Other Common Names
Native Ash Borer (vs. the
EAB)
Explanation of Names
Agrilus subcinctus Gory 1841
subcinctus (L). 'under girdled'
Range
e US to NM (NM-FL-NY-NE) -
Map (1)(2)Season
Adults most abundant between late May and early July in southern Michigan. (Haack & Petrice, 2009)
Food
Larvae host primarily in dead ash twigs -
Fraxinus (Oleaceae)
(1)
Reported feeding on poison ivy (
Toxicodendron radicans)
Illinois WildflowersLife Cycle
Biology of Agrilus subcinctus - Robert Haack & Toby Petrice, US Forest Service
Adults fed on ash foliage and laid eggs primarily on recently dead ash twigs. Larvae developed in the phloem of the dead twigs throughout the summer and fall and overwintered as larvae or pupae.
Populations of A. subcinctus increased primarily in areas with an abundance of recently dead ash trees. Given that emerald ash borer (EAB) is killing millions of ash trees, it should be expected that A. subcinctus populations will peak 1 to 2 years behind peak EAB populations. Although not documented yet, we expect A. subcinctus populations to collapse after the ash trees have been dead two or more years given that the phloem tissue will no longer be suitable for A. subcinctus development.
Remarks
at high-moderate risk of endangerment due to the
EAB (3)Internet References
Biology of Agrilus subcinctus - Robert Haack & Toby Petrice, US Forest Service
