Mimectatina divaricata divaricata, a nominotypical subspecies occuring in Russian Far East, China, Japan and Korea, has been described from Japan as Sydonia divaricata by Henry Walter Bates in 1884 [▽].

Body length:	6 - 9 mm
Life cycle:	1 - 2 years
Adults in:	May - July
Host plant:	polyphagous species
Distribution:	Russian Far East, China, Japan and Korea

The depicted beetle was collected in Kunashir Island (Kuril Islands, Sakhalin Oblast, Far Eastern Federal District, Russia).

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[▽]
Bates H.W.:
Longicorn beetles of Japan. Additions, chiefly from the later collections of Mr. George Lewis; and notes on the synonymy, distribution, and habits on the previously known species.
The Journal of the Linnean Society of London. Zoology 18: 205-262, 1884. [download ]

[❖]
Miroshnikov A.I.:
Новые и малоизвестные жуки-дровосеки (Coleoptera, Cerambycidae) c Дальнего Востока и систематическое положение рода Stenhomalus White, 1855
[ New and Little-Known Long-Horned Beetles (Coleoptera, Cerambycidae) from the Soviet Far East and the Taxonomic Position of the Genus Stenhomalus White, 1855. ]
Entomologičeskoe Obozrenie 68: 739-747, 1989. [download ]