The blood locust comes in two varieties, daytime and nightime.
During the day, the blood locust is relatively harmless, congregating in swarms and only posing a danger if encountered while too fatigued to run away, or without the proper means to dispose of them several at a time.
When night falls, the blood locust has greatly increased strength, and appears in much greater numbers. During the night, a blood locust transmits a venom through its bite. Best avoided unless you can wipe them out several at a time.