Prionus borers
Insect
Prionus borers
Prionus laticollis (Drury) Prionus imbricornis (L.)
Coleoptera: Cerambycidae
Distribution: Most fruit-growing states and provinces in eastern North America.
Photos
Larvae feed on root and crown wood which they hollow, girdle or sever.
Arthur Agnello, Cornell Univ.
D
Broadnecked root borer, Prionus laticollis (Drury) Tilehorned prionus, Prionus imbricornis (L.) Adults are robust, broad, somewhat flattened blackish to reddish brown beetles with antennae roughly half the length of their bodies (A). Larvae are large, fleshy, elongate grubs, creamy white to yellowish in color, with 3 pairs of small legs, a swelling behind the small head capsule, and strong black mandibles (B).