Dictionary of invertebrate zoology
OBTURACULUM
obturaculum: translation
n.[L.dim.obturare, to plug or close]
(ARTHROPODA: Insecta)
In Anoplura, a connective-like tissue structure that divides the hemocoel of the head from the thoracic hemocoel; continuous posteriorly with a heavy coat surrounding the thoracic ganglia; neck-plug.