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

Subspecies
Synonyms

Nothing is known about the biology of Crematogaster treubi.

Identification

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

Distribution

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

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • treubi. Crematogaster treubi Emery, 1896f: 246 (w.) INDONESIA (Java). Combination in C. (Orthocrema): Emery, 1922e: 132; in C. (Mesocrema): Santschi, 1937e: 310. Senior synonym of sic: Emery, 1922e: 132; of millardi, vastatrix: Hosoishi & Ogata, 2012: 25. Current subspecies: nominal plus apilis.
  • sic. Crematogaster buddhae r. sic Forel, 1907a: 24 (w.) WEST MALAYSIA. Junior synonym of treubi: Emery, 1922e: 132.
  • millardi. Crematogaster millardi Forel, 1902c: 205 (w.) MYANMAR. Viehmeyer, 1916a: 125 (q.). Combination in C. (Orthocrema): Emery, 1922e: 132; in C. (Mesocrema): Santschi, 1928b: 33. Junior synonym of treubi: Hosoishi & Ogata, 2012: 25.
  • vastatrix. Crematogaster treubi var. vastatrix Forel, 1911a: 24 (w.q.) INDONESIA (Java). Combination in C. (Orthocrema): Emery, 1922e: 132. 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.

Description

Worker

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

  • Emery, C. 1896f. Formicides récoltés à Buitenzorg (Java), par M. Massart. Ann. Soc. Entomol. Belg. 40: 245-249 (page 246, worker described)
  • Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B: 95-206 (page 132, Combination in C. (Orthocrema))
  • Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B: 95-206 (page 132, Senior synonym of sic)
  • Hosoishi, S. & Ogata, K. 2012. Revision of the Crematogaster brevis complex in Asia (Hymenoptera: Formicidae). Zootaxa. 3349:18-30.
  • Santschi, F. 1937e. Contribution à l'étude des Crematogaster paléarctiques. Mém. Soc. Vaudoise Sci. Nat. 5: 295-317 (page 310, Combination in C. (Mesocrema))