Dilobocondyla bangalorica

Dilobocondyla bangalorica

Dilobocondyla bangalorica is a small to medium-sized ant native to India, named after its type locality of Bangalore. Workers measure 3.4-4.05mm and have a distinctive appearance with a ferruginous (rusty orange-brown) head, thorax, petiole and postpetiole, while the gaster is brownish black. They have 6 teeth on their mandibles, large convex eyes positioned roughly mid-head, and the head is as long as it is broad. The species is characterized by strongly rugo-reticulate sculpturing on the head, thorax and petiole, with the inter-rugal spaces appearing shiny ^[1].

This ant is tree-dwelling, nesting exclusively in the cavities of living Plumeria trees (both Plumeria alba and Plumeria rubra). Colonies are monogyne, with a single queen, and wild colonies can reach around 90 workers. Workers forage individually along tree trunks and among foliage, hiding in deep bark grooves when disturbed. The species is endemic to India, found primarily in Karnataka (Bangalore area, Cubbon Park, Lalbagh) with additional records from the Western Ghats, Coorg, and Kerala ^[1][2].

Quick Summary

• Difficulty: Medium
• Origin & Habitat: India (Karnataka, Kerala), endemic to the Western Ghats region. Nests in cavities of living Plumeria trees in tropical/subtropical areas ^[1][2].
• Colony Type: Monogyne, single queen colonies with documented ergatoid replacement reproductives not observed. Observed colonies contain 1 queen with 22-91 workers ^[1].
  • Colony: Monogyne
• Size & Growth:
  • Queen: 4.75 mm ^[1]
  • Worker: 3.4-4.05 mm ^[1]
  • Colony: Up to ~91 workers observed in wild colonies ^[1]
  • Growth: Moderate, estimated based on colony development patterns
  • Development: Estimated 6-10 weeks based on typical Myrmicinae development at warm temperatures (Development timeline is not directly documented for this species, estimates based on related genus patterns)
• Antkeeping:
  • Temperature: Keep at 24-28°C, these are tropical tree-dwelling ants from India that prefer warm conditions. A gentle gradient allowing workers to self-regulate is ideal ^[1].
  • Humidity: Moderate to high, they naturally inhabit tree cavities which tend to have stable humidity. Aim for 60-80% relative humidity with some moisture in the nest substrate. The cavity-nesting lifestyle suggests they prefer slightly humid conditions ^[1].
  • Diapause: Unlikely required, this is a tropical species from India without documented winter dormancy. No diapause period has been observed in studies ^[1].
  • Nesting: Tree-dwelling species that nests in cavities. In captivity, they do well in acrylic nests or Y-tong setups with narrow chambers scaled to their size. Avoid overly dry conditions. Test tubes can work for founding colonies but may need modification to maintain humidity. Provide some vertical space and bark-like surfaces since they naturally live in tree cavities ^[1].
• Behavior: Workers are relatively docile and not aggressive. They forage individually on tree trunks and among foliage rather than forming large foraging trails. When threatened, they retreat into deep crevices rather than attacking. They are moderate escape artists, at 3.5-4mm they are small enough to slip through small gaps, so standard escape prevention measures apply. They are primarily arboreal, so they may not explore far from their nest in captivity ^[1].
• Common Issues: humidity control is critical, tree-dwelling ants can suffer in dry conditions, escape prevention matters, their small size means they can slip through standard gaps, tropical species may struggle without consistent warmth, wild-caught colonies may be stressed from relocation and require careful acclimation, limited captive breeding data means established colonies may be difficult to obtain

Natural History and Nesting

Dilobocondyla bangalorica is a tree-dwelling ant endemic to India, specifically found in the Karnataka region (Bangalore area) and extending into the Western Ghats and Kerala. The species was described in 2006 by Thresiamma Varghese and is named after its type locality, Bangalore ^[1].

In the wild, these ants nest exclusively in the cavities of living Plumeria trees, particularly favoring dead twigs on Plumeria alba and Plumeria rubra. The nests are described as shallow and wide within the tree cavities. This arboreal lifestyle is relatively unusual among Myrmicinae ants, most of which nest in soil or underground. The cavities provide stable humidity and protection from predators ^[1].

Colony surveys found between 22-91 workers per colony, with one queen per nest. The colonies also contained varying numbers of males, alates (winged reproductives), eggs, larvae and pupae depending on the season. One colony collected in July appeared to be orphaned, lacking a queen but containing workers, males and brood ^[1].

Identification and Appearance

Workers of Dilobocondyla bangalorica are small ants measuring 3.4-4.05mm in total length. They have a distinctive color pattern: the head, thorax, petiole and postpetiole are ferruginous (rusty orange-brown), while the gaster is brownish black. The antennae, coxae and leg tips are lighter in color ^[1].

Key identification features include: mandibles with 6 teeth, large convex eyes positioned roughly mid-head, a head that is as long as it is broad (CI 100), and strong rugo-reticulate sculpturing on the head and thorax. The pronotum has distinctive anterior lateral angles that project outward as small teeth. The petiole is long and curved, about twice as long as broad, with a strong ventral tooth pointing forward ^[1].

Queens are larger at 4.75mm, similar in coloration but slightly darker, with ocelli present and a gibbous thorax. Males measure around 3.4mm and are primarily black with pale white mandibles, antennae and legs ^[1].

Housing and Captive Care

Because Dilobocondyla bangalorica is a tree-dwelling species that naturally nests in tree cavities, captive setups should reflect this arboreal lifestyle. Acrylic nests or Y-tong formicaria with narrow chambers work well, the chambers should be appropriately scaled to their 3.5-4mm worker size. Test tubes can work for founding colonies but may need additional humidity management since the cotton barrier can dry out ^[1].

Maintain temperatures in the 24-28°C range, these are tropical ants from India and require consistent warmth. Room temperature in most homes may be too cool, a heating cable on one side of the nest can provide a gentle gradient. Humidity should be moderate to high (60-80%), as tree cavity nests tend to have stable moisture. Allow some drier areas within the setup so workers can self-regulate ^[1].

Escape prevention is important, at 3.5-4mm they are small enough to slip through small gaps. Use standard barriers like Fluon on test tube rims and ensure any connections between outworld and nest are secure.

Feeding and Diet

The natural diet of Dilobocondyla bangalorica has not been specifically studied, but like most Myrmicinae, they are likely omnivorous. Workers forage individually on tree trunks and among foliage, suggesting they collect both sugary secretions (honeydew from aphids or scale insects) and protein sources (small insects) ^[1].

In captivity, offer a varied diet including sugar water or honey as a constant energy source, and protein sources like small mealworms, fruit flies, or other small insects. Feed protein 1-2 times per week, removing uneaten prey after 24-48 hours. Since they are tree-dwelling, they may not travel far to forage, place food near the nest entrance ^[1].

The claustral founding type is unconfirmed, but if typical of Myrmicinae, the queen likely seals herself in and raises the first workers on stored fat reserves without foraging.

Colony Dynamics and Development

Wild colonies of Dilobocondyla bangalorica have been documented with 1 queen and 22-91 workers. One colony collected in July contained 1 queen,91 workers,15 males,15 eggs,10 pupae and 127 larvae at various developmental stages, showing the colony was actively producing brood ^[1].

Another colony from the same period appeared to be orphaned, containing 14 workers,14 males,5 alates,2 eggs,34 larvae and 16 pupae but no queen. This suggests either queen death or that the colony had already produced new reproductives that left with the queen ^[1].

The colony structure appears to be consistently monogyne (single queen), with no documented cases of multiple queens in a single nest. This means you should expect one queen per colony when keeping this species ^[1].

Frequently Asked Questions

References