Tetramorium caespitum (Linnaeus, 1758)

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Tetramorium caespitum workers are an intermediate host of the poultry tapeworms Raillietina tetragona and Raillietina chinobothrida.

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(Figs 37, 49)

 

Formica caespitum L. , 1758: 581. Holotype female, Europe (' in Europae tuberibus') (holotype not in Linnean Society collection, London). Tetramorium caespitum (L.) ; Mayr, 1855: 426. Tetramorium caespitum var. immigrans Santschi , 1927: 54. Syntype workers, Chile: Valparaiso (Miss Edwards) (probably in NM, Basle; not seen). Syn. n. Myrmica (Myrmica) brevinodis var. transversinodis Enzmann , 1946: 47, figs 1, 2. Holotype worker, _ U. S. A.: Massachusetts, Dedham (in private coll. J. Enzmann; not seen). [Synonymy by Brown, 1949: 47; also Creighton, 1950: 291.]

 

Worker. With the group characters given above; the head densely and finely longitudinally rugulose everywhere. Spaces between rugulae with feeble ground sculpture, mostly shining. Head without unsculptured patches, without reticular or rugoreticular sculpture. Dorsal alitrunk longitudinally rugulose but on the posterior portion of the propodeal dorsum the rugulae being replaced by fine reticulatepunctate sculpture. Dorsal surfaces of petiole and postpetiole finely sculptured but each with a smooth median area or smooth median longitudinal strip. First gastral tergite unsculptured. Metanotal groove impressed in profile, the propodeal spines usually slightly longer than their basal width, but sometimes represented only by a pair of broadly triangular teeth. Pubescence of hind tibiae short and fine, decumbent to appressed.

 

During this study I have examined specimens from Massachusetts, New York and Pennsylvania, all falling within the range given by Creighton (1950). The var. transversinodis of Enzmann, noted above, is accepted as an absolute synonym of caespitum without question for, although I have not seen the holotype, the figures and description fit the species very well.

 

The status of var. immigrans is a little more dubious. It was first recorded from Chile by Santschi (1922) as T. caespitum but later he described it as caespitum var. immigrans (1927), both records being based on the same specimens from Valparaiso. Snelling & Hunt (1975) in their review of the Chilean ant fauna note the 1922 record but state that they had seen no material in their survey. Under these circumstances I think it best to assume that the Chilean record represents a casual introduction and to refer immigrans to the synonymy of caespitum . Sporadic introductions of caespitum in the neotropics are probably uncommon but I have seen material originating in Belize and Mexico during the course of this investigation.

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Species morphologically similar to T. caespitum (Linnaeus , 1758) are the dominant Tetramorium ants in temperate parts of Eurasia. Cammaerts et al. (1985) distinguished T. impurum (Foerster , 1850) from T. caespitum in central Europe based on male genitalic characters. It has recently become clear that the T. caespitum / impurum species complex constitutes in fact an assembly of cryptic species, which cannot yet be delimited clearly or assigned valid names (Steiner et al. 2002; Schlick-Steiner et al., 2006). More than one species is included within the current concepts of both T. caespitum and T. impurum . Throughout this paper we use the term “ T. caespitum s.l.” to denote species of the complex.

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Statistics of barcoding coverage: Tetramorium caespitum:

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 19
Specimens with Barcodes: 78
Species With Barcodes: 1

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สิทธิ์ของผู้ถือลิขสิทธิ์/ ผู้แต่งSujeevan Ratnasingham, Paul D.N. Hebert, Barcode of Life Data Systems (BOLD)
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“ Tetramorium caespitum HNS sensu lato”

Species morphologically similar to T. caespitum (Linnaeus HNS , 1758) are the dominant Tetramorium HNS ants in temperate parts of Eurasia. Cammaerts et al. (1985) distinguished T. impurum (Foerster HNS , 1850) from T. caespitum HNS in central Europe based on male genitalic characters. It has recently become clear that the T. caespitum HNS / impurum HNS species complex constitutes in fact an assembly of cryptic species, which cannot yet be delimited clearly or assigned valid names (Steiner et al. 2002; Schlick-Steiner et al., 2006). More than one species is included within the current concepts of both T. caespitum HNS and T. impurum HNS . Throughout this paper we use the term “ T. caespitum HNS s.l.” to denote species of the complex.

  • Güsten, R., Schulz, A., Sanetra, M. (2006): Redescription of Tetramorium forte Forel, 1904 (Insecta: Hymenoptera: Formicidae), a western Mediterranean ant species. Zootaxa 1310, 1-35: 27-27, URL:http://antbase.org/ants/publications/21095/21095.pdf
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สิทธิ์ของผู้ถือลิขสิทธิ์/ ผู้แต่งNo known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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— Fuerteventura (31), , , ; Canana (22, 61, 78, 84), Tenerife (M. Noualhier).

 

La plupart des exemplaires que j'ai sous les yeux se rapportent a la race depressum , decrite recemment par M. A. Forel, dont la couleur varie beaucoup. D'autres font passage a semilaeve Andre La de depressum est tres foncee, presque noire et caractensee par la forme courte du 1 er segment du pedicule. Sa taille, ainsi que celle du , correspond a telle des exemplaires mediterraneens de semilaeve .

 

Quelques de Tenerife ne different pas sensiblement de semilaeve .

 

Deux , l'une de Lanzarote, l'autie de Canaria, ont le mesonotum en grande partie strie; elles paraissent se rapporter a une variete a sculpture plus forte.

 

T. caespitum est repandu dans toute la region palearctique et la race semilaeve est l'une des plus communes dans la region mediterraneenne.

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There is no threat to this species.

US Migratory Bird Act: no special status

US Federal List: no special status

CITES: no special status

State of Michigan List: no special status

การอนุญาตhttp://creativecommons.org/licenses/by-nc-sa/3.0/
สิทธิ์ของผู้ถือลิขสิทธิ์/ ผู้แต่ง©1995-2013, The Regents of the University of Michigan and its licensors
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Tetramorium caespitum (Linnaeus HNS 1758)

I [introduced species]

  • Ward, P. S. (2005): A synoptic review of the ants of California (Hymenoptera: Formicidae). Zootaxa 936, 1-68: null, URL:http://antbase.org/ants/publications/21008/21008.pdf
การอนุญาตPublic Domain
สิทธิ์ของผู้ถือลิขสิทธิ์/ ผู้แต่งNo known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
แหล่งที่มาhttp://treatment.plazi.org/id/6494343C1229C8A3A36E7BF87EFF239E

Variétés diverses jaunes et noires partout, très commun. Les petites variétés claires se rapportant à peu prèsàpunicum Smith et semilaeve André sont les plus fréquentes . Ce sont elles qui servent d'esclaves àl'espèce suivante:

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National NatureServe Conservation Status:
United States

Rounded National Status Rank: NNA - Not Applicable

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Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith