At first glance (at least through typical pony eyes!),
Captain Tegama looks like every other changeling;
there is physically little to distinguish her. She
does, however, exude an aura of authority
and no one questions her judgment. She is
an effective leader who knows how to make
the most of what she has and lead her troops to
victory without unnecessary loss. Ponies who try to
deceive her or cast doubt on her plans find Tegama is
very difficult to sway.
One part of Tegama that can be exploited,
however, is her belief that she would make a better
changeling Queen than Chrysalis. While Tegama
follows the Queen’s orders without question, that
doesn’t mean she believes the Queen is making
prudent decisions. Should Tegama find herself in a
position of power over the Queen, she might spark
a civil war within the hive.

Not sure how the fuck she's considered identical to other changelings, she looks like a fucking changeling queen! And shockingly like Chrysalis' powered up/chaos form, wonder what that's about. A couple of times she's erroneously referred to as "Tegmina", only twice though so I think it's just an oversight.