Oblique dorsal view. Note the punctation of the vertex of the head, and its pronounced elevation above the pronotum. And also the distally well-separated, sharply tapered elytra...characteristic of Macrosiagon
The dark brown wings and sharply acute tibial spines here are characteristic of M. flavipennis
, vs. tibial spines truncate and wings yellowish-hyaline
for M. fernaldum
, according to Rivnay.
Full-size image here