FIGURE 5 in Two new species of penicillate millipedes (Diplopoda, Polyxenidae) from Phu Quoc Island in southern Vietnam

FIGURE 5. Scanning Electron Microscope images of Unixenus intragramineus sp. n.: A. Head, the posterior vertex trichomes group (pv), collum (Co) and tergite 2 (T2); B. Trichobothria a, b and c; C. Labrum showed 4 + 4 lamellae (l); D. Labrum with the pointed spherical papillae (Psp) on its surface; E. The male caudal bundle structure showing the dorsal ornamental trichome sockets (ots), barbate trichome sockets (bts), trichome socket free tissue (tsft) and caudal trichome sockets (cts) with some caudal trichomes (ct) attached. F. The caudal bundle structure of females showing a difference in the arrangement with caudal trichome sockets (cts) located dorsally, barbate trichome sockets (bts) with the largest size in the centre, trichome socket free tissue (tsft) and nest trichome sockets (nts) that were smaller located centro-ventrally.