| Aenictus nganduensis|
Nothing is known about the biology of Aenictus nganduensis.
A member of the ceylonicus group.
Distribution based on Regional Taxon Lists
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Little is known about the biology of Aenictus nganduensis. 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 New General Catalogue, a catalogue of the world's ants.
- nganduensis. Aenictus nganduensis Wilson, 1964a: 470, figs. 47, 48 (w.) NEW GUINEA.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Holotype: HW 0.58 mm, HL 0.61 mm, SL 0.53 mm. Antenna 10-segmented. Mandibles narrow, 3-toothed; in closure a gap remains between their posterior border and the anterior clypeal border nearly as wide as the maximum mandibular width. Clypeus shallowly concave, unarmed. Parafrontal ridge absent. Occiput convex, lacking collar. Propodeal junction acutely angulate. Subpetiolar process large, consisting of an acutely angular, forward-directed flange. Pilosity moderately abundant; length of longest pronotal hairs about 0.20mm.
Head shining. Pronotum and mesonotum shining. Remainder of mesosoma microreticulate (reticular diameters about 0.01 mm) and opaque. Mesopleuron in addition bearing 3 coarse longitudinal rugae. Dorsum of postpetiole shining; remainder of pedicel microreticulate and opaque.
Paratype: HW 0.56 mm, HL 0.61 mm, SL 0.51 mm. Nearly identical to holotype.
Type locality: Nguanduo, 1000 m, Mongi-Mape Watershed, Huon Peninsula, NE New Guinea, midmountain rain forest (Wilson, acc. No. 738).
- Wilson, E. O. 1964a. The true army ants of the Indo-Australian area (Hymenoptera: Formicidae: Dorylinae). Pac. Insects 6: 427-483 (page 470, figs. 47, 48 worker described)