noun
groundhopper; Tetrix japonica
Refers to a small grasshopper-like insect of the family Tetrigidae, especially the species Tetrix japonica found in Japan.
田んぼのあぜ道でヒシバッタを見つけた。
I found a groundhopper on the footpath between the rice fields.
ヒシバッタは小さくて、よく跳ねる。
Groundhoppers are small and jump well.
バッタ is the general term for grasshopper, while ヒシバッタ refers specifically to the groundhopper (family Tetrigidae), which is smaller and has a different body shape.
The name likely derives from 菱 (hishi, 'water chestnut' or 'diamond shape') + バッタ (batta, 'grasshopper'), referring to the diamond-like shape of the insect's body. The exact origin is uncertain.