Figure 8 in Taxonomic revision and notes on natural history of the enigmatic beetle genus Gibboryctes Endrödi (Coleoptera: Melolonthidae: Dynastinae)

Figure 8. Right maxilla in ventral view. (a) Gibboryctes szelenyii Endrödi; (b) Gibboryctes ebeninus sp. nov.; (c) Gibboryctes endroedii sp. nov.; (d) Heterogomphus gracilicornis Prell; (e) Tetragus waldenfelsi (Endrödi). Red arrows indicating triangular galea in (a), elongate maxillary palpomere II in (b), lobed inner margin of galea and stipe with triangular lobe in (c), pointed and triangular teeth on galea in (d), scythe-shape d teeth and rounded inner margin of galea in (e).