If the fetus is human, it is just as valuable as the mom. We already discussed in much earlier posts why a fetus is just as valuable assuming it human.
If the fetus is not human, then it gets treated like an animal or something non living which even religious people will attest then it's okay to get an abortion at this point. I myself would be okay with it. My only problem is the argument of potentially becoming a human, but I do ask we leave that to the 'are fetus' humans?' thread
Why should I accept that the fetus being human (or not) matters in determining its value?
Rights and responsibilities go together. A fetus, not being able to bear responsibilities, has no rights. Those who do have rights may wish to give the fetus some
protections, but those protections are not as secure as rights.
So as I see it, we have two classes of beings: those who can participate in human society and those who cannot. Those who can participate in society can have a part in creating its rules (or at least giving consent). Those who cannot participate cannot have a part in creating its rules.
The fact that humans are the only consensually recognized participants in human societies at the moment does not, in my mind, rule out that something not human may present itself one day, stake its claim as being able and willing to participate in a human society, and be recognized as such. Perhaps it will be an extraterrestial alien or an intelligent animal. What is important is being able to understand rules, follow them, make binding agreements, etc. - i.e., the behavioral expectations we have of average human adults.
Elsewhere in this forum, I have discussed the case of domesticated animals. They cannot fully participate in human society, but some of them can follow some rules. Domesticated animals have been bred to be useful to humans and easily managed. However, their participation is marginal. They can follow rules, but (as far as we can tell) not fully understand them. They cannot make rules that would work in a human society. Thus, I would say that domesticated animals do not qualify for rights, but their protections may be at a higher level than what we give to wild animals.
So ... why do you define moral status by species?