Proceratium kepingmai

Quick Summary

• Difficulty: Expert
• Origin & Habitat: Southeastern China (Jiangxi and Zhejiang provinces) in secondary subtropical mixed evergreen broad-leaved forest at 270-665m elevation. The Gutianshan National Nature Reserve features over 250 woody plant species on sloped terrain, dominated by evergreen species like Castanopsis eyrei and Cyclobalanopsis glauca ^[1][2].
• Colony Type: Unknown, colony structure has not been documented for this species.
• Size & Growth:
  • Queen: Size data unavailable, no queen has been described.
  • Worker: 4.39-4.54 mm ^[1]
  • Colony: Unknown, only two worker specimens have ever been collected.
  • Growth: Unknown
  • Development: Unknown, no development data exists for this species. (No direct development data is available.)
• Antkeeping:
  • Temperature: Based on their subtropical habitat, aim for warm conditions around 22-26°C ^[1]. Adjust based on colony activity.
  • Humidity: Keep nest substrate consistently moist but not waterlogged, with a gradient ^[1].
  • Diapause: Unknown, no data on diapause requirements.
  • Nesting: In the wild, collected from leaf litter using Winkler extraction ^[1]. In captivity, provide moist soil or well-humidified nests scaled to their size.
• Behavior: Based on Proceratium genus patterns, these ants are cryptic, slow-moving predators ^[3]. Escape risk is moderate due to their small size and cryptic behavior.
• Common Issues: no captive breeding history, this is one of the least-studied ant species in captivity, with no established husbandry protocols., very small known population, only two specimens ever collected means biological data is extremely limited., slow growth potential, related Proceratium species grow slowly, which can frustrate keepers expecting rapid colony development., humidity management, forest-floor species are prone to mold if kept too wet, but can desiccate if too dry., escape prevention, while not tiny, their small size and cryptic behavior mean they can escape through standard barriers if not careful.

Discovery and Rarity

Proceratium kepingmai was formally described in 2018 from two worker specimens collected in Jiangxi and Zhejiang provinces ^[1][2]. The species name honors Professor Keping Ma for his work in biodiversity research ^[1]. All specimens were collected in old-growth secondary subtropical forest, an ecosystem Professor Ma extensively studied ^[1].

Identification and Appearance

This is the largest species in the Proceratium itoi clade, with workers measuring 4.39-4.54 mm in total length ^[1]. Their most distinctive feature is extremely reduced eyes, consisting of a single ommatidium ^[1]. The head has weakly convex sides broadest at eye level, and the frontal furrow is conspicuously darker than the surrounding head surface ^[1]. The propodeal declivity is densely punctured and mostly opaque, unlike its closest relative P. bruelheidei ^[1][2]. Body color is uniformly orange-brown to reddish-brown ^[1].

Natural Habitat

Both known specimens were collected in secondary mixed evergreen broad-leaved forest of relatively advanced age, indicated by the presence of large trees ^[1]. The Gutianshan National Nature Reserve is one of the larger remaining fragments of subtropical broad-leaved forest in southeastern China, with over 250 recorded woody species ^[1]. The ants were collected using Winkler leaf litter extraction, confirming they live in the forest floor leaf litter layer ^[1].

Proceratium Biology and Care Assumptions

Since no direct observations exist for P. kepingmai, keepers must rely on genus-level knowledge. Proceratium ants are specialized predators that hunt small arthropods on the forest floor ^[3]. Queens are typically claustral, sealing themselves in a chamber until workers emerge ^[3]. Colonies are usually small, and these ants are cryptic and slow-moving ^[3].

Housing and Nesting

Provide a naturalistic setup that mimics the forest floor environment. Use moist soil or well-humidified nests with chambers scaled to their size ^[1]. Keep the nest area consistently humid but ensure ventilation prevents mold buildup ^[1]. Since they are poor climbers, standard barrier methods are usually sufficient ^[3].

Feeding

Based on genus-level behavior, P. kepingmai is likely a predator that hunts small arthropods ^[3]. Offer small live prey such as fruit flies or pinhead crickets 2-3 times per week, removing uneaten items within 24 hours ^[3].

Temperature and Seasonal Care

Maintain temperatures around 22-26°C, reflecting their subtropical Chinese habitat ^[1]. A slight temperature gradient allows workers to self-regulate. Whether they require a winter rest period is unknown, monitor for seasonal slowdowns ^[1].

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