Acropyga oreithauma
- Scientific Name
- Acropyga oreithauma
- Tribe
- Plagiolepidini
- Subfamily
- Formicinae
- Author
- LaPolla <i>et al.</i>, 2017
- Distribution
- Found in 1 countries
Acropyga oreithauma Overview
Acropyga oreithauma is an ant species of the genus Acropyga. It is primarily documented in 1 countries , including Panama. Detailed taxonomic data and occurrence records can be further explored via authoritative databases such as AntWeb or the Global Biodiversity Information Facility (GBIF).
Acropyga oreithauma
Acropyga oreithauma is a recently described ant species from Panama, notable for being the largest known Acropyga in the New World and the second largest globally, with workers reaching 3.66-4.02 mm [1]. Workers are yellow to darker yellow with a distinctive dense pubescence covering their body, and they have 8-segmented antennae [1]. This species was discovered in montane wet forest at 840m elevation in Cerro Azul, Panama, where it was found nesting under stones [1]. The most remarkable aspect of this species is its trophobiotic relationship with the mealybug Neochavesia caldasiae, these ants and mealybugs live in a mutualistic partnership where the ants protect the mealybugs and tend them for the honeydew they produce [1].
Quick Summary
- Difficulty: Unknown, no established husbandry data
- Origin & Habitat: Panama (Cerro Azul) at 840m elevation in montane wet forest [1]
- Colony Type: Unknown, queen and male have not been described [1]
- Size & Growth:
- Antkeeping:
- Temperature: Inferred from montane wet forest habitat, likely prefers moderate temperatures around 20-25°C with stable humidity. Start in this range and observe colony activity [1].
- Humidity: Montane wet forest suggests high humidity needs, aim for 70-85% relative humidity. Keep substrate consistently moist but not waterlogged [1].
- Diapause: Unknown, tropical species may not require true hibernation but may have seasonal activity changes
- Nesting: Found under stones in nature, naturalistic setups with moist substrate, flat stones, or Y-tong nests with tight chambers work well. The cryptic nature of these ants means they may prefer hidden, dark spaces [1].
- Behavior: This species is known for its trophobiotic relationship with mealybugs, they tend and protect Neochavesia caldasiae for honeydew [1]. Workers are likely to be docile given their farming lifestyle. Escape risk is moderate due to their size (3.66-4.02mm), standard escape prevention measures should suffice. Their cryptic nature makes them difficult to find and observe in the wild [1].
- Common Issues: No established husbandry guidelines exist, this is a newly described species with limited research, Queen and male are unknown, making colony founding and reproduction details unclear, Mealybug partners may be required for successful husbandry, these specialized mutualistic relationships can be difficult to maintain in captivity, The trophobiotic diet means sugar sources alone may not be sufficient, mealybug or aphid partners likely needed, Montane origin suggests specific humidity requirements that may be challenging to replicate
Discovery and Identification
Acropyga oreithauma was only described in 2017 by LaPolla, Williams, and Fan, making it one of the most recently described ant species in the New World [1]. It was discovered in Cerro Azul, Panama, at an elevation of 840 meters in montane wet forest [1]. The species name comes from Greek, 'oros' meaning mountain and 'thauma' meaning wonder, referring to its discovery in mountainous terrain [1]. What makes this species immediately recognizable is its size, workers reach 3.66-4.02mm, making it the largest Acropyga in the Americas and the second largest in the world after Acropyga rubescens [1]. The workers have distinctive yellow coloration with dense pubescence covering their body,8-segmented antennae, and 4 mandibular teeth (sometimes with a smaller fifth tooth) [1].
Trophobiotic Relationship with Mealybugs
One of the most fascinating aspects of Acropyga oreithauma is its mutualistic relationship with the mealybug Neochavesia caldasiae [1]. This relationship, called trophobiosis, is where the ants protect and tend the mealybugs, and in return, the ants feed on the honeydew that the mealybugs produce [1]. This same mealybug species has also been found in trophobiotic relationships with other Acropyga species including Acropyga exsanguis and Acropyga fuhrmanni [1]. For antkeepers, this means this species likely requires honeydew sources to thrive, either through live mealybug or aphid partners, or through sugar water/honey substitutes [1]. The mealybugs live among the ants and are tended like livestock, representing a specialized feeding ecology that differs from typical ant species.
Natural Habitat and Nesting
In the wild, Acropyga oreithauma has been found under stones in montane wet forest at 840m elevation in Panama [1]. The montane wet forest habitat suggests these ants prefer cooler temperatures than typical lowland tropical ants, with high humidity and stable moisture conditions [1]. The researchers noted the cryptic nature of these ants, they are difficult to discover unless specifically looking for Acropyga or using specialized soil and leaf litter collection techniques [1]. This suggests they spend much of their time hidden in dark, concealed spaces underground or under objects. For captive care, this points to the importance of providing dark, humid nesting areas with minimal disturbance.
Related Species and Taxonomy
Acropyga oreithauma is considered likely closely related to Acropyga exsanguis and Acropyga fuhrmanni based on morphological analysis [1]. It was placed in the newly established smithii species-group in 2023,along with other related species [2]. This species group is characterized by workers having 8 antennal segments and 4 mandibular teeth (occasionally with a smaller tooth between the 3rd and basal teeth) [2]. The species is considered a possible sister species to Acropyga fuhrmanni [2]. Understanding these relationships helps antkeepers know what related species might share similar care requirements, other Acropyga species are also typically trophobiotic and have similar relationships with mealybugs.
Current Knowledge Gaps
Despite being described in 2017,Acropyga oreithauma remains one of the least studied ant species in captivity. The queen and male castes have not been described, meaning we have no information about colony structure (monogyne vs polygyne), founding behavior, or reproduction [1]. Colony size in the wild is unknown, and development timelines from egg to worker have not been documented [1]. This represents both a challenge and an opportunity for antkeepers, there is much to learn about this species in captivity, and successful husbandry would contribute valuable knowledge to the antkeeping community. The specialized trophobiotic lifestyle may present challenges for long-term captivity, as maintaining healthy mealybug populations requires specific conditions.
Frequently Asked Questions
How big do Acropyga oreithauma workers get?
Workers are 3.66-4.02mm in total length, making this the largest Acropyga species in the New World and the second largest globally after Acropyga rubescens [1].
What do Acropyga oreithauma ants eat?
Based on their trophobiotic relationship with mealybugs, they likely feed primarily on honeydew produced by their mealybug partners (Neochavesia caldasiae). In captivity, you would need to provide sugar sources (honey water, sugar water) and likely maintain live mealybug or aphid colonies for them to tend [1].
Where does Acropyga oreithauma come from?
This species is known only from Panama, specifically from Cerro Azul at 840m elevation in montane wet forest [1].
Are Acropyga oreithauma good for beginners?
No, this species is not recommended for beginners. It is a newly described species (2017) with no established husbandry guidelines. The specialized trophobiotic diet requiring mealybug partners, specific humidity needs from montane habitat, and many unknown aspects of care make it suitable only for experienced antkeepers interested in advancing knowledge of rare species.
Do Acropyga oreithauma queens need to hibernate?
Unknown, as a tropical species from Panama, true hibernation is unlikely, but they may have seasonal activity changes related to wet/dry seasons in their montane habitat [1].
How long does it take for Acropyga oreithauma to develop from egg to worker?
Unknown, the development timeline has not been studied or documented. No data exists on egg-to-worker development time for this species [1].
What temperature should I keep Acropyga oreithauma at?
Not confirmed, but inferred from montane wet forest habitat, aim for moderate temperatures around 20-25°C with stable humidity. Start in this range and adjust based on colony activity and health [1].
Can I keep multiple Acropyga oreithauma queens together?
Unknown, the colony structure (monogyne vs polygyne) has not been determined because the queen has not been described. Combining unrelated queens is not recommended given the lack of information on their social structure [1].
What humidity do Acropyga oreithauma need?
Based on montane wet forest habitat, they likely require high humidity around 70-85%. Keep substrate consistently moist but not waterlogged, with good ventilation to prevent mold [1].
What nest type is best for Acropyga oreithauma?
Found under stones in nature, suggesting they prefer dark, concealed spaces. Y-tong nests with tight chambers or naturalistic setups with moist substrate and flat stones work well. Provide dark nesting areas with minimal disturbance [1].
Why is Acropyga oreithauma so rare in the antkeeping hobby?
This species was only described in 2017 and has a very limited natural distribution in Panama's montane forests. The cryptic nature of the ants makes them difficult to find, and the specialized trophobiotic requirements make them challenging to keep. Additionally, the queen has never been described, so no cultured colonies exist in the hobby [1].
References
This caresheet is licensed under CC BY-SA 4.0 .
No specimens available
We couldn't find any AntWeb specimens for Acropyga oreithauma in our database.
Literature
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