Prionoxystus robiniae

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Prionoxystus robiniae
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Cossidae
Genus: Prionoxystus
Species: P. robiniae
Binomial name
Prionoxystus robiniae
(Peck, 1818)
  • Cossus robiniae Peck, 1818
  • Xystus robiniae
  • Cossus crepera Harris, 1834
  • Cossus plagiatus Walker, 1856
  • Xyleutes querciperda Packard, 1864
  • Xyleutes crepera Packard, 1864
  • Cossus reticulatus Lintner, 1878
  • Prionoxystus quercus Ehrmann, 1893
  • Cossus zabolicus Strecker, 1898
  • Prionxystus robinae Barnes and McDunnough, 1911
  • Prionoxystus mixtus Barnes and Benjamin, 1923
  • Prionoxystus subnigrus Barnes and Benjamin, 1923
  • Prionoxystus flavotinctus Barnes and Benjamin, 1923

Prionoxystus robiniae, the carpenterworm moth or locust borer, is a moth of the Cossidae family.[1] It is found in North America, more specifically in southern Canada and most of the United States.

Male (right) and female (left)

The wingspan is 43-85 mm. Adults are on wing from May to July depending on the location.

The larvae feed on locust, oak, chestnut, poplar, willow, maple and ash. The species is considered a pest, because the tunnels the larvae create decrease the value of hardwood lumber.


  1. ^ "Entomology Collection > Prionoxystus robiniae". Retrieved 2011-12-19. 

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