Karenic
Karenic languages are currently spoken in the Salween River drainage basin area of eastern Myanmar and northwestern Thailand. Lexical similarities with Nungish and other Eastern Sino-Tibetan branches indicate an northerly origin in the Upper Yangtze area of Yunnan prior to its southward dispersal.
Karenic came into contact with Austroasiatic during its migration southward and borrowed many words from languages in the Northern Austroasiatic linkage. As Karenic encountered a new environment with different fauna, many animal names were borrowed from Austroasiatic including the words for tiger, bat, buffalo, horse, monitor lizard, pangolin, peacock, and bamboo rat.
Syntactic restructuring also occurred as Karenic switched from an original Sino-Tibetan-type SOV word order pattern to that of the Austroasiatic-type SVO word order pattern. Thus, the arrival of Karenic in the Lower Salween region of Myanmar likely dates to no older than 3,000 years B.P. I would consider 2,500 years B.P. to be a likely date for Proto-Karenic. Karenic internal diversity is comparable to that of Bahnaric, Kra, and Hmong-Mien.
SplitsTree analysis (January 2019)
Karenic clearly consists of two brnches - Pa'o and Karen.("Core Karenic").
32 languages for Shintani (2012) and 59 lexical items were used in this analysis. Words for selected for presence or absence of prefixing or suffixing syllables, vowels (diphthongs, etc.), consonant initials, etc.
The analysis supports the classification of Shintani (2012) rather than Manson (2011). Manson's (2011) classification is based on many sound changes that are actually parallel developments and areal features rather than true innovations.
Classification
Pa'o
Northern
Southern
Karen
Kayan (Padaungic)
Kayin Phyu
Yathu Gekho
Thaidai
Padaung cluster: Padaung, Yinbaw, Kangan ("lowland") Kayan, Kakhaung ("highland") Kayan
Gekho cluster: Gekho, Kadaw, Taungmying
Nagi (Nangki) Kayan
Latha ("North") Kayan, Zayein
Thamidai
Kayah (Karenni)
West Kayah, Manaw
Yingtalay
Manu-Bwe
Manu
Bwe
East Kayaw
West Kayaw
Bwe
Geba
Mopwa-Pwo-Sgaw
Mopwa, Blimaw
Pwo-Sgaw
Pwo
Sgaw cluster
Sgaw
Monebwa, Paku
Thalebwa
Sources
Shintani Tadahiko (2012). A handbook of comparative Brakaloungic languages. Tokyo: ILCAA.
Luangthongkum, Theraphan. 2019. A View on Proto-Karen Phonology and Lexicon. Journal of the Southeast Asian Linguistics Society (JSEALS) Vol. 12.1 (2019): i-lii. ISSN: 1836-6821, DOI: http://hdl.handle.net/10524/52441