Kozár, F. 1990a 3.4.2 Sampling and census-taking.. Armored Scale Insects, Their Biology, Natural Enemies and Control [Series title: World Crop Pests, Vol. 4B]. Elsevier Amsterdam, the Netherlands 688 pp.

Notes: Abstract: Distribution surveys; uses of survey reviewed; table showing most common feeding sites (plant parts) for 17 important pest scale species; review of sampling methods for forecasting infestations in fields or orchards and for individual trees; ecological studies; plant protection studies; quarantine exmainations; list of species with corresponding plant parts most appropriate for sampling; discussion of ways to present data; concludes that reliable collecting and surveying techniques have not been devised yet.