One interpretation of a tarantula appearing in your dream is that your interests will be betrayed by a friend in who you trust. This interpretation is especially true if you prevailing mood during the dream was unpleasant. A lot of things will be shared with this friend but at the end he/she will not appreciate your honesty and they will in a sense betray you for their own benefit. You will be naturally quite disappointed and angry but you should understand that you can only get out from the troubles by being coolheaded and rational.
Other interpretation that holds true if the dream was had in the early hours of the night is that you soon would need to make a quite unpleasant conversation with someone. This conversation will be of matters that you consider to be denigrating but you would need to the make the conversation nonetheless as it will be unavoidable.
If you had a dream in which you had seen a tarantula during the early morning hours indicates that you have a rather responsible and caring nature. This innate trait of yours will be quite useful in your personal life even if you at times think that you are ‘too soft’ on some people in your environment and that you should toughen up your attitude.
The meaning of a dream in which you are stung by a tarantula is that you have a lot of ill wishers in your environment. Most of this ill wishing is the result of envy and general hateful predispositions that some people around you have. Despite the ill wishing none of these people will have the actual courage to take any more direct action against you.