Carebara diversa macgregori

AntWiki - Where Ant Biologists Share Their Knowledge
Jump to: navigation, search
Carebara diversa macgregori
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Carebara
Species: C. diversa
Subspecies: C. diversa macgregori
Trinomial name
Carebara diversa macgregori
(Wheeler, W.M., 1929)

Identification

Wheeler (1929) - This subspecies is quite unlike any of the other forms of diversus in the opacity of the body, dark color and greatly reduced pilosity. It probably represents a local, insular race.

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Philippines (type locality).

Check distribution from AntMaps.

Distribution based on specimens

Loading map...

The above specimen data are provided by AntWeb. Please see Carebara diversa_macgregori for further details

Biology

Castes

Nomenclature

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

  • macgregori. Pheidologeton diversus subsp. macgregori Wheeler, W.M. 1929g: 50, fig. 6 (w.) PHILIPPINES. Combination in Carebara: Fischer, Azorsa & Fisher, 2014: 71.

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

Description

Worker

Major Length 10 mm.

Resembling Carebara diversa philippina but distinct in the following characters: Posterior third of the head more flattened and the anterior corners more thickened and turned outward so that the cheeks are distinctly concave. Thorax and pedicel opaque, the mandibles, clypeus, a small area on the mesonotum and scutellum, the upper surface of the postpetiole, which is grooved in the middle above and appears somewhat bituberculate, the gaster and legs shining. The rugae on the head are arranged much as in philippina but are finer and denser, so that the surface they cover is rather opaque. The transverse rugae on the vertex are sharp but less numerous and those on the occiput are very fine and diverge to the corners of the head. The three smooth areas on the front are much more restricted and rather finely punctate. Pronotum coarsely, transversely rugose; mesonotum finely striate and sparsely punctate; scutellum more coarsely punctate-rugulose. Epinotum transversely rugose at the base, the declivity regularly and finely reticulate-rugulose. Petiole and postpetiole, except the smooth upper surface of the postpetiolar node, densely and finely punctate and loosely rugulose. Gaster sharply, densely and uniformly puuctate.

Pilosity almost lacking. There are only a few erect hairs on the front of the head and on the venter. Scapes with only one or two hairs; those on the appendages short and appressed.

Dark brown; mandibles, clypeus, gaster and median portion of head almost black; antennae and legs slightly paler and more reddish; borders of gastric segments golden yellow.

Minima Length 2.3-2.5 mm.

Resembling the minima of the other forms of diversus but with the meso-and epinotum decidedly opaque and more sharply reticulate. Mandibles opaque, longitudinally striate. The sparse long hairs almost lacking on the body, appressed on the appendages. Castaneous brown; head, scapes, gaster and middle portions of femora and tibiae darker; remainder of legs, fnniculi and tips of scapes paler, brownish yellow; mandibles and clypeus pale brown.

Type Material

Described from a single large worker which is practically a soldier, though it lacks the ocellus, and nine minimae taken by Dr. R. C. Mc Gregor on Samar Island, Philippines, "marching in a field and carrying seeds and beetles."

References

  • Baltazar, C. R. 1966. A catalogue of Philippine Hymenoptera (with a bibliography, 1758-1963). Pac. Insects Monogr. 8: 1-488 (page 257, listed)
  • Fischer, G., Azorsa, F. & Fisher, B.L. 2014. The ant genus Carebara Westwood (Hymenoptera, Formicidae): synonymisation of Pheidologeton Mayr under Carebara, establishment and revision of the C. polita species group. ZooKeys 438: 57–112.
  • Wheeler, W. M. 1929h. Ants collected by Professor F. Silvestri in Formosa, the Malay Peninsula and the Philippines. Boll. Lab. Zool. Gen. Agrar. R. Sc. Super. Agric. 24: 27-64 (page 50, fig. 6 worker described)