Caused by genetic factors in the condition called erythrism. Which shows a rare color red pigmentation. This pink locusts have properties similar to the green grasshopper.
Although called pretty and charming, but can not deny this pink locusts could not camouflage the air-plants (predominantly green), making them easy targets for hunters of locusts.
Found in Osaka, Japan. Museum “Of Natural History Osaka” identifying them as larvae Euconocephalus thunbergi (“kubikirigisu” in Japanese). And not just pink locusts which were found in Osaka, but there are other colors too.