Eucorydia yasumatsui (species of cockroach)
A specific species of cockroach with a metallic blue or green sheen, native to parts of East Asia. The name is a taxonomic designation; in everyday contexts, it is simply a type of cockroach.
Eucorydia yasumatsui is known for its beautiful lapis lazuli-like luster.
This specimen is a male Eucorydia yasumatsui.
General term for cockroach; ルリゴキブリ is a specific species within that group.
Katakana spelling is standard for this species name; usually written in kana.
Kanji spelling is rare and mainly found in taxonomic or older texts; 瑠璃 means lapis lazuli/azure, 蜚蠊 is an old compound for cockroach.
From 瑠璃 (ruri, 'lapis lazuli, azure') + 蜚蠊 (gokiburi, 'cockroach'), referring to the insect's iridescent blue-green coloration. The katakana spelling is standard for biological species names.