Abstract
In 2019,
Cactodera milleri
cysts were discovered from soil samples collected from a
Chenopodium quinoa
field, located in Mosca, Alamosa county, Colorado, USA. Approximately 200 lemon shaped cysts and several hundred juveniles were recovered from the affected quinoa plants. The same species was also identified from several counties in Minnesota from samples submitted over the years by the Minnesota Department of Agriculture as part of the Animal and Plant Health Inspection Service (APHIS) efforts to survey states for the presence of Pale Potato Cyst Nematode. The cysts and juveniles (J2) were recovered from soil samples through sieving and Baermann funnel extraction. The nematode species was identified by both morphological and molecular means as
Cactodera milleri
(Graney and Bird, 1990). To our knowledge this represents the first report of
Cactodera milleri
from Colorado and Minnesota.