3D reconstruction and scanning electron microscopy of salivary glands of the millipede Rhinocricus padbergi (Verhoef, 1938) (Diplopoda: Spirobolida)

The three-dimensional technique applied to the salivary gland of the millipides Rhinocricus padbergi showed that it is a single structure, dorsolaterally located to the animal gut and composed of two distinct portion: an acinar and a tubular one. The last one opening onto the oral cavity. This work shows that the salivary gland in R. padbergi, although is a single body, it displays two excretory ducts (one in each side of the anterior end of the gut) which has the function of carrying out the secretion produced toward to the oral cavity, contrary to the anterior data registered by other authors who suggested that the salivary gland in diplopod animals would be a paired structures.