Crematogaster subnuda discinodis Emery, 1893

Hamer, Matthew T., Lee, Jonathan Hon Chung, Tse, Cheung Yau Leo, Silva, Thiago S. R. & Guénard, Benoit, 2022, Remarkable diversity in a little red dot: a comprehensive checklist of known ant species in Singapore (Hymenoptera: Formicidae) with notes on ecology and taxonomy, Asian Myrmecology (e 015006) 15, pp. 1-152 : 78

publication ID	https://doi.org/10.20362/am.015006
DOI	https://doi.org/10.5281/zenodo.15474275
persistent identifier	https://treatment.plazi.org/id/03B68783-3118-FFE8-FF0F-7BA3FB17FDF7
treatment provided by	Felipe
scientific name	Crematogaster subnuda discinodis Emery, 1893
status

Treatment

Crematogaster subnuda discinodis Emery, 1893 View in CoL

Material examined. Kranji Road, 1.42638, 103.75413, 7 Sep 2016, G.W. Yong leg., ZRC _ HYM_0001766; Labrador Hill, 9 May 1985, D.H. Murphy leg., ZRC _HYM_0000704; Pulau Semakau , Apr-Oct 2012, J. Puniamoorthy et al. leg., mangroves, malaise trap, ZRC _BDP (multiple); Pulau Ubin , Apr-Oct 2012, J. Puniamoorthy et al. leg., mangroves, malaise trap, ZRC _BDP (multiple); Sungei Buloh Wetland Reserve , Apr-Oct 2012, J. Puniamoorthy et al. leg., malaise trap, ZRC _BDP (multiple); University Hall ( NUS), 1.29711, 103.77658, M.S. Foo & W. Wang leg., malaise trap, ZRC _BDP (multiple) GoogleMaps .

Material not physically examined. Syntype – CASENT0904488, ANTC24399 ( MSNG) .

Literature. Type – Emery (1893) [as Crematogaster discinodis ]. Wang et al. (2018a).

Localities. Kranji Road; Labrador Hill; Pulau Semakau; Pulau Ubin; Sungei Buloh; University Hall ( NUS).

Habitat/Ecology. This species was often found in both mature and young secondary forests in Singapore, including waste woodland secondary forest, frequently fragments in semi-urban or urban settings; nests have been found in fallen twigs. Individuals have also been collected in fairly large numbers from mangroves using malaise traps.

Remarks. Type locality in Singapore. Crematogaster subnuda discinodis appears similar to C. subnuda Mayr, 1879 , but can be distinguished by its largely smooth and shiny integument, and overall lighter body colours, relative to the more rugulose and darker body of the C. subnuda type.

However, Emery (1900) observed that samples of C. subnuda collected from parts of Indonesia could vary widely in terms of head and mesosomal sculpture, and also body colour. It is not stated if this variation occurred between or within different colony samples. If extreme variation does occur between intranidal workers, it would support the synonymy of subspecies discinodis under C. subnuda . At the time of writing, we do not have adequate material (i.e., colony series of C. subnuda from a broader geographic range) necessary for evaluation. Thus, at this point we refrain from making any unjustified taxonomic changes to the current subspecies.