Phenology of the Dalmatian Toadflax Biological Control Agent Mecinus janthiniformis (Coleoptera: Curculionidae) in Utah

2017 ◽  
Vol 47 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Samantha A Willden ◽  
Edward W Evans
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Control Agent ◽  
Dalmatian Toadflax

External rostral characters for differentiation of sexes in the biological control agent Mecinus janthinus (Coleoptera: Curculionidae)

2007 ◽  
Vol 139 (3) ◽  
pp. 354-357 ◽  
Author(s):  
Marjolein Schat ◽  
Sharlene E. Sing ◽  
Robert K.D. Peterson
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Sex Differentiation ◽  
Classical Biological Control ◽  
Control Agent ◽  
Invasive Weed ◽  
Linaria Dalmatica ◽  
Mecinus Janthinus ◽  
Exotic Invasive ◽  
Dalmatian Toadflax

AbstractThe stem-boring weevil, Mecinus janthinus (Germar), is a promising, well established classical biological control agent for the exotic invasive weed Dalmatian toadflax (Linaria dalmatica (L.) Mill.) (Scrophulariaceae). In this paper we present readily apparent rostral characters that can be used for sex differentiation of live stem-boring weevils at low magnification. These characters can be used by workers with little training to accurately sex weevils and can be used to rapidly determine sex ratios of field populations to improve timing of collection for redistribution.

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