Wheeler, W.M. & Chapman, 1925
Nothing is known about the biology of Aenictus luzoni.
- 1 Identification
- 2 Distribution
- 3 Biology
- 4 Castes
- 5 Nomenclature
- 6 References
- 7 References based on Global Ant Biodiversity Informatics
Keys including this Species
Known from Luzon and Negros, Philippines.
Distribution based on Regional Taxon Lists
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
Little is known about the biology of Aenictus luzoni. The genus is comprised of species that live an army ant lifestyle. Aenictus typically prey on other ants, from other genera, or other insects such as wasps or termites. There are reports of Aenictus preying on other insects as well and even have been observed collecting honeydew from homopterans (Santschi, 1933; Gotwald, 1995) but this appears, at least from available evidence, to be uncommon. Foraging raids can occur day or night across the ground surface. Occasionally raids are arboreal. During a raid numerous workers attack a single nest or small area, with several workers coordinating their efforts to carry large prey items back to the nest or bivouac. Aenictus have a nomadic life style, alternating between a migratory phase in which nests are temporary bivouacs in sheltered places above the ground and a stationary phase where semi-permanent underground nests are formed. During the nomadic phase bivouacs move regularly, sometimes more than once a day when larvae require large amounts of food. Individual nests usually contain up to several thousand workers, although nest fragments containing only a few hundred workers are often encountered. Queens are highly specialised and look less like workers than in most ant species. They have greatly enlarged gasters (dichthadiform) and remain flightless throughout their life. New colonies are formed by the division of existing colonies (fission) rather than by individual queens starting colonies on their own.
Known only from the worker caste.
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- luzoni. Aenictus luzoni Wheeler, W.M. & Chapman, 1925: 48, pl. 1, figs. 1, 2 (w.) PHILIPPINES (Luzon I.).
- Type-material: lectotype worker (by designation of Jaitrong & Yamane, 2011: 40), 1 paralectotype worker.
- [Note: original description mentions 8 syntype workers.]
- Type-locality: lectotype Philippines: Luzon, Ilocos Norte Prov., Bangui (C.S. Banks); paralectotype with same data.
- Type-depository: MCZC.
- Combination in A. (Typhlatta): Wheeler, W.M. 1930g: 199.
- [Misspelled as luzonensis by Chapman & Capco, 1951: 13.]
- Status as species: Wheeler, W.M. 1930g: 206; Chapman & Capco, 1951: 13; Chapman, 1963: 263; Wilson, 1964a: 470; Baltazar, 1966: 231; Bolton, 1995b: 60; Jaitrong & Yamane, 2011: 40 (redescription).
- Distribution: Philippines (Luzon, Negros).
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Jaitrong and Yamane (2011) - Measurements. Worker lectotype and paralectotype (n = 2): TL 3.95– 4.00 mm; HL 0.85–0.88 mm; HW 0.78 mm; SL 0.73–0.75 mm; ML 1.38–1.43 mm; PL 0.33 mm; CI 89–91; SI 94–97.
Lectotype and paralectotype - Head in full-face view slightly longer than broad, with sides and posterior margin feebly convex; occipital margin bearing a carina. Antennal scape relatively short and thin, not reaching the posterolateral corner of head; antennal segments II–X each longer than broad; II slightly longer than each of III–VII. Frontal carina short, slightly extending beyond the posterior margin of torulus.
Anterior margin of clypeus convex, bearing several denticles. Masticatory margin of mandible with a large apical tooth followed by a medium-sized subapical tooth, 4 denticles, and a medium-sized basal tooth; basal margin lacking denticles. Mesosoma relatively slender; promesonotum in profile convex dorsally and sloping gradually to metanotal groove; dorsal outline of propodeum almost straight; area between propodeal spiracle and metanotal gland bulla impressed; propodeal junction rounded; declivity feebly concave, not margined dorsally and laterally. Petiole relatively short, almost as long as high; its node in dorsal outline strongly convex; subpetiolar process weakly developed, triangular, apex directed downward and forward; postpetiole almost as long as petiole. Entire head including antennal scape smooth and shiny. Mandible very finely striate except along masticatory margin. Mesosoma entirely smooth and shiny, except for metapleuron and metanotal groove that have irregular longitudinal rugae; propodeal dorsum with about 3–5 short longitudinal rugae. Petiole and postpetiole entirely smooth and shiny. Legs entirely smooth and shiny.
Head and mesosoma dorsally with relatively sparse standing hairs mixed with sparse short hairs over the surface; longest pronotal hair 0.20 mm long. Entire body reddish-brown. Typhlatta spot located anterior to occipital corner.
Jaitrong and Yamane (2011) - Two syntype workers from Philippines, Luzon, Ilocos Norte Prov., Bangui (Museum of Comparative Zoology, examined). One worker is selected as the lectotype, the other as paralectotype.
- Chapman, J. W.; Capco, S. R. 1951. Check list of the ants (Hymenoptera: Formicidae) of Asia. Monogr. Inst. Sci. Technol. Manila 1: 1-327 (page 13, checklist)
- Jaitrong, W. & Yamane, S. 2011. Synopsis of Aenictus species groups and revision of the A. currax and A. laeviceps groups in the eastern Oriental, Indo-Australian, and Australasian regions (Hymenoptera: Formicidae: Aenictinae). Zootaxa, 3128, 1–46. PDF
- Wheeler, W. M.; Chapman, J. W. 1925. The ants of the Philippine Islands. Part I, Dorylinae and Ponerinae. Philippine Journal of Science. 28: 47-73 (page 48, pl. 1, figs. 1, 2 worker described)
- Wilson, E. O. 1964a. The true army ants of the Indo-Australian area (Hymenoptera: Formicidae: Dorylinae). Pacific Insects. 6: 427-483 (page 470, see also)
References based on Global Ant Biodiversity Informatics
- Borowiec M. L. 2016. Generic revision of the ant subfamily Dorylinae (Hymenoptera, Formicidae). ZooKeys 608: 1–280.
- CSIRO Collection
- Chapman J. W. 1963. Some new and interesting Philippine ants (Hymenoptera: Formicidae). Philipp. J. Sci. 92: 247-263.
- Jaitrong W.; Yamane, S. 2011. Synopsis of Aenictus species groups and revision of the A. currax and A. laeviceps groups in the eastern Oriental, Indo-Australian, and Australasian regions (Hymenoptera: Formicidae: Aenictinae). Zootaxa 3128:1-46.
- Wheeler W. M. 1930. Philippine ants of the genus Aenictus with descriptions of the females of two species. Journal of the New York Entomological Society 38: 193-212.
- Wheeler W. M., and J. W. Chapman. 1925. The ants of the Philippine Islands. Part I, Dorylinae and Ponerinae. Philipp. J. Sci. 28: 47-73.
- Wilson E. O. 1964. The true army ants of the Indo-Australian area (Hymenoptera: Formicidae: Dorylinae). Pacific Insects 6: 427-483.