Crematogaster dalyi

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

Crematogaster dalyi casent0907510 p 1 high.jpg

Crematogaster dalyi casent0907510 d 1 high.jpg

Specimen Labels

This species is only known from the type locality in India.

Identification

A member of the Crematogaster ranavalonae-group

Hosoishi (2015) - This species is similar to Crematogaster sikkimensis, but differs in having short propodeal spines.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Oriental Region: India (type locality).


Distribution based on AntMaps

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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.

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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.

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Biology

Castes

Nomenclature

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

  • dalyi. Crematogaster (Oxygyne) dalyi Forel, 1902c: 201 (w.) INDIA (Tamil Nadu).
    • Type-material: lectotype worker (by designation of Hosoishi, 2015: 77), 2 paralectotype workers.
    • Type-locality: lectotype India: Coonoor (Daly); paralectotypes with same data.
    • Type-depository: MHNG.
    • Status as species: Forel, 1903a: 683; Bingham, 1903: 138; Emery, 1922e: 157; Chapman & Capco, 1951: 100; Bolton, 1995b: 151; Tiwari, 1999: 48; Hosoishi, 2015: 76 (redescription); Bharti, Guénard, et al. 2016: 36.
    • Distribution: India.

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

Description

Worker

Hosoishi (2015) - (type workers, n = 3) HW 0.86-0.92; HL 0.85-0.87; CI 99-108; SL 0.74-0.75; SI 80-87; EL 0.16-0.18; PW 0.55-0.58; WL 1.02-1.03; PSL 0.1-0.12; PtL 0.25-0.26; PtW 0.30-0.33; PtH 0.16-0.17; PpL 0.17-0.18; PpW 0.37- 0.39; PtHI 64-65; PtWI 115-132; PpWI 217-229; WI 118-126.

Head appearing subquadratic in front view. Mandible weakly striate, with four teeth, apical and subapical teeth large, basal two teeth smaller. Scape exceeding posterior corner of head, with dense appressed setae, each of which is less than width of scape. Compound eye slightly projecting beyond lateral margin of head in full face view.

Ventrolateral katepisternal ridge indistinct posteriorly. Propodeal spine short and stout; length longer than spiracle, directed upward; dorsum as high as anterior propodeum in lateral view. Propodeal spiracle situated close to propodeal declivity in lateral view, directed laterally.

In dorsal view, shape of petiole scoop, longer than broad. Petiolar spiracle big, as wide as half of propodeal spiracle in size. Postpetiolar spiracle big and distinct, located anteriorly on lateral surface. In dorsal view, postpetiole broader than long, strongly bilobed but without longitudinal median sulcus. Postpetiole distinctly wider than petiole in dorsal view.

Integument essentially smooth and shiny. Clypeus generally smooth and shiny, but with feable rugulae. Malar region smooth and shiny. Dorsal surface of promesonotum smooth and shiny. Lateral surface of pronotum generally smooth and shiny, but with longitudinal rugulae on anterior portion. Mesopleuron and lateral propodeum generally smooth and shiny, but with weak longitudinal rugulae. Dorsal surface of propodeum smooth and shiny.

Erect pilosity absent. Dorsum of head, clypeus and mesosoma with short and appressed setae. Clypeus with one pair of longer setae on anteriormost portion, directed medially. Anterior clypeal margin with one single longer setae and two pairs of longer setae on the median portion, mixed with some shorter setae on sides. No erect seate on pronotal shoulders. Posterolateral tubercle without appressed setae. Ventral surface of petiole with appressed setae. Postpetiole without setae posteriorly. Fourth abdominal tergite with short and appressed setae.

Body color brown.

Type Material

References

References based on Global Ant Biodiversity Informatics

  • 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
  • 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. 1902. Myrmicinae nouveaux de l'Inde et de Ceylan. Rev. Suisse Zool. 10: 165-249.
  • Forel A. 1903. Les Formicides de l'Empire des Indes et de Ceylan. Part X. J. Bombay Nat. Hist. Soc. 14: 679-715.
  • 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.
  • 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.
  • Rajan P. D., M. Zacharias, and T. M. Mustak Ali. 2006. Insecta: Hymenoptera: Formicidae. Fauna of Biligiri Rangaswamy Temple Wildlife Sanctuary (Karnataka). Conservation Area Series, Zool. Surv. India.i-iv,27: 153-188.
  • Tiwari R. N. 1999. Taxonomic studies on ants of southern India (Insecta: Hymenoptera: Formicidae). Memoirs of the Zoological Survey of India 18(4): 1-96.