English to Polish Science Botany

Wydaje mi się, że może chodzić o jakąś nakrywkę z siatki, która zapobiega ucieczce owadów i przepuszcza powietrze, ale nie mam pewności. Może jest jakaś fachowa nazwa?

Fo evaluating control of the western flower thrips (Frankliniella occidentalis) through contact and/or systemic means, the test unit consisted of a small open container with a 5-7 day old Soleil Bean plant inside. Test compounds were formulated and sprayed at 250 and/or 50 ppm, and the test was replicated three times as described for Test A.
After spraying, the test units were allowed to dry for 1 hour and then 22-27 adult thrips were added to each unit and
then a black, screened cap was placed on top. The test units were held for 6 days at 25 ˚C and 45-55% relative humidity. A mortality rating was assessed along with a plant damage rating for each test unlit.