Rhopalomastix Forel, 1900
publication ID |
https://doi.org/ 10.5852/ejt.2021.739.1271 |
publication LSID |
lsid:zoobank.org:pub:81383BD5-6040-4156-BD09-A2704E5D9DA7 |
DOI |
https://doi.org/10.5281/zenodo.4614550 |
persistent identifier |
https://treatment.plazi.org/id/3D7BFE0A-FF81-FFEB-FDD6-F922FA9CFBE1 |
treatment provided by |
Plazi |
scientific name |
Rhopalomastix Forel, 1900 |
status |
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Genus Rhopalomastix Forel, 1900 View in CoL
Rhopalomastix Forel, 1900: 24 View in CoL .
Type species: Rhopalomastix rothneyi Forel, 1900 View in CoL , by monotypy.
Rhopalomastix View in CoL in Myrmicinae View in CoL , Solenopsidini View in CoL – Wheeler 1910: 140.
Rhopalomastix View in CoL in Myrmicinae View in CoL , Melissotarsini View in CoL – Emery 1914: 40; 1922: 118. — Forel 1917: 242. — Wheeler 1922: 661. — Bolton 2003: 72.
Rhopalomastix View in CoL in Myrmicinae View in CoL , Crematogastrini View in CoL – Ward et al. 2015: 71, 77.
For diagnosis of the workers in the genus Rhopalomastix , refer to Bolton (2003) and Wang et al. (2018b). For diagnoses of the queen and male of the same genus, see Wang et al. (2018b).
Synoptic list of species in Thailand
Rhopalomastix impithuksai Wang & Jaitrong sp. nov.
Rhopalomastix javana Wheeler, 1929
Rhopalomastix johorensis Wheeler, 1929
= Rhopalomastix janeti Donisthorpe, 1936
Rhopalomastix parva Wang & Jaitrong sp. nov.
Rhopalomastix robusta Wang & Jaitrong sp. nov.
Key to Thai species based on the worker caste
1. External face of mandible other than narrow strip next to masticatory margin with distinct striations ( Fig. 2a–b View Fig ); extent and intensity of striations variable. Median clypeal area carinulate, supraclypeal area with dark-pigmented longitudinal carinae ................................................................................ 2
– External face of mandible other than narrow strip next to masticatory margin largely smooth and shiny ( Fig. 2c–e View Fig ). Median clypeal area and supraclypeal area with varying forms of sculpture but never with multiple dark-pigmented longitudinal carinae ................................................................ 3
2. Striations on dorsum of head uniformly dense from frontal lobes to posterior margin; relatively large species (TL 2.24–3.16), total length of smallest worker> 2 mm. Large worker with head blackish brown, and either as long as wide or wider than long (CI 100–103) .................................................. ................................................................................................... R. robusta Wang & Jaitrong sp. nov.
– Striations on dorsum of head weaker and more fragmented in posterior half; relatively smaller species (TL 1.84–2.93), total length of smallest worker <2 mm. Worker (of all sizes) with head dark brown, but never blackish, always longer than wide (CI 94–96) ....................................................... ............................................................................................ R. impithuksai Wang & Jaitrong sp. nov.
3. Head distinctly much longer than wide (CI 84–87); anterior margin of pronotal disc (excluding the collar) strongly convex with roundly angulate median point. Relatively small species (TL 1.85– 2.25) ............................................................................................. R. parva Wang & Jaitrong sp. nov.
– Head not distinctly longer than wide (CI 87–96); anterior margin of pronotal disc (excluding the collar) broadly and often weakly convex with no angular median point ......................................... 4
4. Propodeal junction in lateral view distinct and roundly obtuse; propodeal dorsum differentiated from posterior declivity by weakly marginate angular edge. Posterolateral corner of propodeal dorsum angulate; posterior propodeal face overall weakly marginate. Anterior clypeal face in profile weakly and broadly convex ..................................................................................... R. javana Wheeler, 1929
– Propodeal junction in lateral view indistinct and broadly rounded, propodeal dorsum rounding smoothly into and not differentiated from posterior declivity by marginate angular edge. Posterolateral corner of propodeal dorsum usually indistinct, sometimes bluntly and shallowly rounded; posterior propodeal face overall incompletely marginate with obscure dorsal edge. Anterior clypeal face in profile mostly flat or weakly and broadly convex ................................ R. johorensis Wheeler, 1929
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Rhopalomastix Forel, 1900
Wang, Wendy Y., Yong, Gordon W. J. & Jaitrong, Weeyawat 2021 |
Rhopalomastix
Ward P. S. & Brady S. G. & Fisher B. L. & Schultz T. R. 2015: 71 |
Rhopalomastix
Bolton B. 2003: 72 |
Emery C. 1922: 118 |
Wheeler W. M. 1922: 661 |
Forel A. 1917: 242 |
Emery C. 1914: 40 |
Rhopalomastix
Wheeler W. M. 1910: 140 |
Rhopalomastix
Forel A. 1900: 24 |