Hollyhock Sawfly – Neoptilia malvacearum

Hollyhock Sawfly – Neoptilia malvacearum Common Name: Hollyhock Sawfly Latin Name: Neoptilia malvacearum Appearance: The adult Hollyhock Sawfly is a small, black, and yellow wasp-like insect. The larvae are green and caterpillar-like with a darker head. Egg: The eggs of the Hollyhock Sawfly are small and white. Pupa: The pupa is brown and about 6 mm in length. Larva: The larvae of the Hollyhock Sawfly are green and caterpillar-like with a darker head. When fully grown, they are about 2 cm long. Adults: The adult Hollyhock Sawfly is a small, black, and yellow wasp-like insect. They are about 6-8 mm in length. Host plant: The Hollyhock Sawfly feeds primarily on hollyhock plants. Territory: The Hollyhock Sawfly is found in North America, primarily in the eastern and central regions. Damages caused by Hollyhock Sawfly: The larvae of the Hollyhock Sawfly feed on the leaves of hollyhock plants, causing damage to the foliage. Severe infestations can cause defoliation, which can impact the health and growth of the plant. Life history and Habits: The Hollyhock Sawfly undergoes complete metamorphosis, with four life stages: egg, larva, pupa, and adult. The eggs are laid on the undersides of hollyhock leaves, and the larvae hatch and begin feeding on the leaves. The larvae feed for several weeks before pupating in the soil. After pupation, the adult sawflies emerge and mate, starting the cycle again. The Hollyhock Sawfly is active from May to August, with one generation per year. They are most active during the day and can be seen flying around hollyhock plants.