When the lice leave their host they may be easily caught on the paper. Domestic animals in pastures attract several species of flies. Look in and under the excrement of domestic animals in pasture fields for dung beetles and other insects. Collect pupae from as wide a range as possible. Confine in roomy containers and watch for the adults to emerge.
Winter is a particularly good time to collect many pupae.
Larvae of many insects, especially moths and butterflies, can be raised until the adults mature from them. This is the best way to get perfect specimens. When driving in an open car insects collide with the various parts of the interior and drop in the seats. They are often quiet for a time and may he bottled easily. Examine the windows of buildings.