Abstract
The fourth species of the family Fissiphalliidae is described, Fissiphallius martensi new species, from Reserva Ducke, Manaus, Amazonas, Brazil. It differs from other 3 species of the family by having ventral plate sword-like, sulcus II straight, the presence of a high spine on the eye mound, spines on coxa IV, lateral margin of dorsal scute, tergites, anal operculum and sternites, and the genital operculum shorter than stigmatic area.References
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