Crematogaster walshi

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Crematogaster walshi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Crematogaster
Species: C. walshi
Binomial name
Crematogaster walshi
Forel, 1902

Crematogaster walshi casent0908374 p 1 high.jpg

Crematogaster walshi casent0908374 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of Crematogaster walshi.


Hosoishi and Ogata (2012) - This species is distinct in having the strongly bilobed postpetiole.

Keys including this Species


Distribution based on Regional Taxon Lists

Oriental Region: India (type locality), Vietnam.
Palaearctic Region: China.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb




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

  • walshi. Crematogaster walshi Forel, 1902c: 205 (w.) INDIA. Combination in C. (Orthocrema): Emery, 1922e: 132; in C. (Mesocrema): Santschi, 1928b: 33. See also: Hosoishi & Ogata, 2012: 26.

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 0.72-0.93; HL 0.76-0.92; CI 93-103; SL 0.49-0.58; SI 62-69; EL 0.13-0.17; PW 0.42-0.53; WL 0.83-1.03; PSL 0.04-0.08; PtL 0.21-0.27; PtW 0.21-0.27; PtH 0.13-0.17; PpL 0.13-0.18; PpW 0.2-0.26; PtHI 59-68; PtWI 93-105; PpWI 139-162; WI 87-100 (Lectotype and five paralectotype 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 convex in dorsal view. Metanotal groove concave in lateral view. Propodeal spines developed, but their length variable. Anterior margin of metapleural gland bulla exceeding anterior margin of propodeal spiracle.

Petiole in dorsal view broader anteriorly than posteriorly in smaller workers, broader at middle portion in larger workers. Postpetiole strongly bilobed behind without a distinct longitudinal median sulcus. Subpetiolar and subpostpetiolar processes undeveloped.

Clypeus relatively smooth, 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. Mesopleuron weakly sculptured, but the higher portion with longitudinal rugulae 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 (top specimen of three on one pin, Musee d'Histoire Naturelle Genève worker) (by present designation) and five paralectotype workers from INDIA: Pooree, Bengale [Puri, Bengal] (Walsh) (MHNG, Naturhistorisches Museum, Basel) [examined].


  • Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B: 95-206 (page 132, Combination in C. (Orthocrema))
  • Forel, A. 1902c. Myrmicinae nouveaux de l'Inde et de Ceylan. Rev. Suisse Zool. 10: 165-249 (page 205, worker described)
  • Hosoishi, S. & Ogata, K. 2012. Revision of the Crematogaster brevis complex in Asia (Hymenoptera: Formicidae). Zootaxa. 3349:18-30.
  • Santschi, F. 1928b. Nouvelles fourmis de Chine et du Turkestan Russe. Bull. Ann. Soc. Entomol. Belg. 68: 31-46 (page 33, Combination in C. (Mesocrema))