Calyptomyrmex asper

AntWiki: The Ants --- Online
Calyptomyrmex asper
Calyptomyrmex asper
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Calyptomyrmex
Species: C. asper
Binomial name
Calyptomyrmex asper
Shattuck, 2011

Calyptomyrmex asper side view

Calyptomyrmex asper top view

Nothing is known about the biology of Calyptomyrmex asper.


Shattuck (2011) - Hairs on head and body thin (essentially the same width along entire length, or only slightly and gradually expanded distally, and with blunt tips), propodeum lacking spines, gaster weakly (and sometimes indistinctly) punctate, and body larger (HW > 1.05mm). This combination of characters will separate this species from all others considered in this study. See Calyptomyrmex ryderae for details separating these two species.

Keys including this Species


Latitudinal Distribution Pattern

Latitudinal Range: 1.633333325° to 1.633333325°.

Tropical South

Distribution based on Regional Taxon Lists

Indo-Australian Region: Borneo (type locality), Indonesia, Malaysia.

Distribution based on AntMaps


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.

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.


This species is known from a single specimen. Nothing is known regarding its biology.



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

  • asper. Calyptomyrmex asper Shattuck, 2011a: 4, figs. 2, 18 (w.) BORNEO (East Malaysia: Sarawak).
    • Type-material: holotype worker.
    • Type-locality: Malaysia: Sarawak, Nanga Tekalit Camp, 14.ii.1963 (A.E. Emerson).
    • Type-depository: ANIC.
    • Status as species: Akbar & Bharti, 2015: 8 (in key).
    • Distribution: Malaysia (Sarawak).

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



(holotype) - CFW 0.12; CI 105; HL 1.00; HW 1.06; ML 1.05; MTL 0.51; PetI 115; PetL 0.31; PetW 0.36; PronW 0.67; SI 55; SL 0.59.

Lateral margins of head in full-face view relatively strongly diverging posteriad. Mandibles indistinctly striate, more strongly basally, less so apically. Eyes with 4–5 ommatidia in greatest diameter. Propodeum in lateral view lacking angles or spines (slight convexities are present on the propodeum in the vicinity of the angle, but these are extensions of the lateral propodeal rugae and are not true spines). Propodeal lobes thin anteriorly, thickened posteriorly. Node of petiole in profile higher and much larger than that of postpetiole, its anterior angle broadly rounded between the anterior and dorsal faces. In dorsal view the petiolar node slightly narrower than the postpetiolar node. Head, mesosoma, and petiolar and postpetiolar nodes with heavy, deep, wavy rugae, the entire surface (including the rugae) indistinctly sculptured and with a matte appearance. Gaster finely and indistinctly sculptured. Hairs on head and body erect and expanded slightly distally, their tips either blunt or slightly convex (but never rounded). Clypeal fork with both enlarged and thin hairs, the thin hairs longer. Colour dull red-brown, antennae and legs slightly lighter.

Type Material

Holotype worker from Nanga Tekalit Camp, Sarawak, Malaysia, 14 February 1963, A. E. Emerson (ANIC32-051667).


References based on Global Ant Biodiversity Informatics

  • CSIRO Collection
  • Shattuck S. O. 2011. Revision of the ant genus Calyptomyrmex (Hymenoptera: Formicidae) in South-east Asia and Oceania. Zootaxa 2743:1-26.