虫

Sparganum proliferum (species of worm)

Oriental blood fluke (Schistosoma japonicum)

Yanbaru long-armed scarab beetle (Cheirotonus jambar)

carpet beetle (Anthrenus verbasci)

common pill bug (Armadillidium vulgare)

tapeworm

cottony cushion scale (species of scale insect, Icerya purchasi)

Derogatory

diligent student; drudge; swot

bark beetle (Scolytidae spp.)

gribble (Limnoria lignorum); grain borer; wood borer

Proverb

to sacrifice something small in order to save something great; to lose a leg to save one's life; to kill a small bug and help a large one

Medicine

parasitosis; parasitic disease; vermination; helminthiasis

ringworm (of the groin); jock itch; tinea cruris

Chinese wax scale insect (Ericerus pela)

decayed tooth

Medicine

scrub typhus; tsutsugamushi disease

Proverb

to sacrifice something small in order to save something great; to lose a leg to save one's life; to kill a small bug and save a large one

pork tapeworm (Taenia solium)

grasshopper

Proverb

sacrifice something small in order to save something great; lose a leg to save one's life; to let a large bug live and kill a small one

flagellates; mastigophorans

Organization name

Entomological Society of Japan

Word usually written using kana alone

bombardier beetle (esp. species Pheropsophus jessoensis)

stink bug

bur (prickly seeds or seedheads that stick to fur and clothes); burr

insects harmful to pine trees