Hazelnut-pest
Guides
Acrobasis normella
Acrobasis normella is a species of snout moth in the family Pyralidae, described by Harrison Gray Dyar Jr. in 1908. The species is associated with hazelnut hosts, with larvae feeding on American hazelnut (Corylus americana) and beaked hazelnut (Corylus cornuta). It is known from Ontario, Canada, and the central and eastern United States. Like other Acrobasis species, it likely has a concealed larval lifestyle within host plant tissues.
Curculio obtusus
Hazelnut Weevil
Curculio obtusus, commonly known as the hazelnut weevil, is a species of true weevil in the family Curculionidae. It is native to eastern North America and is one of four globally recognized hazelnut-feeding weevil species in the genus Curculio. The species is considered the most understudied of the hazelnut-feeding Curculio species, as commercial hazelnut production was historically not possible in its geographic range until the development of cold-hardy and disease-resistant hybrid hazelnut plants. It is expected to pose increasing economic concerns as hybrid hazelnut production expands in the United States.
Hyphantria cunea
Fall Webworm, Fall Webworm Moth, American White Moth
The fall webworm (Hyphantria cunea) is a moth native to North America, ranging from southern Canada through the United States to northern Mexico. It is best known for its larval stage, in which caterpillars construct large silken webs on the terminal branches of host trees during late summer and fall. The species exhibits two color races that vary geographically: white moths with black-headed caterpillars predominate in northern populations, while spotted moths with red-headed caterpillars are more common in the south. Accidentally introduced to Hungary in the 1940s, it has become a destructive invasive pest across Europe and Asia, particularly in China where it is known as the 'North American White Moth.'
defoliatorweb-forming-caterpillarinvasive-speciesnative-pestpolyphagousfreeze-avoiderthermoregulationbiological-control-targethazelnut-pestmulberry-pesturban-pestornamental-pestforest-pestagricultural-pestgregarious-larvaesilken-webNorth-American-nativeEuropean-invasiveAsian-invasiveviral-biocontrolparasitoid-hosthyperparasitismMyzocallis
Oak and Chestnut Aphids
Myzocallis is a genus of aphids (Aphididae) comprising over 40 species with diverse host associations. Species feed on woody plants including oaks (Quercus), chestnuts (Castanea), hazelnuts (Corylus), myrtle (Myrica), and milkweeds (Apocynaceae). The genus exhibits host-specificity at the species level, with some taxa restricted to single host genera. Several species are minor agricultural pests, particularly of hazelnut and chestnut. The genus has a cosmopolitan distribution with notable diversity in the Palearctic region.