Our insect of the week for September 8, 2025, is Epicauta funebris Horn, 1873. [COLEOPTERA: Meloidae]. It is commonly called the margined blister beetle. As with August, I thought it appropriate to focus on another beetle family for most of September and early October. This species is found in North America and is native to central Illinois.

Adults are often observed in mid to late summer in central Illinois. Peak numbers of observations appear to be late July. Females lay eggs in the soil (often in clusters). The first instar larvae (known as triungulins) are highly mobile and actively seek out grasshopper egg pods or bee nests. This is true for many beetles in this family. Once located, the larvae becomes more sedentary and grub like and feeds on the eggs. Mature larvae remain in the soil and pupate in early spring. Adult beetles are attracted to flowering plants. They typically feed on nectar, pollen and leaves.

The insect in this photograph was collected by former member Jeri Simmons in Peoria County, Illinois nearly 50 years ago. The image was generated by stacking multiple photos together to make this high resolution composite image.