Tetramorium lucayanum

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Tetramorium lucayanum
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Tetramorium
Species: T. lucayanum
Binomial name
Tetramorium lucayanum
Wheeler, W.M., 1905

Tetramorium lucayanum casent0217212 p 1 high.jpg

Tetramorium lucayanum casent0217212 d 1 high.jpg

Specimen Labels

Synonyms

Described from two workers found running on the ground in the Queen's Staircase at Nassau, N. P. (Wheeler 1905). It is most likely native to Africa (Brown 1964).

Identification

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: Gambia, Guinea, Kenya, Mali, Sierra Leone.
Neotropical Region: Bahamas (type locality), Cayman Islands, Cuba, Dominican Republic, Greater Antilles, Netherlands Antilles, Puerto Rico.
Palaearctic Region: Ireland.


Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Worker

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • lucayanum. Tetramorium lucayanum Wheeler, W.M. 1905b: 100, fig. L (w.) BAHAMAS. Mann, 1920: 406 (q.). Senior synonym of rectinodis: Brown, 1964b: 131; Bolton, 1979: 172; of sexdens, waelbroeki: Brown, 1964b: 131. See also: Bolton, 1980: 340.
  • waelbroeki. Tetramorium camerunense var. waelbroeki Forel, 1909b: 53 (w.) DEMOCRATIC REPUBLIC OF CONGO. Junior synonym of lucayanum: Brown, 1964b: 131.
  • sexdens. Tetramorium lucayanum var. sexdens Forel, 1915c: 357 (w.) IRELAND. Junior synonym of lucayanum: Brown, 1964b: 131; Bolton, 1979: 172.
  • rectinodis. Tetramorium rectinodis Menozzi, 1942: 176, fig. 2 (w.) EQUATORIAL GUINEA (Bioko I.). [Also given as new in Eidmann, 1944: 454.] Junior synonym of lucayanum: Brown, 1964b: 131; Bolton, 1979: 172.

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

Description

Worker

Length 2.25-2.5 mm.

Head quadrangular, excluding the mandibles somewhat longer than broad. Mandibles broad, s-toothed. Anterior border of clypeus transverse, without teeth. Each frontal carina is continued back as a prominent ruga which, especially behind, bounds a distinct elongate elliptical scrobe for the reception of the antennal scape. Antennae 12-jointed, scape not reaching the posterior corner of the head. Thorax seen from above with prominent humeral angles, in profile with faint but distinct mesoepinotal depression, especially in the pleural region. Epinotal spines rather slender, straight, directed outward, upward, and backward, somewhat longer than the distance between their bases. Episterna produced into prominent spines, fully half as long as those on the epinotum, pointed and curved upward at the tips. Petiole distinctly pedunculate, the node in profile quadrangular, rising abruptly in front, with a horizontal-dorsal surface and steep posterior declivity; seen from above it is oval, somewhat narrower in front than behind, and about 1 1/2 times as long as broad. Postpetiole subglobular, about as long as broad, distinctly broader than the petiole. Gaster rather small. Legs robust, with thickened, fusiform femora.

Body shining throughout. Mandibles rather delicately striato-punctate. Clypeus with several longitudinal rugae. Head and thorax traversed by sharp longitudinal rugae which are not very close together and have a tendency to become reticulate, especially on the thorax; interrugal spaces with shallow punctures which are much finer and denser on the antennal scrobes. Node of petiole with very coarse reticulate rugae, several of which are conspicuously transverse. Postpetiole smooth except for a few longitudinal wrinkles on the sides. Gaster glabrous.

Hairs. pale yellowish, sparse, long, and erect on the body, much shorter, more numerous, and appressed on the antennae and legs.

Black; mandibles, antennae, legs, and tip of gaster reddish yellow; neck, peduncle of petiole, scapes, and femora dark brown.

References

  • Bolton, B. 1979. The ant tribe Tetramoriini (Hymenoptera: Formicidae). The genus Tetramorium Mayr in the Malagasy region and in the New World. Bull. Br. Mus. (Nat. Hist.) Entomol. 38: 129-181 (page 172, Senior synonym of rectinodis)
  • Bolton, B. 1980. The ant tribe Tetramoriini (Hymenoptera: Formicidae). The genus Tetramorium Mayr in the Ethiopian zoogeographical region. Bull. Br. Mus. (Nat. Hist.) Entomol. 40: 193-384 (page 340, see also)
  • Brown, W. L., Jr. 1964d. Solution to the problem of Tetramorium lucayanum (Hymenoptera: Formicidae). Entomol. News 75: 130-132 PDF
  • Mann, W. M. 1920b. Additions to the ant fauna of the West Indies and Central America. Bull. Am. Mus. Nat. Hist. 42: 403-439 (page 406, queen described)
  • Wheeler, W. M. 1905c. The ants of the Bahamas, with a list of the known West Indian species. Bull. Am. Mus. Nat. Hist. 21: 79-135 (page 100, fig. L worker described)