Hyleoglomeris, Verhoeffi, 1910

Nguyen, Anh D., Eguchi, Katsuyuki & Hwang, Ui W., 2019, Two new pill millipedes (Diplopoda: Glomerida: Glomeridae) from high mountains of Vietnam, Journal of Natural History 53 (21), pp. 1369-1384 : 1381-1382

A key to Hyleoglomeris species from Vietnam

- Body largely or entirely unpigmented. Troglobites ................................................................... 2 Body well pigmented. Non-troglobites ........................................................................................... 4

- Body length ca. 6.0 mmı width of second tergum ca. 3.0 mm. Thoracic shield with six transverse striae. Telopodite with subquadrate syncoxital lobe ............ ............ H. spelaea Body length ca. 8.5 – 10.0 mmı width of second tergum ca. 4.0 – 4.1 mm. Thoracic shield with 7 or more transverse striae. Telopodite with subtrapeziform syncoxital lobe ..... 3

- Syncoxital lobe broadly subtrapeziformı slightly concave. Syncoxital horns without an apical seta ............................................................. ............................................................. H. cavernicola Syncoxital lobe not broadly subtrapeziformı not concave. Syncoxital horns with an apical seta ............................................................... ............................................................... H. speophila

- Coloration pattern annulated. Leg 17 3-segmented. Central Vietnam..... ..... H. colorata Coloration pattern not annulated. Leg 17 4-segmented. Southern and Northern Vietnam.......................................................................................................................................................... 5

- Syncoxital lobe subtrapeziformı slightly concave medially .................................................... 6 Syncoxital lobe variable in shape but not subtrapeziform .................................................... 8

- Thoracic shield with dark spots. Terga 3 – 11ı each with 3 rows of large yellow spots .... ................................................................................................................................................. H. triangulifera Thoracic shield and terga 3 – 11ı each with two large spots strongly contrasting with the background. ................................................................................................................................................. 7

- Tergal spots blackishı strongly contrasting with yellow-brown background. Thoracic shield with 6 – 7 transverse striaeı of which 3 – 4 cross the dorsum ..... ..... H. cattienensis Tergal spots yellow or gray-yellowı strongly contrasting dark or blackish background. Thoracic shield with 9 – 10 transverse striaeı of which 7 – 8 cross the dorsum H. robusta

- Syncoxital lobe highı subquadrate; syncoxital horns directed mesoventradı shorter than syncoxital lobe .................................................................................................................... H. fedorenkoi Syncoxital lobe not quadrate/subquadrate; syncoxital horns directed mesoventrad or ventradı longer than syncoxital lobe ................................................................................................ 9

- Syncoxital lobe concave medially to be a bifid trapeziform. Syncoxital horns directed mesoventrad; tip not truncatedı with an apical seta and a spine H. hoanglien sp. nov. Syncoxital lobe roundly trapeziform. Syncoxital horns longı directed ventrad; tip truncatedı without apical spine or seta .............................. .............................. H. fanxipan sp. nov.