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BiologyThe delta green ground beetle, like many of its neighbours, synchronises its lifecycle with the seasonal changes in its habitat (2) (3). Adults are active in winter and early spring, when pools are wet, laying their eggs between January and April (3). When the pools dry up in the summer, the beetles enter an inactive phase called a diapause, in which they bury themselves underground and await the next rainy season (5) (6). The hatching larvae also burrow into the moist clay for food and shelter and spend the hot summer under the soil (3). The larvae then pupate in autumn and emerge as adults in the cool of winter (2) (3). Both larvae and adults are active predators, spending most of the day searching out small invertebrates such as midge larvae (Diptera) and springtails (Collembola) (2) (4).