Abstract
AbstractThe natural history and distribution of Dictyla echii (Schrank) (Hemiptera: Tingidae), a lace bug native to the Palaearctic, was investigated during 2014–2017 in southwestern Québec and southeastern Ontario, Canada. This apparently univoltine species is associated with Echium vulgare Linnaeus (Boraginaceae) and overwintered as adults in soil in a state of reproductive diapause. Eggs were almost entirely inserted in soft green stems and rarely in tissues of the upper leaf surface of the host plant. Adults and nymphs fed on rosettes, stems, and flower shoots, causing a chlorotic appearance of foliage, and stunted floral shoots. The external morphology of adults and immature stages are described and illustrated. Feeding, mating, oviposition, fecundity, incubation period, development of eggs in ovarioles, hatching of eggs, and emergence of first instars were studied and illustrated. The distribution of D. echii in North America and the Palaearctic is mapped.
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