Figure 2 from: Kotze D, Brandmayr P, Casale A, Dauffy-Richard E, Dekoninck W, Koivula M, Lovei G, Mossakowski D, Noordijk J, Paarmann W, Pizzoloto R, Saska P, Schwerk A, Serrano J, Szyszko J, Taboada Palomares A, Turin H, Venn S, Vermeulen R, Zetto Brandmayr T (2011) Forty years of carabid beetle research in Europe – from taxonomy, biology, ecology and population studies to bioindication, habitat assessment and conservation. ZooKeys 100: 55-148. https://doi.org/10.3897/zookeys.100.1523

Figure 2 - Different pitfall types. A = Jar or yoghurt can. B and C = traps with an outer can to make collecting of the sample easier. B = funnel trap with small jar. C = trap for moist biotopes (the outer can contains gravel or stones to prevent the can from being pushed up by groundwater). V = preservative (usually formaldehyde 3–4% or propylene glycol), S = stones or gravel.