Aleochara bilineata is a species of rove beetle that lives in sub-tropical and cold tolerant climates throughout the world.

[4] The eggs of A. bilineata are oval and covered with gelatin-like material which at first is a pale green color but turns darker later on.

Before winter, female A. bilineata lay tiny, white elliptical eggs, which are deposited in the soil of crops that attract pests.

During winter periods, A. bilineata live as parasites inside of a wide variety of host pupae.

[5] Females use varying factors to determine clutch size and where they lay their eggs, including the presence of a host and absence of predators.

Once the mobile A. bilineata larva emerges from the egg, it then searches the area around it for a suitable fly pupa.

[3][5] After the beetle locates a suitable host, it gnaws through the puparium of the fly and closes the hole it made by excreting a viscous substance through its anus, which acts as a plug.

Despite their solitary nature, A. bilineata larvae are able to discriminate kin and can perform altruistic behavior for their siblings.

[3] One evolutionary reason why A. bilineata display kin recognition could be that there are frequent encounters between larvae and kin-parasitized hosts.

[7] In addition, there is a strong correlation between an increase in weeds and other plants in areas where A. bilineata reside and a decrease in population density of the beetles.

It is thought that some of the responses to infochemicals are the result of learning or conditioning of individuals to the attractants produced by maggots.

As a result, these beetles have been mass-produced by humans and released when maggots start to emerge from their nests.

This, compounded with adult beetles being able to consume up to five maggot larvae per day, provides for an efficient method to control pests.

As a result, other common insects are often chosen instead, including a different species of rove beetle that is currently commercially available.