Hylomus Cook & Loomis, 1924
publication ID |
https://doi.org/ 10.6620/ZS.2019.58-14 |
DOI |
https://doi.org/10.5281/zenodo.8065871 |
persistent identifier |
https://treatment.plazi.org/id/03B987C4-FFEB-AE46-FC99-F979FA0FA9A4 |
treatment provided by |
Valdenar |
scientific name |
Hylomus Cook & Loomis, 1924 |
status |
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Genus Hylomus Cook & Loomis, 1924 View in CoL View at ENA
Hylomus Cook & Loomis, 1924: 105 View in CoL ; Attems 1937: 126; Jeekel 1968: 51; Jeekel 1980: 655; Srisonchai et al. 2018a: 15. Synonymized with Desmoxytes View in CoL by Golovatch & Enghoff (1994: 46), but re-validated by Srisonchai et al. (2018a).
Type species: Hylomus draco Cook & Loomis, 1924 View in CoL , by original designation.
Diagnosis: The genus can be recognised by a combination of characters: small to large size (12−35 mm long); often brightly coloured; paraterga strongly to exceedingly well developed, wing-, spine- and antler-shaped; metazonal surface often more or less roughly granulate, rarely smooth; epiproct of telson sometimes modified with hypertrophied setiferous tubercles near tip; male leg femora 5/6/7/9 often inflated or humped ventrally; gonopod suberect, seldom subfalcate; solenophore and solenomere usually shortened.
Remarks: The genus is widely distributed in southern China and Vietnam. Few species are found in Laos and Thailand. The distribution of the genus Hylomus in Vietnam is shown in figure 1.
Key to species of the genus Hylomus species in Vietnam
1. Paraterga wing-shaped ........................................... H. spectabilis View in CoL
- Paraterga antler- or spine-shaped ( Figs. 3 View Fig , 7 View Fig , 9 View Fig , 11 View Fig ) ................... 2
2. Paraterga antler-shaped ( Figs. 3 View Fig , 7 View Fig , 11 View Fig ) ...................................... 3
- Paraterga spine-shaped ( Fig. 9 View Fig ) ................................................ 11
3. Epiproct unmodified, without conspicuous setiferous knobs near tip ( Fig. 18 View Fig A−B) ......................................................................... 4
- Epiproct modified, with several evident setiferous knobs near tip ( Figs. 7F View Fig , 28B View Fig )............................................................................ 7
4. Metaterga smooth, more or less shining. Male femora unmodified ......................................................................................... H. asper View in CoL
- Metaterga rough, dull, granular. Male femora modified, inflated. ..................................................................................................... 5
5. Metaterga with more than 4 + 4 posterior setiferous spines on midbody segments ( Fig. 17A View Fig ). Body pale or weakly pigmented. Lamina lateralis of gonopod solenophore with densely setose region ( Figs. 19−20 View Fig View Fig ) ................................................... H. songoku
- Metaterga with less than 4 + 4 posterior setiferous spines on midbody segments. Body pigmented. Lamina lateralis of gonopos solenophore without densely setose region ................................ 9
6. Metaterga with 3 + 3 posterior setiferous spines. Male femora 6, 7 and 9 humped ventrally. Fifth sternum with a pair of tubercles between coxae 4 ....................................................... H. cervarius View in CoL
- Metaterga with 2 + 2 posterior setiferous spines. Male femora 6 and 7, sometime femur 5 modified, each with a large hump on ventral side. Fifth sternum with either rectangular process or bifid trapeziform lamina between coxae 4.......................................... 7
7. Body light or darkish brown. Fifth sternum with a bifid trapeziform lamina between coxae 4.......................................... 8
- Body reddish or pinkish. Fifth sternum with four round tubercles on a prominent, elevated, rectangular lamina between male coxae 4 .................................................................................. H. enghoffi View in CoL
8. Male femora 6, 7 humped ventrally ( Fig. 28D View Fig ). Tip of solenophore broadly rounded lobuliform ( Figs. 29−30 View Fig View Fig ) ............... ........................................................................................ H. namek
- Male femora 6, 7, sometimes 5, humped ventrally ( Fig. 23B View Fig ). Tip of solenophore acute ( Figs. 24−25 View Fig View Fig ) ............................. H. saiyans
9. At least 3 + 3 posterior metatergal spines on metaterga........... 10 - Only 1 + 1 posterior poor setae on metaterga ( Fig. 3B, D View Fig ) ........... ............................................................................... H. cattienensis View in CoL
10. Colour pink to red. Metaterga with numerous microsetae, and 4 + 4 posterior spines ( Fig. 4A, B, D, E View Fig ) ............................ H. pilosus View in CoL
- Colour dark to castaneous brown. Metaterga with microgranulation, and 3 + 3 posterior spines ............ H. proximus View in CoL
11. A row of 1 + 1 posterior spines on metaterga. Gonopod subfalcate, femorite slightly curved; solenomere long .................. .................................................................................... H. specialis View in CoL
- A row of 2 + 2 posterior tubercles/spines on metaterga. Gonopod falcate; solenophore short, pointed terminally ......................... 12
12. Fifth sternum with two independent setiferous tubercles between coxae 4. Antenna long and slender.............................. H. grandis View in CoL
- Fifth sternum with a bifid setiferous trapeziform lamina between coxae 4. Antenna short and stout ( Fig. 9B View Fig ) ................... H. holstii
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Hylomus Cook & Loomis, 1924
Nguyen, Anh D., Nguyen, Manh-Ha, Nguyen, Thu-Anh T. & Phung, Hong-Luong T. 2019 |
Hylomus
Cook & Loomis 1924: 105 |
Desmoxytes
Chamberlin 1923 |