That wasp stingers contain venom is a matter of common knowledge and biological fact, requiring no specific citation.
The claim that queen wasp stingers contain venom is a basic biological fact about wasps (Hymenoptera), which possess venom glands and stingers for defense and predation. Because it is a matter of everyday observation and textbook knowledge, it falls under the COMMON_KNOWLEDGE category per Step 0, and no papers are attached.