Crematogaster vandermeermohri

Quick Summary

• Difficulty: Medium
• Origin & Habitat: This species is known only from Sumatra, Indonesia, collected at 850 meters elevation in the Toetoepan area ^[1]. The natural habitat is tropical rainforest at moderate elevation.
• Colony Type: Colony structure is unconfirmed for this specific species.
• Size & Growth:
  • Queen: Size data unavailable, no specific measurements exist for this species
  • Worker: Size data unavailable, no specific measurements exist for this species
  • Colony: Unknown for this species
  • Growth: Moderate, based on typical genus development patterns
  • Development: Estimated 6-8 weeks at tropical temperatures based on genus-level data for similar species (Development time is inferred from related Crematogaster species, actual timing for this specific species is unconfirmed)
• Antkeeping:
  • Temperature: Keep at 24-28°C. Based on the tropical origin and moderate elevation, this species prefers warm conditions. A heating cable on one side of the nest can create a gradient.
  • Humidity: Keep humidity high, aim for 70-85%. The Sumatran rainforest origin suggests this species needs consistently moist conditions. Mist occasionally and keep the nest substrate damp but not waterlogged.
  • Diapause: No, being a tropical species from low latitude Sumatra, this ant does not require a diapause period. Keep temperatures stable year-round.
  • Nesting: In the wild, Crematogaster species typically nest in rotting wood, under bark, or in hollow twigs. In captivity, a Y-tong (AAC) nest or a naturalistic setup with rotting wood works well. They prefer tight, enclosed spaces scaled to their small size.
• Behavior: Crematogaster vandermeermohri will show typical genus behavior: workers are active and forage continuously, they raise their gaster when threatened as a defensive display, and they use chemical trails to recruit nestmates to food sources. They are not typically aggressive but will defend their nest if disturbed. Escape prevention is important, they are small and can squeeze through small gaps. They accept sugar sources (honey water, sugar water) and small protein sources (fruit flies, small crickets, mealworms).
• Common Issues: high humidity requirements mean mold can be a problem if ventilation is poor, small size makes escape prevention critical, use fine mesh and tight-fitting lids, tropical species are sensitive to temperature drops below 20°C, limited data means colony establishment may be slower than expected, wild-caught colonies may have parasites that can cause problems in captivity

Nest Preferences

In their natural habitat on Sumatra, these ants likely nest in rotting wood, under bark, or in hollow twigs and branches, typical locations for Crematogaster species. They are arboreal or semi-arboreal nesters, not ground-nesting ants. In captivity, provide a nest that mimics these conditions. A Y-tong (AAC) nest with narrow chambers works well, or you could use a naturalistic setup with pieces of rotting wood or cork bark. The chambers should be appropriately sized for their small worker size, tight spaces help them feel secure. Avoid large, open areas in the nest. ^[1]

Feeding and Diet

Crematogaster ants are omnivorous with a preference for sugar sources and protein. In captivity, offer a constant supply of sugar water or honey diluted with water. For protein, provide small insects like fruit flies, pinhead crickets, or small mealworms. They will also accept other sweet liquids. Feed protein sources 2-3 times per week, and keep sugar water available at all times. Remove any uneaten prey after 24-48 hours to prevent mold.

Temperature and Care

As a tropical species from Sumatra, keep your colony warm. Aim for temperatures between 24-28°C during the active season. The moderate elevation where the type was collected suggests they may tolerate slightly cooler nights, but maintaining warm, stable temperatures is best for colony growth. A small heating cable placed on one side of the nest can create a gentle thermal gradient. Room temperature may be acceptable if your home is naturally warm (24°C+), but monitor colony activity, if workers seem sluggish, provide gentle heating. Avoid temperatures below 20°C for extended periods. ^[1]

Behavior and Temperament

Crematogaster ants are named 'acrobat ants' for their distinctive defensive behavior, when threatened, workers raise their abdomen (gaster) high, making them appear to be doing a handstand. This allows them to point their stinger in any direction and makes them look larger to predators. They are not typically aggressive toward keepers but will defend their nest. Workers are active foragers and will quickly recruit nestmates to food sources using chemical trails. They are small ants, so escape prevention is important, they can squeeze through surprisingly small gaps. Use fine mesh on any ventilation and ensure all connections are tight.

Frequently Asked Questions

Report an Issue

The current care sheet is based fully on literature. See inconsistencies, or something that's incorrect? Please report here, it will be resolved after review from an admin. Contributing to the blogs tab also helps providing information, to make us be able to further improve the caresheets. Thank you for your support!

References