Rose curculio—Rhynchites bicolor
The adult rose curculio is a red to black snout weevil, 0.25 inch long. Small, whitish larvae occur in
Weevils cause ragged blossoms and punch holes in flowers and canes.
Avoid yellow and white roses apparently preferred
by the beetle. Handpick adults and destroy infested buds.
Rose curculio is usually not a serious pest and usually should
not require treatment. However, a broad-spectrum synthetic
pesticide, such as carbaryl can
be applied when adults are seen if infestations are severe.
Female rose curculio beetle adult, drawing by Chittenden, 1901