Difficulty

Beginner-Friendly. Crematogaster lineolata is one of the most approachable and rewarding ant species for Canadian keepers. They establish quickly, tolerate minor husbandry variation well, and their naturally polycolonial structure makes them exceptionally interesting to keep at any experience level. New keepers will find this species forgiving and fast-moving, while experienced hobbyists will appreciate how much personality and complexity fits into such a small ant.

Overview

Crematogaster lineolata, commonly known as the Polycolonial Acrobat Ant, is a small, fast-growing ant native to eastern North America and widely distributed across Canada. Like all Crematogaster, workers are immediately recognizable by their distinctive heart-shaped gaster, which they curl dramatically upward over their bodies when alarmed or communicating. But what makes C. lineolata particularly special is its polycolonial nature: colonies naturally maintain multiple queens, and under the right conditions, separate colonies can merge and cooperate rather than compete.

This species is one of the most socially complex Canadian natives available to keepers. Rather than a single queen building a colony in isolation, C. lineolata thrives in networks of related queens, producing fast-growing colonies with a natural resilience that single-queen species simply cannot match. A well-established colony is visually busy, frequently active, and genuinely different in character from anything a single-queen species can offer.

Species Behaviour

Crematogaster lineolata workers are fast-moving, curious, and highly visible. The characteristic gaster-raising display — the acrobatic curl that gives the genus its common name — occurs frequently, whenever workers investigate disturbances or communicate with nestmates. Workers are confident explorers and will rapidly investigate any new outworld addition or environmental change.

Colonies are notably assertive and active — workers move with purpose and establish clear foraging lanes quickly. They are active throughout the day and into the evening, making them one of the most consistently visible display species in the hobby. The polygynous colony structure produces a collective energy that single-queen species rarely match: workers are constantly busy, brood development is fast, and the colony feels genuinely alive at almost any size.

Diet

Crematogaster lineolata requires both a liquid sugar source and small protein. Honey-water, sugar-water, or QNC Honey Nectar all work well as carbohydrate sources and should be available consistently. Protein should be appropriately sized for these small ants — fruit flies (Drosophila melanogaster and D. hydei), peanut beetle cultures, and other small invertebrates are ideal options.

Feed in small amounts and remove leftovers promptly. Like other Crematogaster, this species is sensitive to mould, and uneaten protein left in the outworld can cause problems quickly. A routine of small, regular offerings is preferable to infrequent large ones. Sugar sources can be refreshed every two to three days or as needed.

Founding Type

Crematogaster lineolata queens are fully claustral. After mating, the queen seals herself into a founding chamber and raises her first workers entirely from her own metabolic reserves. No food is required during the founding phase — only access to moisture. Keep the founding test tube hydrated, dark, and undisturbed. Once the first workers are present and foraging inside the tube, introduce small protein and sugar offerings at the tube entrance.

Because this species is naturally polygynous and polycolonial, multiple founding queens can often be housed together from the start — this is one of the few North American species where co-founding by multiple queens is not only possible but biologically natural. Multi-queen variants (2Q, 3Q, 5Q) are set up with queens that can be kept together, accelerating early brood development significantly compared to single-queen founding.

Colony Structure

Crematogaster lineolata is naturally polygynous and polycolonial. Unlike monogynous species where a single queen is the sole reproductive individual, this species regularly maintains multiple egg-laying queens within the same colony. Multiple founding queens cohabitate peacefully, and as the colony grows, additional mated queens may be accepted rather than expelled.

The polycolonial trait is equally distinctive: separate colonies of this species can merge under natural conditions, with workers and queens from different nests coexisting and cooperating rather than competing. This means well-established colonies can become highly populous in a relatively short timeframe compared to single-queen species. Keepers starting with multiple queens will see this social structure in action immediately — multiple queens laying simultaneously, rapid brood development, and colony growth that outpaces almost any equivalent single-queen species.

Queen & Worker Sizing

Queens measure approximately 4–6 mm in length. Workers range from 2–4 mm. Crematogaster lineolata is a genuinely small ant, and this is an important consideration when selecting housing. All gaps, lid seals, outworld connections, and feeding ports must be carefully checked before introducing the colony. A thin layer of fluon or similar ant-barrier product applied to outworld walls is a practical and recommended precaution. The small worker size also means the colony is best observed in a well-lit setup where the heart-shaped gaster and gaster-raising display can be seen clearly.

Growth / Mature Colony Size

Crematogaster lineolata grows quickly relative to most Canadian native species, particularly when kept with multiple queens. Single-queen colonies develop at a steady pace through the founding and early growth stages. Polygynous colonies with two or more queens expand noticeably faster — multiple queens laying simultaneously accelerates brood development and worker output significantly.

With multiple queens and consistent care, mature colonies can reach tens of thousands of workers — making this one of the highest-potential colony sizes available from a small North American native. Even young multi-queen colonies establish visible, active foraging patterns relatively quickly once they have moved past the founding stage and into open foraging.

Diapause / Hibernation

A winter cooling period is beneficial for Crematogaster lineolata and is recommended for long-term colony health. As a temperate Canadian native, this species has evolved to experience cold winters, and a seasonal cooling cycle supports brood development rhythms and queen longevity over multiple years of captive care.

Cooling should be gradual. Reduce temperatures slowly over several weeks in autumn, targeting a diapause temperature of approximately 10–15°C. Maintain cooling for 2–3 months, then gradually return to active temperatures in late winter or early spring. During diapause the colony will become largely inactive — keep moisture levels maintained and leave the colony undisturbed. Very young founding colonies and recently established multi-queen groups should not be cooled in their first season; wait until at least 10 workers are present and the colony is clearly stable before their first diapause.

Temperature & Humidity

Active season temperatures of 22–27°C are appropriate for C. lineolata. The species does well at room temperature in most Canadian homes during warmer months without supplemental heating. If ambient temperatures drop below 20°C regularly, gentle heating to the lower end of the recommended range will support colony activity and brood development.

Maintain a humidity level of approximately 50–65% in the nest area, with a moisture gradient across the formicarium. Keep part of the nest moist and allow a drier zone toward the outworld side. The founding test tube should have a moist cotton plug end with a dry air gap on the colony side. Avoid saturating the setup — excess moisture combined with food debris is the primary mould risk for this species.

Recommended Setup

Begin with the included hydrated test tube setup. For multi-queen starts (2Q, 3Q, and 5Q variants), the queens can be housed together in the same tube from arrival. Keep the setup dark and undisturbed until the first workers have eclosed and the colony is moving freely inside the tube. Do not transfer to a larger setup until at least 10–20 workers are present and the colony is clearly established.

Once the colony has enough workers to begin open foraging, transition to a small QNC modular formicarium with a connected outworld. Because C. lineolata is a small ant, ensure all chamber sizes, outworld lids, and connection tubing are appropriately scaled. Apply fluon or ant-barrier product along outworld walls before introducing the colony — this is an active, fast-moving species and escape prevention is important.

As the colony grows — particularly for multi-queen colonies that expand faster — the QNC modular system makes adding nesting space straightforward. Connect additional nest units without disturbing the full colony. Polygynous colonies that grow rapidly will benefit from incremental expansion rather than being placed into a large, mostly empty setup early in their development.

Best For

• Beginners who want a fast-growing, forgiving species with immediate visual appeal
• Keepers interested in multi-queen and polycolonial colony dynamics
• Those who want a highly active display species with frequent, visible behaviour
• Keepers who have kept C. cerasi and want a more complex, faster-growing species
• Anyone interested in observing natural polygyny and cooperative colony behaviour
• Setups where a high-activity, constantly visible colony is the goal

Important Notes

• Small ant — carefully check all setup gaps, lid seals, and connection points before introducing the colony
• Apply fluon or ant-barrier product to outworld walls; this species is an active explorer
• Keep the founding test tube properly hydrated; do not allow the cotton plug to dry out completely
• Provide a winter cooling period of 2–3 months for long-term colony health; omit only for very new colonies in their first season
• Feed appropriately sized prey — fruit flies and peanut beetle cultures are ideal; avoid large feeder insects
• Remove uneaten protein promptly; this species is sensitive to mould
• Multiple queens can be housed together from arrival — co-founding is natural and encouraged for this species
• Inventory is tracked per variant, not as a shared queen pool — adjust quantities manually after each sale

What's Included

• 1× Crematogaster lineolata colony as per the selected variant (queen count and worker count as specified)
• 1× 16 × 125 mm hydrated test tube setup with cotton plug
• Protective bubble wrapping for shipping