@alainhogue says,

BugGuide uses Phaeogenini while iNat uses Alomyini. Who is not up to date?

@cmcheatle:

It would require a deep dive to be sure, but both names are still being used in published articles within the past 2 to 3 years. So far I did not find a reference stating one has been merged with the other.

@bclaridge:

Both are valid names for different taxa. Alyomyini includes Alomya, Pseudoalomya and Megalomya. Everything else listed under Alomyini in iNat is Phaeogenini. See the most recent classification based on phylogenomic data for specifics: https://onlinelibrary.wiley.com/doi/full/10.1111/syen.12484 1

There were also a lot of other tribal changes, mainly that most of the tribes were found to be poly or paraphyletic and most synonymized to Ichneumonini. A couple other tribes were erected though.

I changed these tribes according to this paper (https://onlinelibrary.wiley.com/doi/full/10.1111/syen.12484). Alyomyini ended up with 2 genera. Phaeogenini has 47 genera (I found around 30), which matches Bugguide.