Crematogaster delagoensis

AntWiki: The Ants --- Online
Crematogaster delagoensis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Crematogaster
Species: C. delagoensis
Binomial name
Crematogaster delagoensis
Forel, 1894

Crematogaster delagoensis casent0902093 p 1 high.jpg

Crematogaster delagoensis casent0902093 d 1 high.jpg

Specimen Labels

Subspecies

Identification

Collingwood and Agosti (1996) - HW 0.63; SI 104. This species is like Crematogaster flaviventris in general appearance but has smoother sculpture, is much smaller and the propodeal armature is reduced to minute denticles. It is similar to Crematogaster inermis of Egypt and Palestine apart from the paler gaster and angulate propodeum.

Keys including this Species

Distribution

Sharaf et al. (2019): This species was originally described from Mozambique and in the Afrotropical region seems to be restricted to Southern Africa (Guénard et al. 2017; Janicki et al. 2017). Our material represents the first record from the KSA since the species was previously only known from Yemen and Oman (Borowiec 2014; Colling-wood and Agosti 1996; Sharaf et al. 2018).

Latitudinal Distribution Pattern

Latitudinal Range: 22.41559° to -33.36667°.

   
North
Temperate
North
Subtropical
Tropical South
Subtropical
South
Temperate

Distribution based on Regional Taxon Lists

Afrotropical Region: Mozambique (type locality), Saudi Arabia.
Palaearctic Region: Oman.

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

Worker

Images from AntWeb

Crematogaster delagoensis casent0908517 h 1 high.jpgCrematogaster delagoensis casent0908517 p 1 high.jpgCrematogaster delagoensis casent0908517 d 1 high.jpgCrematogaster delagoensis casent0908517 l 1 high.jpg
Syntype of Crematogaster delagoensisWorker. Specimen code casent0908517. Photographer Will Ericson, uploaded by California Academy of Sciences. Owned by MHNG, Geneva, Switzerland.
Crematogaster delagoensis casent0908518 h 1 high.jpgCrematogaster delagoensis casent0908518 p 1 high.jpgCrematogaster delagoensis casent0908518 d 1 high.jpgCrematogaster delagoensis casent0908518 l 1 high.jpg
Syntype of Crematogaster delagoensis rhodesianaWorker. Specimen code casent0908518. Photographer Will Ericson, uploaded by California Academy of Sciences. Owned by MHNG, Geneva, Switzerland.
Crematogaster delagoensis casent0912666 h 1 high.jpgCrematogaster delagoensis casent0912666 p 1 high.jpgCrematogaster delagoensis casent0912666 d 1 high.jpgCrematogaster delagoensis casent0912666 l 1 high.jpg
Syntype of Crematogaster delagoensis merweiWorker. Specimen code casent0912666. Photographer Will Ericson, uploaded by California Academy of Sciences. Owned by NHMB, Basel, Switzerland.

Nomenclature

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

  • delagoensis. Crematogaster inermis r. delagoensis Forel, 1894b: 99 (w.) MOZAMBIQUE.
    • Type-material: syntype workers (number not stated).
    • Type-locality: Mozambique: Delagoa (Liengme).
    • Type-depository: MHNG.
    • Combination in C. (Acrocoelia): Emery, 1922e: 146;
    • combination in C. (Crematogaster): Bolton, 1995b: 166.
    • Subspecies of inermis: Forel, 1913a: 126; Arnold, 1920a: 539; Wheeler, W.M. 1922a: 840.
    • Status as species: Emery, 1922e: 146; Bolton, 1995b: 151; Collingwood & Agosti, 1996: 330; Borowiec, L. 2014: 65 (see note in bibliography); Sharaf, Aldawood & Hita Garcia, 2019: 50.
    • Distribution: Mozambique, Oman, Saudi Arabia, Yemen.
    • Current subspecies: nominal plus acutidens, merwei, rhodesiana.

Taxonomic Notes

Sharaf et al. (2019): The disjunctive distribution raises some doubts about the identity of our material. Even though it is conspecific the material previously identified from Oman and Yemen, it needs to be proven that it is indeed C. delagoensis. The lack of records from East Africa and the southwestern parts of KSA could be due to insufficient sampling, but it could also be that the Arabian material is not similar to the South African “genuine” C. delagoensis.

Description

References

References based on Global Ant Biodiversity Informatics

  • Borowiec L. 2014. Catalogue of ants of Europe, the Mediterranean Basin and adjacent regions (Hymenoptera: Formicidae). Genus (Wroclaw) 25(1-2): 1-340.
  • Collingwood, C. A., and A. van Harten. "Additions to the Ant Fauna of Yemen (Hymenoptera: Formicidae)." Buchreihe zur Entomologie 8 (2001): 559-568.
  • Collingwood, C. A., and Donat Agosti. "Formicidae (Insecta: Hymenoptera) of Saudi Arabia (Part 2)." Fauna of Saudi Arabia 15 (1996): 300-385.
  • IZIKO South Africa Museum Collection
  • Sharaf M. R., B. L. Fisher, H. M. Al Dhafer, A. Polaszek, and A. S. Aldawood. 2018. Additions to the ant fauna (Hymenoptera: Formicidae) of Oman: an updated list, new records and a description of two new species. Asian Myrmecology 10: e010004
  • Sharaf M. R., S. A. Aldawood, and F. Hita Garcia. 2019. Review of the Arabian Crematogaster Lund (Hymenoptera, Formicidae), synoptic list, distribution, and description of two new species from Oman and Saudi Arabia. ZooKeys 898: 27-81