Crematogaster overbecki

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Crematogaster overbecki
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Crematogaster
Species: C. overbecki
Binomial name
Crematogaster overbecki
Viehmeyer, 1916

Crematogaster overbecki casent0912734 p 1 high.jpg

Crematogaster overbecki casent0912734 d 1 high.jpg

Specimen Labels

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

Identification

Hosoishi and Ogata (2012) - This species is similar to Crematogaster brevis, but can be distinguished by lacking median rugula on the clypeus, and by the distinctive sculpture of the mesonotal dorsum.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Singapore (type locality).

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.

  • overbecki. Crematogaster overbecki Viehmeyer, 1916a: 123, fig. 3 (w.q.m.) SINGAPORE. Combination in C. (Orthocrema): Emery, 1922e: 132; in C. (Mesocrema): Santschi, 1928b: 33. See also: Hosoishi & Ogata, 2012: 24.

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 0.63; HL 0.63; CI 100; SL 0.44; SI 70; EL 0.12; PW 0.4; WL 0.64; PSL 0.11; PtL 0.18; PtW 0.19; PtH 0.13; PpL 0.12; PpW 0.18; PtHI 72; PtWI 106; PpWI 150; WI 95 (One syntype worker measured).

Compound eyes slightly projecting from lateral margin of head. Scape reaching posterior corner of head, the scape with standing and appressed setae.

Pronotal shoulders developed as ridges. Mesonotal dorsum highly convex in lateral view. Metanotal groove concave. Propodeal spines longer than the diameter of propodeal spiracles, curved upward. Anterior margin of metapleural gland bulla not reaching anterior margin of propodeal spiracle.

Petiole in dorsal view rectangular with angular corners. Subpetiolar process weakly developed, angulate. Postpetiole bilobed behind, but without distinct longitudinal median sulcus.

Dorsal surface of head generally smooth, but the malar region with longitudinal rugulae. Clypeus with two distinct pairs of rugulae laterally. The rugulae connecting the anterior and posteror clypeal margins. Dorsal face of promesonotum with relatively open, reticulate sculpture with shiny interspaces. Lateral surface of pronotum generally smooth and shining, but some longitudinal rugulae extending from the anterior portion of pronotum. Mesopleuron smooth, but lower portion of mesopleuron weakly sculptured. Longitudinal rugulae developed on the front and behind the metanotal groove in lateral view. Some rugulae on the mesonotum extending to the anterior portion of propodeal dorsum.

Fourth abdominal tergite with abundant appressed setae, and sparse standing setae.

Type Material

Syntype worker from SINGAPORE (H. Overbeck). (Naturhistorisches Museum Basel) [examined].

References

  • Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B: 95-206 (page 132, Combination in C. (Orthocrema))
  • 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))
  • Viehmeyer, H. 1916a [1915]. Ameisen von Singapore. Beobachtet und gesammelt von H. Overbeck. Arch. Naturgesch. (A) 81(8): 108-168 (page 123, fig. 3 worker, queen, male described)