Movement on the Soil Surface, of Adult Ctenicera aeripennis destructor (Brown) and Hypolithus bicolor Esch. (Coleoptera: Elateridae), as Indicated by Funnel Pitfall Traps, with Notes on Captures of other Arthropods

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Abstract
The two most important economic species of Elateridae in Saskatchewan are Ctenicera aeripennis destructor (Brown) and Hypolithus bicolor Esch. Adults of both species have been observed moving on the soil surface, but the extent and the seasonal duration of this movement has never been fully investigated.The activity of several species of wireworm adults has been studied by trapping with baits, or by collection from underneath various types of cover where they seek refuge (Hawkins 1936, Campbell and Stone 1939 and Cohen 1942). This type of trap however, gives no assurance that the beetles will stay under the refuge for any definite period, and docs not permit a quantitative estimate nf the population.