Hylomus spectabilis ( 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 : 13

Hylomus spectabilis ( Attems, 1937)

( Figs. 1 , 15 )

Centrodesmus spectabilis Attems, 1937: 124 , fig. 159; Attems 1938:

235−238, figs. 65−70. Pratinus spectabilis: Jeekel 1964: 63 ; Jeekel 1968: 61. Desmoxytes spectabilis: Golovatch & Enghoff 1994: 61 ; Nguyen et

al. 2005: 255−256, figs. 20−25; Nguyen & Sierwald 2013: 1242;

Likhitrakarn et al. 2015: 498, figs. 11−12. Hylomus spectabilis: Jeekel 1980: 658 ; Srisonchai et al. 2018a: 11.

Material examined: 1 female (IEBR-36) Da Nang Province, Ba Na National Park, forest, near stream, 26−27 April 2002, coll. Quynh & Lich; 1 male, 1 female (IEBR-37) same locality, summit, 23 April 2002, coll. Quynh & Lich; 1 female, 4 juveniles (IEBR-36) Kon Tum Province, Lo Xo pass, 80km north of Kon Tum, secondary forest, 840 m, 17 April 2004, coll. Anh D. Nguyen; 1 female (IEBR-64), same locality, pitfall trapping, 15−19 April 2002, coll. Anh D. Nguyen.

Diagnosis: The species can be distinguished from its congeners by the paraterga being wing-shaped; metaterga having two transverse rows of 2 + 2 and 1 + 1 well developed spines; the sternum 5th having two independent, round tubercles between coxae 4; gonopod being slightly expanded distad; demarcation between postfemoral region and femorite being present; spine z being well developed ( Fig. 15 ).

Previous records: Da Nang Province (Ba Na Mt.) ( Attems 1937).

Distribution: Only known from 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. 15. Hylomus spectabilis (Attems, 1937) from Ba Na – Nui Ba National Park. Left gonopod, mesal view (A), lateral view (B). Scale bar = 0.5 mm.