FIGURE 15. Humbertium ithorense. RMNH.VER.20261.a in Molecular phylogenetics facilitates the first historical biogeographic analysis of the hammerhead worms (Platyhelminthes: Tricladida: Bipaliinae), with the description of twelve new species and two new genera

FIGURE 15. Humbertium ithorense. RMNH.VER.20261.a (field number RS83). Photomicrographs. A. Sagittal section of the female genital duct, anterior to the right. Notice the number of erythrophil secretions indicated by white arrowheads; B. Section showing a part of the copulatory apparatus; anterior to the right. Notice the fold of the common atrium filled with erythrophil secretion, indicated by a white arrowhead.