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7. Malar sulcus simple, not split. Frontal sutures (a1) reaching eyes at level of median ocellus.

Ceranisus Walker, 1842

7'. Malar sulcus split ventrally (when discernable). Frontal sutures (aa1) extending to near top of eye, sometimes ending in the suture crossing the vertex.

Thripobius Ferrière, 1938

a1

aa1
ceranisus_vertex2.jpg (105439 bytes)

thripobius_vertex.jpg (64746 bytes)

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