name is that of a man, -orum if of men or of man (men) and woman (women) together, -ae if of a woman, and -arum if of women; the stem of such a name is determined by the action of the original author when forming the genitive.
So the Central American Agouti is D. punctata rather than punctatus due to the gender of the word Dasyprocta but D. azarae should really be D. azarai because in this case it's the eponymous person's gender that matters. So D. azarae as a name is not compliant with the ICZN - I'm sure at some point someone influential will notice!
31.1.2. A species-group name, if a noun in the genitive case (see Article 11.9.1.3) formed directly from a modern personal name, is to be formed by adding to the stem of that name -i if the personal name is that of a man, -orum if of men or of man (men) and woman (women) together, -ae if of a woman, and -arum if of women; the stem of such a name is determined by the action of the original author when forming the genitive.
So the Central American Agouti is D. punctata rather than punctatus due to the gender of the word Dasyprocta but D. azarae should really be D. azarai because in this case it's the eponymous person's gender that matters. So D. azarae as a name is not compliant with the ICZN - I'm sure at some point someone influential will notice!
@Maguari, thanks …, I wonder how long it will take! 
a reply I received on the Birdforum thread I mentioned is that the specific name being azarae is due to treating the name as a first-declension masculine, which works. I'm not sure if it is completely accurate to do so given that it is a person's name, but it does mean it is not wrong (if that makes sense).So the Central American Agouti is D. punctata rather than punctatus due to the gender of the word Dasyprocta but D. azarae should really be D. azarai because in this case it's the eponymous person's gender that matters. So D. azarae as a name is not compliant with the ICZN - I'm sure at some point someone influential will notice!
Latin seems to have changed since I did it at school! That makes me feel really old
Alan
and continuing with the azarae nomenclatural discussion. I got a further, much better, answer from the Birdforum thread:
After visiting the Centre today I took a keen interest in the agouti enclosure signage and can safely state that they are Azara's agouti on the signage but still Azure's agouti on the map... 
Also the only other bit of interesting news is they now have a female golden lion tamarin and are mixing her with the male in the enclosure that holds cotton-top, goden lion and golden-headed lion tamarin. It was quite a spectacle as she kept disappearing and there was always one or two staff at the enclosure keeping an eye out for her.
The loris wasn't visible as the bulb has blown in its enclosure, I thought maybe it had been moved out but doubl checked to make sure the awesome little beastie is still in the collection!
Also the only other bit of interesting news is they now have a female golden lion tamarin and are mixing her with the male in the enclosure that holds cotton-top, goden lion and golden-headed lion tamarin. It was quite a spectacle as she kept disappearing and there was always one or two staff at the enclosure keeping an eye out for her.
The loris wasn't visible as the bulb has blown in its enclosure, I thought maybe it had been moved out but doubl checked to make sure the awesome little beastie is still in the collection!