Crematogaster walshi

Nothing is known about the biology of .

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

Distribution based on Regional Taxon Lists
Oriental Region: India, Sri Lanka, Vietnam. Palaearctic Region: China.

Nomenclature

 * . Crematogaster walshi Forel, 1902c: 205 (w.) INDIA (West Bengal).
 * Type-material: lectotype worker (by designation of Hosoishi & Ogata, 2012: 26), 5 paralectotype workers.
 * Type-locality: lectotype India: Bengal, Pooree (Walsh); paralectotypes with same data.
 * Type-depositories: MHNG (lectotype); MHNG, NHMB (paralectotypes).
 * Combination in C. (Orthocrema): Emery, 1922e: 132;
 * combination in C. (Mesocrema): Santschi, 1928b: 33.
 * Status as species: Forel, 1903a: 684; Bingham, 1903: 136; Forel, 1906b: 89; Forel, 1911h: 455; Emery, 1922e: 132; Menozzi, 1939a: 301 (in key); Chapman & Capco, 1951: 99; Bolton, 1995b: 165; Mathew & Tiwari, 2000: 328; Guénard & Dunn, 2012: 43; Hosoishi & Ogata, 2012: 26 (redescription); Bharti, Guénard, et al. 2016: 37; Dias, R.K.S. et al. 2020: 73.
 * Distribution: India, Sri Lanka.

Worker
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, worker) (by present designation) and five paralectotype workers from INDIA: Pooree, Bengale [Puri, Bengal] (Walsh) (MHNG, ) [examined].

References based on Global Ant Biodiversity Informatics

 * Bharti H. 2001. Check list of ants from north-west India I. Uttar Pradesh Journal of Zoology 21(2): 163-167.
 * Forel A. 1911. Sur le genre Metapone n. g. nouveau groupe des Formicides et sur quelques autres formes nouvelles. Rev. Suisse Zool. 19: 445-459.
 * Ghosh S. N., S. Sheela, B. G. Kundu, S. Roychowdhury, and R. N. Tiwari. 2006. Insecta: Hymenoptera: Formicidae. Pp. 369-398 in: Alfred, J. R. B. (ed.) 2006. Fauna of Arunachal Pradesh. (Part -2). [State Fauna Series 13.]. New Delhi: Zoological Survey of India, iv + 518 pp.
 * Guénard B., and R. R. Dunn. 2012. A checklist of the ants of China. Zootaxa 3558: 1-77.
 * Pajni H. R., and R. K. Suri. 1978. First report on the Formicid fauna (Hymenoptera) of Chandigarh. Res. Bull. (Science) Punjab University 29: 5-12.
 * Tak N. 2008. Ants of Rajasthan. Conserving Biodiversity of Rajasthan Zool. Surv. India. 149-155.
 * Tak N. 2009. Ants Formicidae of Rajasthan. Records of the Zoological Survey of India, Occasional Paper No. 288, iv, 46 p
 * Tak N. 2010. Insecta: Hymenoptera: Formicidae. Zool. Surv. India, Fauna of Ranthambore National Park, Conservation Area Series 43: 133-144.
 * Tak N., and S. L. Kazmi. 2011. On a collection of Insecta: Hymenoptera: Formicidae from Uttarakhand. Rec. zool. Surv. India : 111(2) : 39-49.