Japanese cockroach
Refers specifically to the species Periplaneta japonica, a common cockroach native to Japan. Often distinguished from the German cockroach (チャバネゴキブリ) and the smokybrown cockroach (クロゴキブリ).
The Japanese cockroach is resistant to cold.
We often see Japanese cockroaches around here.
Katakana spelling is standard for this species name; usually written in kana.
Mixed hiragana-katakana spelling; less common but still seen.
Kanji spelling is rare and mainly used in formal or scientific contexts; no priority is specified.
ヤマト (Yamato, an ancient name for Japan) + ゴキブリ (cockroach). The exact origin of ゴキブリ is uncertain, but it may derive from 御器噛り (goki-kaburi, 'bowl-biter') or a similar phrase.