sting sheath gland
From ZooTerms (Dictionary of Invertebrate Zoology)
sting sheath gland: (Arthropoda: Insecta) In Hymenoptera, a gland in the sting sheath valves of various bees, in the form of a high palisade gland epithelium beneath a strongly sclerotized strip on the outer sides of the sheaths; function unknown.
