Behavioral time budgets were constructed for larval black flies of the Simulium jenningsi and S. tuberosum groups in a recirculating flume.

The Simulium molestum (Fig.

They are simuliums of the family Nemocera of the system of Latreille.

This difference between mosquito (little fly, simulium) and zancudo (gnat, culex) exists in all the Spanish colonies.

* (* M. the genus Simulium (Atractocera meigen.)