- This is an important tribe of beetles, including families with four malpighian tubes and only five or six abdominal sterna, while in the thorax there is a backwardly directed process of the prosternum that fits into a mesosternal cavity.
18) have the prosternal process just mentioned, capable of movement in and out of the mesosternal cavity, the beetles being thus enabled to leap into the air, hence their popular name of "click-beetles" or "skip-jacks."
The Buprestidae are distinguished from the Elateridae by the immobility of the prosternal process in the mesosternal cavity and by the absence of the lateral processes at the hind corners of the prothorax.
These nine theoretical centres or " pieces " L'Herminier deemed to be disposed in three transverse series (rangees), namely the anterior or " prosternal," the middle or " mesosternal " and the posterior or " metasternal " - each series consisting of three portions, one median piece and two side-pieces.
The ventral surface of the prosoma bears prosternal, metasternal and usually mesosternal chitineplates (fig.
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