Crematogaster treubi

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Crematogaster treubi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Crematogaster
Species: C. treubi
Binomial name
Crematogaster treubi
Emery, 1896

Crematogaster treubi casent0193783 p 1 high.jpg

Crematogaster treubi casent0193783 d 1 high.jpg

Specimen Labels


Nothing is known about the biology of Crematogaster treubi.


A member of the Crematogaster irritabilis group. Hosoishi and Ogata (2012) - This species is similar to C. kojimai, but can be distinguished by the long and slender propodeal spines.

Slight morphological variations are found not only in the specimens collected from different localities, but also within nest series collections. Some specimens collected in Bali have shorter propodeal spines in contrast to the usual long and slender spines. The mesopleuron is relatively smooth and shining in most specimens, but especially shining in Sepilok specimens or somewhat shagreened in Pulau Sebeku specimens. These variants are treated as intraspecific variation within C. treubi until molecular data are available.

Keys including this Species


Latitudinal Distribution Pattern

Latitudinal Range: 30° to -8.423056°.

Tropical South

Distribution based on Regional Taxon Lists

Indo-Australian Region: Brunei Darussalam, Indonesia (type locality), Malaysia.
Oriental Region: Cambodia, Laos, Myanmar, Thailand.
Palaearctic Region: China.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.


Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.





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

  • treubi. Crematogaster treubi Emery, 1896f: 246 (w.) INDONESIA (Java).
    • Type-material: lectotype worker (by designation of Hosoishi & Ogata, 2012: 25), 2 paralectotype workers.
    • Type-locality: lectotype Indonesia: Java, Buitenzorg (= Bogor) (Massart); paralectotypes with same data.
    • Type-depositories: MSNG (lectotype); MHNG (paralectotypes).
    • Combination in C. (Orthocrema): Emery, 1922e: 132;
    • combination in C. (Acrocoelia): Santschi, 1928b: 34;
    • combination in C. (Mesocrema): Santschi, 1937e: 310.
    • Status as species: Emery, 1900d: 689; Emery, 1901g: 567; Emery, 1922e: 132; Stärcke, 1930: 374; Menozzi, 1935a: 106; Chapman & Capco, 1951: 99; Bolton, 1995b: 164; Terayama, 2009: 178 (in key); Hosoishi & Ogata, 2012: 25 (redescription); Jaitrong, Guénard, et al. 2016: 36; Khachonpisitsak, et al. 2020: 94.
    • Senior synonym of millardi: Hosoishi & Ogata, 2012: 25.
    • Senior synonym of sic: Forel, 1911a: 25 (in text); Emery, 1922e: 132; Bolton, 1995b: 164.
    • Senior synonym of vastatrix: Hosoishi & Ogata, 2012: 25.
    • Distribution: Brunei, Cambodia, Indonesia (Bali, Java, Kalimantan, Sulawesi, Sumatra, Sunda Strait), Malaysia (Peninsula, Sabah, Sarawak), Myanmar, Thailand.
    • Current subspecies: nominal plus apilis.
  • millardi. Crematogaster millardi Forel, 1902c: 205 (w.) MYANMAR.
    • Type-material: lectotype worker (by designation of Hosoishi & Ogata, 2012: 25), 1 paralectotype worker.
    • Type-locality: lectotype Myanmar (“Burma”): Moulmain (Hodgson); paralectotype with same data.
    • Type-depository: MHNG.
    • Viehmeyer, 1916a: 125 (q.).
    • Combination in C. (Orthocrema): Emery, 1922e: 132;
    • combination in C. (Mesocrema): Santschi, 1928b: 33.
    • Status as species: Forel, 1903a: 684; Bingham, 1903: 135; Viehmeyer, 1916a: 125; Emery, 1922e: 132; Stärcke, 1930: 374; Menozzi, 1935a: 112 (in key); Chapman & Capco, 1951: 98; Bolton, 1995b: 157; Guénard & Dunn, 2012: 42.
    • Junior synonym of treubi: Hosoishi & Ogata, 2012: 25.
  • sic. Crematogaster buddhae r. sic Forel, 1907a: 24 (w.) WEST MALAYSIA.
    • Type-material: syntype workers (number not stated).
    • Type-locality: Malaysia: Malacca, Kuala Lumpur (L. Biró).
    • Type-depositories: HNHM, MHNG.
    • Junior synonym of treubi: Forel, 1911a: 25 (in text); Emery, 1922e: 132; Bolton, 1995b: 162.
  • vastatrix. Crematogaster treubi var. vastatrix Forel, 1911a: 24 (w.q.) INDONESIA (Java).
    • Type-material: lectotype worker (by designation of Hosoishi & Ogata, 2012: 25), 7 paralectotype workers.
    • [Note: original syntype queen is not mentioned by Hosoishi & Ogata, 2012: 25.]
    • Type-locality: lectotype Indonesia: Java (Roepke); paralectotypes with same data.
    • Type-depositories: MHNG (lectotype); MHNG, NHMB (paralectotypes).
    • Combination in C. (Orthocrema): Emery, 1922e: 132;
    • combination in C. (Acrocoelia): Santschi, 1928b: 34.
    • Subspecies of treubi: Forel, 1912n: 57; Emery, 1922e: 132; Menozzi, 1935a: 113 (in key); Chapman & Capco, 1951: 99; Bolton, 1995b: 165.
    • Junior synonym of treubi: Hosoishi & Ogata, 2012: 25.

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



Hosoishi and Ogata (2012) - HW 0.51-0.74; HL 0.52-0.71; CI 94-104; SL 0.34-0.51; SI 65-74; EL 0.1-0.15; PW 0.28-0.44; WL 0.57-0.81; PSL 0.04-0.1; PtL 0.15-0.22; PtW 0.16-0.22; PtH 0.1-0.14; PpL 0.1-0.15; PpW 0.15-0.19; PtHI 55-78; PtWI 91-111; PpWI 113-150; WI 81-100 (Seventeen workers measured).

Workers monomorphic.

Compound eyes not projecting from lateral margin of head, the outer margin of eye almost flush with head capsule in full face view. Scape not reaching posterior corner of head, the scape with standing setae.

Anterior margin of pronotal collar almost straight or slightly concave in dorsal view. Metanotal groove shallow. Propodeal spines long and slender, their length longer than the diameter of propodeal spiracles. Anterior margin of metapleural gland bulla reaching or exceeding anterior margin of propodeal spiracle. Petiole in dorsal view broader anteriorly than posteriorly. Postpetiole weakly bilobed, without distinct longitudinal median sulcus. Subpetiolar and subpostpetiolar processes undeveloped.

Clypeus relatively smooth and shining, but with feeble rugulae. Dorsal face of mesosoma almost smooth and shining. Dorsolateral face of pronotum smooth in dorsal view. Lateral surface of pronotum smooth and shining. Lateral surface of mesonotum with rugulae. Mesopleuron relatively smooth and shining, but the anterodorsal and lower portions weakly sculptured. Longitudinal rugulae developed anteriorly and posteriorly of the metanotal groove in lateral view.

Dorsal face of head, clypeus and mesosoma with abundant standing setae. Fourth abdominal tergite with sparse standing setae.

Type Material

Hosoishi and Ogata (2012) - LECTOTYPE worker (Museo Civico di Storia Naturale, Genoa worker) (by present designation) and two paralectotype workers from INDONESIA: Java (M. Massart) (Musee d'Histoire Naturelle Genève) [examined].

Crematogaster treubi type material
Lectotype designated by Hosoishi & Ogata, 2012: 25.

Crematogaster millardi type material
Lectotype designated by Hosoishi & Ogata, 2012: 25.

Crematogaster treubi vastatrix type material
Lectotype designated by Hosoishi & Ogata, 2012: 25.


References based on Global Ant Biodiversity Informatics

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  • Dias R. K. S. 2002. Current knowledge on ants of Sri Lanka. ANeT Newsletter 4: 17- 21.
  • Emery C. 1901. Formiciden von Celebes. Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere 14:565-580.
  • Emery, C.. "Formiche raccolte da Elio Modigliani in Sumatra, Engano e Mentawei." Annali del Museo Civico di Storia Naturale Giacomo Doria (Genova) (2) 20, no. 40 (1900): 661-722.
  • Emery, C.. "Formicides recoltes a Buitenzorg (Java), par M. Massart." Annales de la Société Entomologique de Belgique 40 (1896): 245-249.
  • Fontanilla A. M., A. Nakamura, Z. Xu, M. Cao, R. L. Kitching, Y. Tang, and C. J. Burwell. 2019. Taxonomic and functional ant diversity along tropical, subtropical, and subalpine elevational transects in southwest China. Insects 10, 128; doi:10.3390/insects10050128
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  • Forel A. 1912. Einige neue und interessante Ameisenformen aus Sumatra etc. Zool. Jahrb. Suppl. 15: 51-78.
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