Queen Ant Identification
Just caught a queen during a nuptial flight? Use this guide to identify your species by size, color, and body features. Browse diagnostic photos, then find care guides and live listings for your species.
Quick ID by Size & Color (Europe)
Browse All Species (267)
Full directory →Common Questions
How do I identify a queen ant?
Queen ants are larger than workers, have a noticeably larger thorax (mesosoma) from where wings were attached, and often have a rounded, bulbous gaster (abdomen). After a nuptial flight, queens lose their wings — look for wing stubs (wing scars) on the thorax. Workers are smaller and have a narrower, more uniform body shape.
What do I do with a queen ant I just caught?
Place the queen in a test tube setup: fill a test tube about one-third with water, plug with cotton wool, then add another cotton plug to create a dark chamber. The queen will lay eggs within days to weeks. Keep her in a dark, warm (22–26 °C) location and do not disturb her. Do not feed claustral queens during founding — they live off their fat reserves and wing muscles.
How can I tell what species my queen ant is?
Key identification features are: body size (measure in mm), color (black, brown, reddish, bicolored), thorax shape (especially the propodeum profile), petiole and post-petiole shape, and geographic location where caught. Compare against diagnostic photos on species pages. Common beginner species in Europe: Lasius niger (black, 8–9 mm), Myrmica rubra (reddish, 5–6 mm), Camponotus ligniperda (black with reddish thorax, 14–18 mm).
When is flying ant day?
In the UK, "flying ant day" refers to the peak nuptial flight of Lasius niger (black garden ant), typically occurring in late July to early August during warm, humid weather following a period of rain. It is not a single day — flights occur across multiple days and weeks. In Central Europe, Lasius niger flights peak in July–August. In the Mediterranean, Messor barbarus flies in September–October.
Is it legal to keep the queen ant I caught?
In most countries, keeping native ant species caught locally is legal for personal hobby use. However, interstate or international movement of ants requires permits in many jurisdictions (e.g., USDA APHIS PPQ 526 in the US). Some species are protected — notably Formica rufa (red wood ant) in Germany under BNatSchG § 44. Always check local regulations before purchasing or shipping ants across borders.