Prenolepis cyclopia

Prenolepis cyclopia

Prenolepis cyclopia is a small, recently described ant species from eastern China. Workers measure 3.6-4.0mm and have a striking two-tone coloration: the head and gaster are black while the mesosoma, petiole, antennae, and legs are yellow to yellowish brown ^[1]. Their most distinctive physical feature is the strongly constricted mesosoma (middle body section) that gives them a wasp-waisted appearance, combined with a large, gibbous (humpbacked) gaster that is about twice the length of the head ^[1]. The antennae are notably stout and long, extending about half their length beyond the back of the head ^[1].

This species was only described in 2018,so virtually nothing is known about its biology in the wild or how it performs in captivity ^[1]. Based on its placement in the genus Prenolepis (which is closely related to Lasius), it likely shares similar care requirements with other small, temperate-adapted ants, but specific needs remain unconfirmed.

Quick Summary

• Difficulty: Unknown
• Origin & Habitat: Eastern China, found in Zhejiang, Guizhou, and Hunan provinces at elevations ranging from 276m to 1009m ^[1]. The type locality is Tianmu Mountain Nature Reserve in Zhejiang. The habitat type is not documented.
• Colony Type: Unconfirmed. Based on genus-level patterns, likely single-queen (monogyne) colonies, but this has not been studied for this specific species.
• Size & Growth:
  • Queen: Unknown, not yet described ^[1]
  • Worker: 3.6-4.0mm total length ^[1]
  • Colony: Unknown, no colony size data exists for this species
  • Growth: Unknown, no development data exists for this species
  • Development: Unknown, no direct measurements exist. Based on related Prenolepis and Lasius species, estimate 6-10 weeks at optimal temperature. (This is a rough estimate based on genus-level patterns. Direct observations are needed for accurate timelines.)
• Antkeeping:
  • Temperature: Likely moderate temperatures around 18-24°C based on the temperate climate of its Chinese range. Start in the low 20s Celsius and observe colony activity for guidance.
  • Humidity: Likely moderate humidity preferences typical of temperate forest ants. Keep nest substrate lightly moist but not waterlogged. Provide a moisture gradient so ants can choose their preferred zone.
  • Diapause: Likely requires a winter rest period (diapause) given its distribution in temperate China. Related Lasius species typically hibernate for 3-4 months at temperatures around 5-10°C.
  • Nesting: No specific nesting data exists. Based on genus patterns, likely nests in soil or under stones in natural habitats. In captivity, standard test tube setups or small formicaria should work well. The small worker size suggests using tight-fitting connections and good escape prevention.
• Behavior: Not documented for this species. Based on genus-level patterns, likely relatively docile with typical ant foraging behaviors. The small worker size (under 4mm) means escape prevention is critical, they can squeeze through very small gaps. No information on sting potency exists, but given their small size, any sting would be negligible to humans.
• Common Issues: no biological data means all care is experimental, start with conservative parameters and adjust based on colony response, small worker size creates high escape risk, use fine mesh barriers and tight-fitting lids, newly described species may have unknown specific requirements that differ from genus patterns, no established husbandry guidelines exist, be prepared to document and share your observations, winter diapause requirements are unconfirmed but likely necessary given temperate distribution

Discovery and Taxonomy

Prenolepis cyclopia was described in 2018 by Zhilin Chen and Shanyi Zhou based on workers collected from several nature reserves in eastern China ^[1]. The species name 'cyclopia' refers to the distinctive cylindrical appearance of its mesosoma (the middle body section between the head and abdomen). It closely resembles Prenolepis angularis but can be distinguished by its stout, long antennae that extend about half their length beyond the posterior margin of the head, and the finely longitudinally striated (grooved) mesopleuron and propodeum ^[1]. The type series was collected from Tianmu Mountain Nature Reserve in Zhejiang province at an elevation of 381 meters.

Appearance and Identification

Workers of Prenolepis cyclopia are small ants measuring 3.6-4.0mm in total length ^[1]. They have a striking two-tone coloration that makes them quite distinctive: the head and gaster (abdomen) are black, while the mesosoma, petiole, antennae, and legs are yellow to yellowish brown ^[1]. The head is slightly longer than broad with convex sides and posterior margin. The antennae are notably stout and long, with the scapes (the long first segments) extending about half their length beyond the back of the head ^[1]. The mesosoma is slender and strongly constricted at the metanotal groove, giving a wasp-waisted appearance. The gaster is large and gibbous (humpbacked), about twice the length of the head. The cuticle is mostly smooth and shining, though the mesopleuron and propodeum have fine longitudinal striations.

Distribution and Habitat

Prenolepis cyclopia is known only from eastern China, specifically Zhejiang, Guizhou, and Hunan provinces ^[1]. The type locality is Tianmu Mountain Nature Reserve in Zhejiang (coordinates 119°23.47'E,30°18.55'N) at an elevation of 381.3 meters ^[1]. Paratypes have been collected from Fanjing Mountain Nature Reserve in Guizhou (565.4m elevation), Heng Mountain in Hunan (344.4m), Leigong Mountain Nature Reserve in Guizhou (1009.2m), and Fengyang Mountain Nature Reserve in Zhejiang (276.1m) ^[1]. This distribution spans a range of elevations from 276m to over 1000m, suggesting the species can adapt to various altitudes within its range.

Known Biology and Care Considerations

Nothing is known about the biology of Prenolepis cyclopia, this species was only described in 2018 and has not been studied in the wild or in captivity ^[1]. This represents both a challenge and an opportunity for antkeepers: there are no established care guidelines, so every observation you make could be new information for the hobby. Based on its placement in the genus Prenolepis (which belongs to the tribe Lasiini in the subfamily Formicinae), it likely shares general care requirements with related ants like Lasius. These typically include moderate temperatures (18-24°C), moderate humidity, and likely a winter diapause period. The small worker size (under 4mm) means you should use excellent escape prevention with fine mesh barriers.

Genus-Level Expectations

Prenolepis is a small genus of ants closely related to Lasius, and they share many characteristics. Most Prenolepis species are small, ground-nesting ants that form moderate-sized colonies. Based on patterns from related genera, the queen is likely claustral, she seals herself in a chamber and lives off stored fat reserves while raising her first workers without leaving to forage. Colonies are likely single-queen (monogyne), though this has not been confirmed for P. cyclopia specifically. The workers are probably generalist foragers that collect honeydew and small insects, similar to Lasius. If you successfully keep this species, documenting your observations on colony development, founding behavior, and preferences would be valuable contributions to antkeeping knowledge. ^[1]

Frequently Asked Questions

References