Canadian Journal of Arthropod Identification

Identification of Delia pest species (Diptera: Anthomyiidae) in cultivated crucifers and other vegetable crops in Canada

CJAI 29 -- June 29, 2016

Jade Savage, Anne-Marie Fortier, François Fournier, Véronique Bellavance

| Abstract | Introduction | DNA Barcoding | Larval Host Associations | Checklist | Keys to Delia pests | Acknowledgments | References | PDF | Cite |


Keys to Delia pests of cultivated crucifers and other vegetable crops in Canada

Botanophila fugax (Meigen) is an anthomyiid species associated with decaying plant matter (Ferrar 1987, p. 72 as Pegohylemyia fugax) whose immature stages are quite distinctive from those of Delia species included in the present work (see Brooks 1951 and Miles 1952 for descriptions of immature stages (as Pegohylemyia fugax)). However, the adults (and especially the females) are remarkably similar to those of certain Delia species. According to Brooks (1951), B. fugax is only occasionally encountered on cruciferous crops in Canada. The examination of  3220 adults caught by conical traps and sticky traps and more than 3500 larvae collected in various Allium (green and yellow onions) and cruciferous crops (radish, Napa cabbage, broccoli, cauliflower) in southern Québec, Canada, in the summer of 2015 (Fig. 2) yielded only 15 adults of B. fugax (0.5%) and no larvae. Botanophila fugax is therefore distinguished from Delia spp. only in the key to adults in the present work.

Key to adults
(En Français)

Key to larvae
(En Français)

Key to puparia
(En Français)

Key to eggs
(En Français)