Hylomus cattienensis ( Nguyen, Golovatch & Anichkin, 2005)

Nguyen, Anh D., Nguyen, Manh-Ha, Nguyen, Thu-Anh T. & Phung, Hong-Luong T., 2019, Review of Dragon Millipedes (Diplopoda, Polydesmida, Paradoxosomatidae) in the Fauna of Vietnam, with Descriptions of Three New Species, Zoological Studies 58 (14), pp. 1-31 : 4-5

Hylomus cattienensis ( Nguyen, Golovatch & Anichkin, 2005) ( Figs. 1 , 3−4 )

Desmoxytes cattienensis Nguyen, Golovatch & Anichkin, 2005: 252−254 , figs. 6−13.

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

Material examined: 1 male (IEBR-27) Dong Nai Province, Cat Tien NP, forest, 23 September 2004, coll. Anh D. Nguyen; 1 male, 1 female (IEBR-40) same data, but 24 September 2004.

Diagnosis: The species can be distinguished from its congeners by the combination of the following characters: colouration pink to reddish; paraterga antler-shaped; metaterga with a row of 1 + 1 short setae; male leg femora unmodified; epiproct modified with several setiferous knobs ( Fig. 3 ); gonopod suberect; femorite, solenomere and solenophore subequal in length; postfemoral region not extremely short; tip of lamina medialis pointed ( Fig. 4 ).

Previous records: Dong Nai Province (Cat Tien National Park) ( Nguyen et al. 2005).

Distribution: Only known from Vietnam.

Figures

Fig. 1. Distribution of Hylomus species in mainland Vietnam. 1: Hoang Lien National Park (Sa Pa, Lao Cai Province); 2: Nam Xay Commune (Van Ban District, Lao Cai Province); 3: Duc Xuan Commune (Bac Quang District, Ha Giang Province); 4: Xuan Son National Park (Phu Tho Province); 5: Tam Dao (Vinh Phuc Province); 6: Cuc Phuong National Park (Ninh Binh Province); 7: Phong Nha – Ke Bang National Park (Quang Binh Province); 8: Lien Chieu District (Da Nang Province); 9: Ba Na National Park (Da Nang Province); 10: Lo Xo Pass (Kon Tum Province); 11: Ngoc Linh Mt. (Kon Tum Province); 12: Kon Chu Rang Natural Reserve (Gia Lai Province); 13: Buon Ho District (Dak Lak Province); 14: Hon Ba Mt. (Khanh Hoa Province); 15: Phan Rang (Ninh Thuan Province); 16: Cat Tien National Park (Dong Nai Province).

Fig. 3. Hylomus cattienensis (Nguyen, Golovatch & Anichkin, 2005) from Cat Tien National Park. Anterior part, lateral view (A), dorsal view (B), ventral view (C); body rings 10−12, dorsal view (D), lateral view (E); posterior part, lateral view (F), ventral view (G); gonopods, ventral view (H); sternite 5, ventral view (I). Anterior part, lateral view (A), dorsal view (B), ventral view (C); body rings 10−12, dorsal view (D), lateral view (E); posterior part, lateral view (F), ventral view (G); gonopods, ventral view (H); sternite 5, ventral view (I). No scale bars were inserted while taking photographs for this figure. This figure emphasises colouration, shapes of paraterga (Pa), metaterga (Me), head (He), collum (Co), gonopods (Go), sternal tubercles (st), epiproct (Epi) and hypoproct (Hy).

Fig. 4. Hylomus cattienensis (Nguyen, Golovatch & Anichkin, 2005) from Cat Tien National Park. Right gonopod, lateral view (A), mesal view (B). Scale bar = 0.5 mm.