Why are Hymenoptera scarce in polar regions?

Hymenoptera are scarce in polar regions primarily due to the extreme environmental constraints that limit the activity and survival of insects in these areas.1

The short summer season in polar regions provides only a brief window during which insects can be active, grow, and reproduce. Because Hymenoptera—like other insects—require appropriate temperatures and adequate nutrition to support mating and egg production, the harsh, cold climate of the Arctic and Antarctic creates significant biological limitations.12

Furthermore, the low productivity of polar ecosystems results in a lack of complexity and stability, making it difficult for many species to maintain viable populations. While some Hymenoptera, such as honeybees, have evolved complex social behaviors like forming winter clusters to generate heat, these strategies are generally insufficient to overcome the prolonged, extreme cold and lack of resources found in polar barrens. Consequently, the environmental conditions in these regions fall outside the biological requirements necessary for most Hymenopteran life cycles to persist.132