Crematogaster inflata

Specimens from Sabah were collected from secondary wet forest, in carton on a tree trunk, and from rainforest, on low vegetation.

Identification
A member of the Crematogaster inflata species-group. Hosoishi and Ogata (2009) - The bicolored pattern of yellow and red-brown is distinctive and unique to this species. This coloration is possibly a model in Batesian mimicry with other arthropods (Maruyama et al. 2003; Ito et al., 2004).

Distribution based on Regional Taxon Lists
Indo-Australian Region: Borneo, Indonesia, Malaysia, Philippines, Singapore. Oriental Region: India, Thailand.

Nomenclature

 * . Crematogaster inflatus Smith, F. 1857a: 76, pl. 2, fig. 2 (w.) SINGAPORE, BORNEO (East Malaysia: Sarawak).
 * Type-material: lectotype worker (by designation of Hosoishi & Ogata, 2009b: 23), 4 paralectotype workers.
 * Type-locality: lectotype Singapore: “Sing. 27” (A.R. Wallace); paralectotypes: with same data, and paralectotypes Malaysia: Sarawak, “Sar.”, “Sar. 9” (A.R. Wallace).
 * [Note: Hosoishi & Ogata, 2009b: 23, record only lectotype + 4 paralectotypes; but original syntypes are 8 in number: 5 in OXUM, and 3 in BMNH.]
 * Type-depositories: BMNH, OXUM.
 * Santschi, 1928h: 128 (q.).
 * Combination in C. (Physocrema): Forel, 1912f: 220.
 * Status as species: Smith, F. 1858b: 136; Mayr, 1862: 767; Mayr, 1863: 404; Roger, 1863b: 37; Mayr, 1867a: 106 (redescription); Smith, F. 1871a: 329; Mayr, 1872: 153; Mayr, 1879: 680 (in key); Emery, 1887b: 466; Dalla Torre, 1893: 82; Emery, 1900d: 691; Forel, 1903a: 682; Bingham, 1903: 145; Wheeler, W.M. 1908d: 390; Forel, 1915a: 28; Viehmeyer, 1916a: 126; Wheeler, W.M. 1919e: 75; Emery, 1922e: 140; Santschi, 1928h: 128; Donisthorpe, 1932c: 450; Menozzi, 1932d: 6; Donisthorpe, 1941l: 226 (in key); Chapman & Capco, 1951: 103; Bolton, 1995b: 154; Jaitrong & Nabhitabhata, 2005: 19; Hosoishi & Ogata, 2009a: 5 (redescription); Hosoishi & Ogata, 2009b: 23 (redescription); Pfeiffer, et al. 2011: 45; Bharti, Guénard, et al. 2016: 36; Khachonpisitsak, et al. 2020: 90.
 * Senior synonym of moorei: Hosoishi & Ogata, 2009b: 23.
 * Distribution: India, Indonesia (Java, Kalimantan), Malaysia (Peninsula, Sabah, Sarawak), Myanmar, Philippines (Luzon), Singapore, Thailand.
 * moorei. Crematogaster (Physocrema) moorei Donisthorpe, 1941l: 225 (w.) PHILIPPINES (Luzon I.).
 * Type-material: holotype worker.
 * Type-locality: Philippines: Luzon, Bagnio, 25.ii.1920, BM1922.101 (A. Moore).
 * Type-depository: BMNH.
 * Status as species: Chapman & Capco, 1951: 98; Baltazar, 1966: 251; Bolton, 1995b: 158.
 * Junior synonym of inflata: Hosoishi & Ogata, 2009b: 23.

Worker
Hosoishi and Ogata (2009) - 0.86–1.08; HL 0.85–1.05; CI 101–103; SL 0.85–0.96; SI 89–98; EL 0.20–0.22; PW 0.61–0.66; WL 1.18–1.34; PSL 0; PtL 0.32–0.38; PtW 0.23–0.27; PtH 0.16–0.19; PpL 0.18–0.20; PpW 0.24–0.30; PtHI 46–50; PtWI 67–71; PpWI 139–147; WI 106–110 (Three workers measured).

Workers polymorphic in size.

Scape exceeding posterior corner of head even for large workers.

In lateral view, pronotum convex; mesonotum and propodeum forming a single convexity. Anterior margin of pronotal collar distinctly concave in dorsal view. Metanotal groove slightly convex in dorsal median portion, not so deep and situated almost in the same line with the posterior ridge of pronotum in lateral view; thorax not strongly constricted in middle in dorsal view. In dorsal view, no longitudinal rugulae connecting between mesonotum and propodeum; the boundary distinct except for median portion. Propodeal spiracle situated near the metapleural gland orifice, the distance between them about the same as the propodeal spiracle diameter. Propodeal spines absent.

Clypeus smooth and shining without longitudinal rugulae. Integument smooth and shining.

Standing pilosity sparse, some pairs on dorsal face of head and dorsal portion of mesonotum. Dorsal face of head with appressed setae. Clypeus with abundant short and long setae. Fourth abdominal tergite with abundant appressed setae.

Body bicolored with head, promesonotum, petiole, postpetiole, gaster and legs red-brown and with metanotal and propodeal area yellow.

Type Material
Hosoishi and Ogata (2009) - LECTOTYPE worker from SINGAPORE (left worker of TYPE HYM: 1016 3-4 / 5) (by present designation) and four paralectotype workers: one paralectotype worker from SINGAPORE  and three paralectotype workers from MALAYSIA: Sarawak, Borneo  [examined].

Crematogaster inflatus

Five worker syntypes in, 3 worker syntypes in. Labelled “Sar.” “Sar. 9.” and “Sing. 27.” Sarawak and Singapore are both recorded by Smith.

References based on Global Ant Biodiversity Informatics

 * Blaimer B. B. 2012. Acrobat ants go global  Origin, evolution and systematics of the genus Crematogaster (Hymenoptera: Formicidae). Molecular Phylogenetics and Evolution 65: 421-436.
 * Chapman, J. W., and Capco, S. R. 1951. Check list of the ants (Hymenoptera: Formicidae) of Asia. Monogr. Inst. Sci. Technol. Manila 1: 1-327
 * Chung A.Y.C., and M. Mohamed. 1996. A comparative study of the ant fauna in a primary and secondary forest in Sabah, Malaysia. In Edwards, D.S. Booth, W.E. and S.C. Choy (eds). Tropical Rainforest Research. Kluwer Academic Publishers. Pp 357-366.
 * Donisthorpe H. 1941. Description of a new species of Crematogaster Lund, subgenus Physocrema Forel, with a list of, and a key to, the known species of the subgenus. Entomologist 74: 225-227.
 * Eguchi K., and S. Yamane. 2003. Species diversity of ants (Hymenoptera, Formicidae) in a lowland rainforest, northwestern Borneo. New Entomol. 52(1,2): 49-59.
 * Emery C. 1887. Catalogo delle formiche esistenti nelle collezioni del Museo Civico di Genova. Parte terza. Formiche della regione Indo-Malese e dell'Australia (continuazione e fine). [concl.]. Ann. Mus. Civ. Stor. Nat. 25(5): 427-473.
 * Emery, C.. "Catalogo delle formiche esistenti nelle collezioni del Museo Civico di Genova. Parte terza. Formiche della regione Indo-Malese e dell'Australia (continuazione e fine)." Annali del Museo Civico di Storia Naturale Giacomo Doria (Genova) (2) 5, no. 25 (1887): 427-473.
 * 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.
 * 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
 * Forel A. 1915. Fauna Simalurensis. Hymenoptera Aculeata, Fam. Formicidae. Tijdschr. Entomol. 58: 22-43.
 * Hashimoto Y., S. Yamane, and T. Itioka. 1997. A preliminary study on dietary habits of ants in a Bornean rain forest. Japanese Journal of Entomology 65(4): 688-695.
 * Hosoichi S., and K. Ogata. 2009. A taxonomic revision of the Asian endemic subgenus Physocrema of the genus Crematogaster (Hymenoptera: Formicidae). Zootaxa 2062: 15-36.
 * Hosoishi S. and K. Ogata. 2009. A check list of the ant genus Crematogaster in Asia (Hymenoptera: Formicidae). Bull. Inst. Trop. Agr. Kyushu Univ. 32: 43-83.
 * Hosoishi S., and K. Ogata. 2009. A taxonomic revision of the Asian endemic subgenus Physocrema of the genus Crematogaster (Hymenoptera: Formicidae). Zootaxa 2062: 15-36.
 * Hosoishi S.; and K. Ogata. 2009. The ant genus Crematogaster Lund, subgenus Physocrema Forel, in the Indochinese Peninsula. Asian Myrmecology 2 (2008): 1-10.
 * Hosoishi, S. and K. Ogata. 2008. The ant genus Crematogaster Lund, subgenus Physocrema Forel, in the Indochinese Peninsula (Hymenoptera: Formicidae). Asian Myrmecology 2:1-10.
 * Jaitrong W.; Nabhitabhata, J. 2005. A list of known ant species of Thailand. The Thailand Natural History Museum Journal 1(1): 9-54.
 * Katayama M., K. Kishimoto-Yamada, H. O. Tanaka, T. Endo, Y. Hashimoto, Sk. Yamane, and T. Itioka. 2015. Negative correlation between ant and spider abundances in the canopy of a Bornean tropical rain forest. Biotropica (in press).
 * Menozzi, C. 1932. Formiche dell'Isola di Nias. Misc. Zool. Sumatr. 65: 1-13
 * Mohamed M. 1995. A preliminary list of ants (Hymenoptera: Formicidae) of the Tawau Hills Park, Sabah. In: Ghazally Ismail  et al.  (eds.),  Tawau  Hills Park,  Sabah,  Pelanduk Pub.  Pp.  205-213.
 * Pfeiffer M., D. Mezger, and J. Dyckmans. 2013. Trophic ecology of tropical leaf litter ants (Hymenoptera: Formicidae) - a stable isotope study in four types of Bornean rain forest. Myrmecological News 19: 31-41.
 * 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
 * Robson Simon Ant Collection, 05-Sept-2014
 * Santschi F. 1928. Fourmis de Sumatra, récoltées par Mr. J. B. Corporaal. Tijdschrift voor Entomologie 71: 119-140.
 * Sitthicharoenchai D., and N. Chantarasawat. 2006. Ant species diversity in the establishing area for Advanced Technology Institute at Lai-Nan Sub-district, Wiang Sa district, Nan Province, Thailand. The Natural History Journal of Chulalongkorn University 6(2): 67-74
 * Smith, F.. "Catalogue of the hymenopterous insects collected at Sarawak, Borneo; Mount Ophir, Malacca; and at Singapore, by A. R. Wallace." Journal of the Proceedings of the Linnean Society of London, Zoology 2 (1857): 42-88.
 * Suriyapong Y. 2003. Study of ground dwelling ant populations and relationship to some ecological factors in Sakaerat environmental research station, Nakhon Ratchasima. PhD thesis Suranaree University of Technology 203 pages.
 * Tiwari R.N., B.G. Kundu, S. Sheela, and S. N. Ghosh. 2004. Insecta: Hymenoptera: Formicidae. Alfred, J.R.B. [Ed.], Fauna of Manipur, part - 2 (insects). State fauna series 10. Zool.Surv.India.i-v, 1-625. Chapter pagination: 605-625.
 * Trainor C.R., and A.N. Andersen. 2010. The ant fauna of Timor and neighbouring islands: potential bridges between the disjunct faunas of South East Asia and Australia. Australian Journal of Zoology 58: 133-144.
 * Wheeler W. M. 1919. The ants of Borneo. Bulletin of the Museum of Comparative Zoology 63:43-147.
 * Widodo E.S., M. Mohamed, and Y. Hashimoto. 2001. Canopy ant diversity assessment in the fragmented rainforest of Sabah, East Malaysia. Nature and Human activities 6: 13-23.
 * Yamane S.; Nona, A. R. 1994. Ants from Lambir Hills National Park, Sarawak. Pp. 222-226 in: Inoue, T.; Hamid, A. A. (eds.) 1994. Plant reproductive systems and animal seasonal dynamics. Long-term study of dipterocarp forests in Sarawak. Kyoto: Center for Ecological Research, Kyoto University, vii + 255 pp.