Propodilobus pingorum

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Propodilobus pingorum
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Propodilobus
Species: P. pingorum
Binomial name
Propodilobus pingorum
(DuBois, 2000)

Propodilobus pingorum casent0171177 p 1 high.jpg

Propodilobus pingorum casent0171177 d 1 high.jpg

Specimen Labels


Collected as part of a soil core in mixed dipterocarp forest, in Berlese Funnel extractions of leaf mold and from winkler sampling of leaf litter. Little else is known about this species or genus. It is only known from the worker caste.


Branstetter (2009) - Propodilobus can be distinguished from Stenamma by the reduced palp formula (3,2 versus 4,3), smoothly convex anterior clypeal margin, distinct 3-segmented antennal club (ACI 74-75 versus 60-70), and elongate propodeal lobes. In addition, the postpetiole is broader than long and the scape and funiculus of Propodilobus have a more robust appearance than in Stenamma.

Propodilobus may be confused with Lordomyrma since Lordomyrma is morphologically diverse and currently lacks an adequate diagnosis. It is possible that when a more comprehensive morphological review of Lordomyrma is undertaken or the phylogenetic position of Propodilobus is tested with molecular data, Propodilobus will be synonymized under Lordomyrma or a related genus. Despite this, from the diagnoses listed in Sarnat (2006) and Taylor (2009), Propodilobus can be distinguished from Lordomyrma by its lack of longitudinal carinae on the clypeus, lack of scrobes and frontal carinae, the presence of an elongate petiolar peduncle, and the presence of elongate propodeal lobes.


Borneo (Sarawak, Malaysia)

Latitudinal Distribution Pattern

Latitudinal Range: 4.95° to 1.33°.

Tropical South

Distribution based on Regional Taxon Lists

Indo-Australian Region: Borneo, Indonesia, Malaysia (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb



Known only from the worker caste.


The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • orientale. Stenamma orientale DuBois, 1998b: 308, figs. 41-43, 210-212 (w.) MALAYSIA (Sarawak). [Junior primary homonym of orientalis Emery, 1898c: 143.] Replacement name: pingorum DuBois, 2000: 40.
  • pingorum. Stenamma pingorum DuBois, 2000: 40. Replacement name for orientale DuBois, 1998b: 308. [Junior primary homonym of orientalis Emery, 1898c: 143.] Combination in Propodilobus: Branstetter, 2009: 55.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.


Type Material

Brandstetter (2009) - Holotype worker and paratype workers, MALAYSIA: Sarawak, First Division, Semengoh Forest Reserve, 19 km SW Kuching (1.33ºN, 110.20ºW) (2 km S 10th mile Bazaar, on Kuching-Penrissen Road), 28–31 May 1968, R.W. Taylor, RWT-68.196, leaf mould berlesate in rainforest [Holotype and paratype workers in Australian National Insect Collection examined.]


References based on Global Ant Biodiversity Informatics

  • Branstetter M. G. 2009. The ant genus Stenamma Westwood (Hymenoptera: Formicidae) redefined, with a description of a new genus Propodilobus. Zootaxa 2221:41-57.
  • DuBois M. B. 2000. Stenamma pingorum: replacement name for Stenamma orientale (Hymenoptera: Formicidae). Sociobiology 36: 40.
  • DuBois, M. B. "A revision of the ant genus Stenamma in the Palaeartic and Oriental regions." Sociobiology 32 (1998): 193-403.
  • Pfeiffer M., and D. Mezger. 2012. Biodiversity Assessment in Incomplete Inventories: Leaf Litter Ant Communities in Several Types of Bornean Rain Forest. PLoS ONE 7(7): e40729. doi:10.1371/journal.pone.0040907
  • Pfeiffer M.; Mezger, D.; Hosoishi, S.; Bakhtiar, E. Y.; Kohout, R. J. 2011. The Formicidae of Borneo (Insecta: Hymenoptera): a preliminary species list. Asian Myrmecology 4:9-58