Pheidole longipes

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Pheidole longipes
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. longipes
Binomial name
Pheidole longipes
(Latreille, 1802)

Pheidole longipes casent0281706 p 1 high.jpg

Pheidole longipes casent0281706 d 1 high.jpg

Specimen Labels

This species inhabits well-developed forests, and nests in rotting fallen logs on the forest floor. (Eguchi 2001)

Identification

Eguchi (2001) - This species is closely related to Pheidole comata and Pheidole montana, and these three are peculiar among Indo-Chinese and Indo-Malayan congeners in the characteristics noted under P. comata. This species is distinguished from related species by the characteristics noted under P. comata and P. montana.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Borneo, Indonesia, Malaysia.
Neotropical Region: French Guiana (type locality).
Oriental Region: India, Nicobar Island, Thailand.

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

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

  • longipes. Formica longipes Latreille, 1802c: 233, pl. 11, fig. 68 (w.) FRENCH GUIANA. Combination in Pheidole: Emery, 1921a: 25.

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

Description

Worker

Eguchi 2001. Figure 25.

Eguchi (2001) - Major (n=32): TL 6.8-7.9 mm, HL 2.38-3.03 mm, HW 2.05-2.73 mm, SL 1.50-2.08 mm, FL 2.33-3.35 mm, Cl 84-98, Sl 63-96, FI 98-152. Head broadest at 2/3-3/4 distance of head (as measured from the mid-point of a transverse line spanning the anteriormost and posteriormost projecting points, respectively) posterior margin of head in full-face view with a median emargination from which a shallow longitudinal impression extends to midlength of head (Fig. 25A); head in profile not impressed on vertex (Fig. 25B). Hypostoma bearing an inconspicuous median process, or lacking median processes. Clypeus with a median longitudinal carina, with anterior margin hardly emarginate medially. Eye situated around 1/3 distance of head; distance between mandibular insertion and anterior margin of eye 1.5-1.7 times as long as maximal diameter of eye. Frontal carina and antennal scrobe present only around antennal insertion. Antenna without conspicuous club; scape extending backward to 2/3-9/10 distance of head. Masticatory margin of mandible with apical and preapical teeth, and a denticle in front of basal angle. Promesonotal dome with a distinct prominence on its posterior declivity (Fig. 25C); the prominence in anterior view not or very weakly concave medially. Mesopleuron with an indistinct transverse impression. Propodeal spine corniform, 2.5-3 times as long as diameter of propodeal spiracle. Petiole in profile cuneiform, 1.0-1.1 times as long as postpetiole, with ill-defined node of which apex in posterior view is distinctly concave. Postpetiole in dorsal view subpentagonal, 2.0-2.2 times as broad as petiole.

Frons and gena longitudinally rugose; fine longitudinal rugulae curving outward on occipital lobes; lateral face of occipital lobe finely and weakly rugose with punctured interspaces, or smooth and shining over the surface; median portion of dorsolateral face of head rugoso-reticulate with enclosures punctured and dull; promesonotal dome smooth and shining, or in dorsal view weakly transversely rugose, with smooth and shining interspaces; remainder of alitrunk weakly punctured and smooth and shining partly, or weakly rugoso-reticulate, with punctured and dull enclosures; petiole (excluding smooth and shining anterodorsal face), postpetiole and first gastral tergite punctured and dull. Head in profile sparsely bearing standing hairs dorsally, and in full-face view bearing appressed pubescence, but lacking standing hairs (sometimes sparsely with them only on lateral face of occipital lobe) (Fig. 25A); outer face of mandible sparsely covered with appressed hairs, which are 0.03-0.06 mm in length and much shorter than distance between piligerous hairs; submarginal zone of masticatory margin of mandible with a row of longer decumbent hairs; in profile dorsum of promesonotal dome in front of the prominence on its posterior declivity bearing less than 10 standing hairs (Fig. 25C). Body reddish-brown to dark reddish-brown; flagella and legs lighter than alitrunk.

Minor (n=62): TL 4.1-5.1 mm, HL 1.04-1.54 mm, HW 0.66-0.93 mm, SL 1.67-2.38 mm, AL 1.50-2.11 mm, FL 2.10-3.04 mm, CI 58-70, SI 196-293, FI 247-372. Head in full-face view narrowed and prolonged behind eyes; occipital carina forming a distinct flange (Fig. 250, E). Clypeus sometimes with a longitudinal median carina, with anterior margin slightly convex or truncate medially. Eye situated at about 4/9 distance of head (as measured from anterior margin of clypeus to occipital carina); distance between mandibular insertion and anterior margin of eye 0.9-1.0 times as long as maximal diameter of eye. Antenna without conspicuous club (Fig. 25F), but 8th segment 1.3-1.4 times as long as 7th. Promesonotal dome with a distinct prominence on its posterior declivity (Fig. 25G). Mesopleuron without distinct transverse impression. Propodeal spine 2-2.5 times as long as diameter of propodeal spiracle. Petiole in profile cuneiform, with ill-defined node, 0.9-1.0 times as long as postpetiole. Postpetiole 2.0-2.3 times as broad as petiole, in dorsal view distinctly longer than broad, gently narrowed forward in its anterior 2/3.

Clypeus smooth and shining, or slightly punctured and with several rugulae; remainder of head and promesonotal dome smooth and shining; mesopleuron and lateral face of propodeum punctured (occasionally smooth and shining partly); lateral faces of petiole and postpetiole weakly punctured; dorsa of petiole and postpetiole, and gaster smooth and shining. Body brown to dark brown (rarely light brown); legs lighter than alitrunk.

Type Material

Eguchi (2001) - Minor (The Natural History Museum). Type locality: Singapore. One syntype (minor) was examined.

References

  • Bingham, C. T. 1903. The fauna of British India, including Ceylon and Burma. Hymenoptera, Vol. II. Ants and Cuckoo-wasps. London: Taylor and Francis, 506 pp. (page 272, Combination in Aphaenogaster)
  • Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp. (page 324, Combination in Pheidole; current combination)
  • Crawley, W. C. 1924a. Ants from Sumatra, with biological notes by Edward Jacobson. Ann. Mag. Nat. Hist. 9(13): 380-409 (page 391, soldier, queen, male described)
  • Eguchi, K. 2001a. A revision of the Bornean species of the ant genus Pheidole (Insecta: Hymenoptera: Formicidae: Myrmicinae). Tropics Monograph Series. 2:1-154. PDF
  • Eguchi, K. 2003. A Study on the Male Genitalia of Some Asian Species of Pheidole (Hymenoptera, Formicidae, Myrmicinae). Sociobiology 41(2): 317-355 (page 327, figs. 12A, B male genitalia described)
  • Emery, C. 1895m. Viaggio di Leonardo Fea in Birmania e regioni vicine. LXIII. Formiche di Birmania del Tenasserim e dei Monti Carin raccolte da L. Fea. Parte II. Ann. Mus. Civ. Stor. Nat. 34[=(2(14): 450-483 (page 470, Combination in Aphaenogaster)
  • Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B: 95-206 (page 114, Combination in Ischnomyrmex)
  • Forel, A. 1899e. Formicidae. [part]. Biol. Cent.-Am. Hym. 3: 57-80 (page 65, raised to species)
  • Forel, A. 1912n. Descriptions provisoires de genres, sous-genres, et espèces de Formicides des Indes orientales. Rev. Suisse Zool. 20: 761-774 (page 765, Combination in Pheidole (Isopheidole))
  • Forel, A. 1913l. Wissenschaftliche Ergebnisse einer Forschungsreise nach Ostindien ausgeführt im Auftrage der Kgl. Preuss. Akademie der Wissenschaften zu Berlin von H. v. Buttel-Reepen. II. Ameisen aus Sumatra, Java, Malacca und Ceylon. Gesammelt von Her (page 49, Combination in P. (Ischnomyrmex))
  • Latreille, P. A. 1802b. Histoire naturelle générale et particulière des Crustacés et des insectes. Tome 3. Familles naturelles des genres. Paris: F. Dufart, xii + 467 pp. (page 233, junior secondary homonym of Formica longipes Latreille, 1802)
  • Mayr, G. 1862. Myrmecologische Studien. Verh. K-K. Zool.-Bot. Ges. Wien 12: 649-776 (page 739, Combination in Ischnomyrmex)
  • Pergande, T. 1896. Mexican Formicidae. Proc. Calif. Acad. Sci. (2) 5: 858-896 (page 885, soldier, worker described)
  • Smith, F. 1857a. Catalogue of the hymenopterous insects collected at Sarawak, Borneo; Mount Ophir, Malacca; and at Singapore, by A. R. Wallace. [part]. J. Proc. Linn. Soc. Lond. Zool. 2: 42-88 (page 70, pl. 1, fig. 6 worker described [unresolved junior secondary homonym of Formica longipes Latreille])
  • Viehmeyer, H. 1914d. Mayr's Gattung Ischnomyrmex (Hym.) nebst Beschreibung einiger neuer Arten aus anderen Gattungen. Zool. Jahrb. Abt. Syst. Geogr. Biol. Tiere 37: 601-612 (page 608, Combination in P. (Ischnomyrmex))
  • Wheeler, W. M. 1915b. Some additions to the North American ant-fauna. Bull. Am. Mus. Nat. Hist. 34: 389-421 (page 397, queen described)
  • Wheeler, W. M. 1916g. Some new formicid names. Psyche (Camb.) 23: 40-41 (page 40, replacement name Pheidole grallipes)
  • Wheeler, G. C.; Wheeler, J. 1953b. The ant larvae of the myrmicine tribe Pheidolini (Hymenoptera, Formicidae). Proc. Entomol. Soc. Wash. 55: 49-84 (page 80, larva described)