Excerpt from change request document:
The Tesaka have never been part of the Antanosy or Betsimisaraka in any way whatsoever- it was a glitsch of our map and of the ISO process that they ended up erroneously as an alternate name for the Betsimisaraka.in the Ethnologue.
The Atesaka are a large people group with a very definite separate identity and language. The Atesaka tend to migrate all over the island in search of work, but always keep that group identity. When an Atesaka dies outside the Tesaka area, the body is transported back to the ancestral land. When preparing the ground for the Tesaka translation of Luke, we had to visit with the "kings" of the "telo troky" (=three stomachs) and with the fourth who claims to have a valid claim to royalty. The Tesaka language is roughly between 70% and 80% similar to Official Malagasy, 76% with Tanosy; 78% with Betsimisaraka. The Tesaka distinguish themselves very definitely from the Merina and from those around them.