Mouthparts of G. orchidophilus (SEM); (A) Head in lateral view; lacinia (l) and galea (g) form a functional unit which is in close contact with the mandible (ma); la labium, lr labrum, lp labial palpus; (B) Galea (g) and lacinia (l) in frontal view, showing a groove (arrow) extending over the galea beginning at the apical hair patch; (C) A medial view shows large apical hair patch of the galea (g) and the connection between the lacinia (l) and galea; arrow indicates the acute process of the lacinia (D) Microtrichia of galea tip.