Crematogaster lucayana

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

Crematogaster lucayana casent0912698 p 1 high.jpg

Crematogaster lucayana casent0912698 d 1 high.jpg

Specimen Labels

Subspecies

Many workers and a single female, collected on Fish Hawk Key and other keys along the course of the Southern Bight in western Andros, and near the Blue Hills in New Providence. In all of these localities the species was common in grass and sedge culms and in the Tillandsias growing on the bushes along the edges of the “swashes.” (Wheeler 1905)

Identification

Wheeler (1905) - C. lucayana is closely allied to Crematogaster sanguinea of Cuba in having the petiole lower in front than behind. It resembles Crematogaster vermiculata of California in sculpturing, but has strongly diverging epinotal spines and longer antennal scapes. Its odor is quite unlike that of Crematogaster lineolata, of which it can hardly be regarded as a mere subspecies.

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Bahamas (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

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Biology

Castes

Nomenclature

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

  • lucayana. Crematogaster lucayana Wheeler, W.M. 1905b: 94, figs. G, H (w.q.) BAHAMAS. Combination in C. (Acrocoelia): Emery, 1922e: 141; in C. (Crematogaster): Bolton, 1995b: 166. Subspecies of sanguinea: Wheeler, W.M. 1913b: 490 (in text). Revived status as species: Emery, 1922e: 141. Current subspecies: nominal plus etiolata.

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

Description

Worker

Length, 2.7-4 mm.

Allied to Crematogaster lineolata. Antennal scape surpassing by fully twice its greatest diameter the posterior angle of the head; club 3-jointed. Clypeus distinctly flattened in front. Frontal area rather indistinct, triangular, narrower than long. At the posterior end of the slender frontal groove there is a very distinct dimple or impression. Thorax strongly constricted in the mesoepinotal region. Epinotal spines straight or but very slightly recurved at their tips, strongly diverging outward, upward, and backward, shorter than the distance between their bases. Petiole from above about as long as broad, in profile distinctly narrower in front than behind. Postpetiole narrower than the petiole, with a deep median groove. Gaster broad, triangular, flattened above.

Mandibles, clypeus, cheeks, and front finely but sharply and longitudinally striated, opaque; vertex somewhat smoother and more shining, with distinct transverse rugae in the occipital region. Thorax opaque; pro- and mesonotum and base of epinotum very coarsely and vermiculately rugose, the rugie being more longitudinal on the base of the epinotum and on the pleurae. Epinotal declivity, petiole, postpetiole, and gaster smooth and shining.

Hairs whitish, rather inconspicuous, mostly appressed on the body and legs, suberect on the antennal scapes, longer and more prominent on the clypeus, front and upper surfaces of the thorax and gaster.

Head and thorax piceous brown, posterior portion of head, antennae, and legs darker; gaster black; in some specimens the basal portions of the gastric segments are more brownish or piceous.

Queen

(dealated). Length, 6.8 mm.

Head sculptured like that of the worker, except the posterior portion, which is sparsely punctate. Upper portion of the thorax subopaque, more sparsely punctate than the back of the head. Meso- and metapleurae sharply and longitudinally rugose. Pilosity like that of the worker. Head, thorax, petiole, postpetiole, and legs dark reddish brown, mesonotum with a yellowish U-shaped blotch on its disc; scutellum and gaster black.

References

  • Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B: 95-206 (page 141, Combination in c. (Acrocoelia), Revived status as species)
  • 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 94, figs. G, H. worker, queen described)
  • Wheeler, W. M. 1913b. The ants of Cuba. Bull. Mus. Comp. Zool. 54: 477-505 (page 490, Subspecies of sanguinea (in text))