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Crematogaster delagoensis
| Crematogaster delagoensis | |
|---|---|
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| 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
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| Subspecies | |
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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 |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Afrotropical Region: Mozambique (type locality), Saudi Arabia.
Palaearctic Region: Oman.
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. |
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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
   
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| Syntype of Crematogaster delagoensis. Worker. Specimen code casent0908517. Photographer Will Ericson, uploaded by California Academy of Sciences. | Owned by MHNG, Geneva, Switzerland. |
   
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| Syntype of Crematogaster delagoensis rhodesiana. Worker. Specimen code casent0908518. Photographer Will Ericson, uploaded by California Academy of Sciences. | Owned by MHNG, Geneva, Switzerland. |
   
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| Syntype of Crematogaster delagoensis merwei. Worker. 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
- 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 D. Agosti. 1996. Formicidae (Insecta: Hymenoptera) of Saudi Arabia (part 2). Fauna Saudi Arabia. 15:300-385.
- Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B: 95-206 (page 146, Combination in C. (Acrocoelia), and raised to species)
- Forel, A. 1894b. Abessinische und andere afrikanische Ameisen, gesammelt von Herrn Ingenieur Alfred Ilg, von Herrn Dr. Liengme, von Herrn Pfarrer Missionar P. Berthoud, Herrn Dr. Arth. Müller etc. Mitt. Schweiz. Entomol. Ges. 9: 64-100. (page 99, worker described)
- Sharaf, M.R., Aldawood, A.S., Hita Garcia, F. 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 (doi:10.3897/zookeys.898.37531).
- Sharaf, M.R., Bolton, B., Nasser, M.G., Wetterer, J.K., Aldawood, A.S. 2024. A new species and a new record of the ant genus Crematogaster Lund, 1831 (Hymenoptera: Formicidae) from Yemen. Annales Zoologici 74(4), 709-716 (doi:10.3161/00034541anz2024.74.4.014).
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