Hylomus pilosus ( Attems, 1937 )

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 : 9-10

Hylomus pilosus ( Attems, 1937)

( Figs. 1 , 11−12 )

Centrodesmus pilosus Attems, 1937: 124−125 , figs. 160−161; Attems 1938: 238−240, figs. 71−74.

Pratinus pilosus: Jeekel, 1964: 63 ; Jeekel 1968: 61.

Desmoxytes pilosa: Golovatch & Enghoff 1994: 59 , figs. 66−69;

Nguyen et al. 2005: 251−252; Nguyen & Sierwald 2013: 1242; Likhitrakarn et al. 2015: 495, figs. 9−10.

Hylomus pilosus: Jeekel, 1980: 658 ; Srisonchai et al. 2018a: 11.

Material examined: 1 male, 1 female (IEBR-38) Khanh Hoa Province, Hon Ba Mt, primary forest, 1,300 m, 6 April 2003, coll. Anh D. Nguyen; 1 female (IEBR-65) same data, but 15−24 April 2006, coll. Anh D. Nguyen; 4 males, 1 female (IEBR-39) Dong Nai Province, Cat Tien National Park, forest, 23−29 September 2004, coll. Anh D. Nguyen, S.I. Golovatch and A.E. Anichkin; 1 male (IEBR-85) same locality, forest, on the leaves, 26−27 July 2009, coll. Anh D. Nguyen.

Diagnosis: The species can be recognised by its pink to red colouration; paraterga being antler-shaped; metaterga having numerous microsetae and a row of 4 + 4 posterior spines; epiproct modified, with evident setiferous knobs near tip ( Fig. 11 ); gonopod femorite slightly expanded distad; solenomere long ( Fig. 12 ).

Previous records: Ninh Thuan Province (Phan Rang); Dak Lak Province; Khanh Hoa Province (Hon Ba Mt.); Dong Nai Province ( Attems 1937; Golovatch and Enghoff 1994; Nguyen et al. 2005).

Distribution: Only known from Vietnam. The species is widely distributed in southern 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. 11. Hylomus pilosus (Attems, 1937) from Cat Tien National Park. Anterior part, dorsal view (A), lateral view (B), ventral view (C). Midbody part, dorsal view (D). Posterior part, dorsal view (E), ventral view (F). No scale bars were inserted while taking photographs for this figure. This figure emphasises colouration, shapes of head (He), collum (Co), paraterga (Pa), metaterga (Me), sterna (Ste), epiproct (Epi) and hypoproct (Hy).

Fig. 12. Hylomus pilosus (Attems, 1937) from Cat Tien National Park. Right gonopod, lateral view (A), mesal view (B).