Cataglyphis bombycina
Cataglyphis bombycina | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hymenoptera |
Family: | Formicidae |
Subfamily: | Formicinae |
Tribe: | Formicini |
Genus: | Cataglyphis |
Species: | C. bombycina |
Binomial name | |
Cataglyphis bombycina (Roger, 1859) | |
Subspecies | |
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Synonyms | |
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The ‘‘silver ant’’ of the Sahara, the Sinai and the deserts of the Arabian Peninsula, this species has a polymorphic caste of workers and a monomorphic soldier caste.
Identification
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: 36.802778° to 21.568056°.
North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Afrotropical Region: Mali, Saudi Arabia.
Palaearctic Region: Algeria, Israel, Libya (type locality), Tunisia.
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. |
Biology
Behaviour of workers around nest entrances, and exit of a soldier. Filmed in Djerba, Tunisia by Philipp Hönle.
Leniaud et al. (2015) - The silver ant is common in the sand dunes of North Africa. This species has a polymorphic caste of workers and a monomorphic soldier caste. Colonies are large, with a widespread network of galleries, and queens and soldiers are usually located in the deeper parts of the nest. In mature colonies, soldiers represent only 1–2 % of the work force (S.Aron, pers. obs.). C. bombycina colonies are headed by a single queen that is mated with several males (Leniaud et al. 2013). The 2015 study examined the potential influence of genetics on caste determination. Reconstructing paternal genotypes from worker pedigree, they found that queens in the study population (Merzouga) had mated with 6–14 males. This is almost twice as high as the 5.7 males previously reported in the population of Amerzgane (Leniaud et al. 2013).
The contribution of each father in offspring production varied in all colonies, with some patrilines contributing up to 10 times more to worker and soldier progeny than other patrilines. In 2 of 7 colonies examined, the propensity to develop into the worker or soldier caste varied significantly between patrilines. Across all colonies, most patrilines produced both workers and soldiers. Collectively the results suggested a moderate genotypic influence to soldier caste determination in the silver ant. Environmental influences, especially trophic factors are believed to remain as the major determinant of caste determination.
In Merzouga, the ants live in the extremely dry sand dunes of Saharan desert. Colonies extend several meters deep and are exceptionally populous for the genus. In contrast, Amerzgane is a rugged area along the Atlas Mountains foothills; it receives more rainfall, nourishing wadis and valleys. The population occupies an old wadi facing south, and colonies are much smaller than in Merzouga.
Castes
Unlike most other species in this genus, C. bombycina has large soldiers characterized by saber-shaped mandibles occurring together with winged queens and size-polymorphic workers. Molet et al. (2014) used morphometrics to show that the soldier caste exhibits a mosaic phenotype, i.e. combining queen and worker traits. Soldiers appear to function both for defense (specialized mandibles) and food storage (big abdomen).
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- bombycina. Formica bombycina Roger, 1859: 232, pl. 7, fig. 1 (s.w.q.m.) LIBYA, EGYPT, SUDAN.
- Type-material: syntype major and minor workers, syntype queens, syntype males (numbers not stated).
- Type-localities: “Tripolis, Aegypten, Nubien und am rothen Meer” (= Libya, Egypt, Sudan, Red Sea) (Schaum, Ehrenberg, and Sichel).
- Type-depository: MNHU (perhaps also DEIB, MNHN, ZSBS).
- [Misspelled as bombicinus by Menozzi, 1934: 157.]
- Athias-Henriot, 1947: 249 (l.).
- Combination in Cataglyphis: Mayr, 1862: 701; Emery, 1912f: 98;
- combination in Myrmecocystus: Emery, 1891b: 17;
- combination in Myrmecocystus (Cataglyphis): Santschi, 1910f: 234;
- combination in Cataglyphis (Machaeromyrma): Forel, 1916: 441; Emery, 1925b: 267.
- Status as species: Mayr, 1862: 701; Mayr, 1863: 402; Roger, 1863b: 12; Mayr, 1877: 20 (in list); Emery, 1878b: 48; André, 1882b: 168 (in key); Emery, 1884a: 377; Forel, 1886f: 205; Emery, 1891b: 17; Dalla Torre, 1893: 216; Forel, 1895d: 232; Forel, 1902a: 156; Forel, 1903b: 453; Mayr, 1904b: 11; Emery, 1906d: 59; Forel, 1909e: 387; Santschi, 1910f: 234; Karavaiev, 1912a: 17; Wheeler, W.M. & Mann, 1916: 173; Stitz, 1917: 349; Viehmeyer, 1923: 93; Emery, 1925b: 267; Menozzi, 1927g: 381; Santschi, 1929b: 30; Santschi, 1929c: 106; Santschi, 1929g 166; Santschi, 1932f: 518; Menozzi, 1932c: 95; Menozzi, 1932e: 454; Menozzi, 1934: 157; Santschi, 1934b: 34; Santschi, 1934f: 175; Finzi, 1936: 193; Santschi, 1936e: 82; Santschi, 1938a: 43; Menozzi, 1940: 271; Finzi, 1940: 165; Donisthorpe, 1942a: 33; Athias-Henriot, 1947: 249; Donisthorpe, 1947e: 111; Bernard, 1948: 164; Bernard, 1953a: 206; Délye, 1960: 261; Cagniant, 1964: 93; Hamann & Klemm, 1967: 419; Kugler, J. 1981: 87 (in key); Kugler, J. 1988: 259; Agosti, 1990b: 1484; Bolton, 1995b: 134; Radchenko, 1997c: 435; Radchenko, 1998: 502 (in key); Cagniant, 2006a: 194; Cagniant, 2009: 48; Vonshak, et al. 2009: 39; Legakis, 2011: 34; Borowiec, L. 2014: 53 (see note in bibliogrpahy).
- Senior synonym of lameerei: Cagniant, 2006a: 194 (by implication).
- Senior synonym of lucasi: Cagniant, 2006a: 194.
- Senior synonym of phaeogaster: Dalla Torre, 1893: 217; Emery, 1925b: 267; Agosti, 1990b: 1484; Bolton, 1995b: 134; Radchenko, 1997c: 435.
- Distribution: Algeria, Egypt, Israel, Libya, Morocco, Saudi Arabia, Sudan, Tunisia.
- Current subspecies: nominal plus bruneipes, sinaitica.
- lameerei. Myrmecocystus lameerei Forel, 1902a: 156 (w.q.) ALGERIA.
- Type-material: syntype workers, syntype queens (numbers not stated).
- Type-localities: Algeria: Du Souf, between Tougourt and El Oued, bank of Maouiet-al-Caïd (A. Lameere), Algeria: Blidet-Amar, at Tillis, 14.v. (A. Lameere), Algeria: Oued Mzab, between Selfana and El Ateuf (A. Lameere).
- Type-depository: MHNG.
- Junior synonym of lucasi: Emery, in Forel, 1902g: 463; Emery, 1925b: 266; Santschi, 1929b: 54; Bernard, 1953a: 202; Agosti, 1990b: 1485; Bolton, 1995b: 136.
- Junior synonym of bombycina: Cagniant, 2006a: 194 (by implication).
- lucasi. Myrmecocystus lucasi Emery, 1898c: 147 (w.) TUNISIA.
- Type-material: holotype worker.
- Type-locality: Tunisia: R. el Asseli (H. Lucas).
- Type-depository: MHNG (Agosti, 1990b: 1485).
- Bernard, 1953a: 203 (m.).
- Combination in Cataglyphis: Emery, 1912f: 104;
- combination in C. (Machaeromyrma): Santschi, 1929b: 30.
- Status as species: Emery, 1906d: 60; Emery, 1925b: 266; Santschi, 1929b: 60 (in key); Bernard, 1948: 164; Bernard, 1953a: 202; Agosti, 1990b: 1485; Bolton, 1995b: 136; Borowiec, L. 2014: 57 (error).
- Junior synonym of bombycina: Cagniant, 2006a: 194.
- phaeogaster. Camponotus phaeogaster Walker, 1871: 10 (w.) EGYPT.
- Type-material: holotype (?) worker.
- [Note: no indication of number of specimens is given.]
- Type-locality: Egypt (“Arabia”): Sinai, Wadi Ferran (J.K. Lord).
- Type-depository: unknown (no type-material known to exist).
- [Notes (i): Horn & Kahle, 1936: 294, cite several depositories for Walker material including BMNH, MVMA, OXUM; and some material destroyed; (ii) Agosti, 1990b: 1484, reports no material present in BMNH.]
- [Misspelled as phaenogaster by Radchenko, 1997c: 435.]
- Junior synonym of bombycina: Dalla Torre, 1893: 217; Emery, 1925b: 267; Agosti, 1990b: 1484; Bolton, 1995b: 136; Radchenko, 1997c: 435.
Description
References
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References based on Global Ant Biodiversity Informatics
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