Hylomus enghoffi (Nguyen, Golovatch & Anichkin, 2005)

(Figs. 1, 6−8)

Desmoxytes enghoffi Nguyen, Golovatch & Anichkin, 2005: 256−257, figs. 26−33.

Hylomus enghoffi: Srisonchai et al. 2018a: 10 .

Material examined: 1 male, 1 female (IEBR-30) Quang Binh Province, Phong Nha-Ke Bang National Park, secondary forest, July 2003, coll. Pham Duc Tien; 1 male, 2 females (IEBR-217) same locality, but limestone forest, 10−22 August 2011, coll. Anh D. Nguyen; 9 males, 1 female (IEBR-218) and (IEBR-Myr IPE5) same data as sample IEBR−217.

Diagnosis: The species can be distinguished from its congeners by the combination of the following characters: paraterga antler-shaped; metaterga with transverse rows of 2 + 2 and 1 + 1 setiferous spines; epiproct modified, with 2 + 2 non-setiferous knobs near tip; only male leg femur 7 inflated (Figs. 6−7); postfemoral region of gonopod not extremely short; solenomere subfalcate; tip of lamina medialis with 2 apical lobules; spine z prominent (Fig. 8).

Previous records: Quang Binh Province (Phong Nha - Ke Bang National Park) (Nguyen et al. 2005).

Distribution: Only known from central Vietnam.