Crematogaster difformis Smith, 1857

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 : 75

publication ID	https://doi.org/10.20362/am.015006
DOI	https://doi.org/10.5281/zenodo.15474256
persistent identifier	https://treatment.plazi.org/id/03B68783-311F-FFEF-FF67-7EE3FC5CFE37
treatment provided by	Felipe
scientific name	Crematogaster difformis Smith, 1857
status

Treatment

Crematogaster difformis Smith, 1857 View in CoL

Material examined. Upper Peirce Reservoir, 10 Jan 2014, Sk. Yamane leg., ZRC _ HYM_0000365-366.

Material not physically examined. Lectotype and paralectotypes ( OUMNH) .

Literature. Type – Smith (1857). Viehmeyer (1916), Overbeck (1924) [both misspelt as ‘ C. deformis ’]; Hosoishi & Ogata (2009).

Localities. Ayer Terjun (archaic place name); Bukit Timah Hill; Choa Chu Kang Road; Upper Peirce Reservoir.

Habitat/Ecology. This species was found in primary or mature secondary forests in Singapore.

Remarks. Type locality in Singapore. Very similar to the more common C. sewardi , distinguished mainly by the configuration or direction of appressed hairs/setae on the first gastral tergite - in C. sewardi , the gastral hairs are all posteriorly-directed, whereas in C. difformis , hairs in the posterior section (of the tergite) are directed medially inwards towards the centre of the tergite.