Carpenterworm Moth
Prionoxystus robiniae (Peck, 1818)
Family: Cossidae
Subfamily: Cossinae
Identification: Forewing in female mottled gray and blackish, slightly translucent. Forewing in male less sharply mottled. Hindwing yellow with black outer border in male; no yellow in female.
Wing Span: 4.3-8.5 cm. Female larger than male.
Life History: Larva bores into wood, and the life cycle takes 3-4 years. Larval tunnels decrease the value of hardwood lumber.
Flight: April-October, mostly June-July.
Caterpillar Hosts: Ash, chestnut, locusts, oaks, poplars, willows, and other trees.
Adult Food:
Habitat:
Range: Throughout eastern North America.
Conservation:
NCGR:
Management Needs:
Comments: NULL
Alternate Scientific Names:
Prionoxystus robinae
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Verified Sightings
Displaying 1 - 24 of 246 verified sightings
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/carpenter_worm_moth_6-17-24_img_4130.jpg?itok=SJ5H3ZEf)
Observation date: Jun 17, 2024
Submitted by: Tommie Rogers
Region: Hamilton County, Tennessee, United States
Verified by: rogerdowner
Verified date: Jun 17, 2024
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/img_4047_10.jpg?itok=CXf-dsVb)
Observation date: Jun 15, 2024
Submitted by: jrtindall
Region: Mercer County, New Jersey, United States
Verified by: curtis.lehman
Verified date: Jun 16, 2024
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/20240526_002718.jpg?itok=WHkJRuFN)
Observation date: May 26, 2024
Submitted by: Steven Wilson
Region: Hampshire County, West Virginia, United States
Verified by: curtis.lehman
Verified date: May 26, 2024
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/d72_9043s.jpg?itok=ioEGxIT4)
Observation date: Jun 18, 2017
Submitted by: SaratogaGap
Region: Santa Cruz County, California, United States
Verified by: mcduck
Verified date: Dec 20, 2023
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/img_4021_1_1.jpg?itok=Q2_V6_ed)
Observation date: Nov 13, 2023
Submitted by: John Gibbons
Region: Pinellas County, Florida, United States
Verified by: curtis.lehman
Verified date: Nov 15, 2023
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/carpenterworm_7-4-23_img_2355.jpg?itok=mInYHv_-)
Observation date: Jul 04, 2023
Submitted by: Tommie Rogers
Region: Marion County, Tennessee, United States
Verified by: rogerdowner
Verified date: Jul 15, 2023
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/1689114860046.jpg?itok=R5WsY0ae)
Observation date: Jul 10, 2023
Submitted by: Alienj
Region: Boone County, West Virginia, United States
Verified by: curtis.lehman
Verified date: Jul 11, 2023
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/pxl_20230624_140149342.jpg?itok=dEkfdJ0G)
Observation date: Jun 24, 2023
Submitted by: Bpelletier
Region: Kankakee County, Illinois, United States
Verified by: rogerdowner
Verified date: Jun 25, 2023
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/carpenterworm_moth.jpg?itok=xdZJxeOK)
Observation date: Jun 10, 2023
Submitted by: jrtindall
Region: Mercer County, New Jersey, United States
Verified by: curtis.lehman
Verified date: Jun 12, 2023
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/20230525_082944.jpg?itok=-Kn_4gQJ)
Observation date: May 25, 2023
Submitted by: Donnadirect
Region: Gem County, Idaho, United States
Verified by: J_Martineau
Verified date: May 30, 2023
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/img_5370.jpeg?itok=n-iIycAp)
Observation date: May 15, 2023
Submitted by: jrfleullan
Region: Effingham County, Georgia, United States
Verified by: Mikelchap
Verified date: May 20, 2023
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/dsc08906_carpenterworm_moth_5.19.23.jpg?itok=0V535uLN)
Observation date: May 19, 2023
Submitted by: Ann Shapiro
Region: Wilson County, Tennessee, United States
Verified by: rogerdowner
Verified date: May 19, 2023
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/4eb8b069-3044-44ce-8c7d-7e28232db896.jpeg?itok=iUMld2_D)
Observation date: Jun 03, 2022
Submitted by: plawryniuk
Region: Maricopa County, Arizona, United States
Verified by: kellyrichers
Verified date: Sep 26, 2022
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/carpenterworm_moth_2021-6-4_home_3.jpg?itok=dxWxt2zw)
Observation date: Jun 04, 2021
Submitted by: Eric Wood
Region: Boone County, Missouri, United States
Verified by: jamesdurbin
Verified date: Sep 11, 2022
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/p1110213.jpg?itok=I7I7riag)
Observation date: Jul 22, 2022
Submitted by: Dwaine Wagoner
Region: Natrona County, Wyoming, United States
Verified by: J_Martineau
Verified date: Jul 23, 2022
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/img_2074_2_1.jpg?itok=ySdhdzCk)
Observation date: Jul 16, 2022
Submitted by: JMJaskula
Region: Newton County, Indiana, United States
Verified by: rogerdowner
Verified date: Jul 18, 2022
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/robins_carpenterworm_prionoxystus_robiniae.jpeg?itok=7Yxe8rcK)
Observation date: Jun 15, 2022
Submitted by: cskipper
Region: Garrett County, Maryland, United States
Verified by: rogerdowner
Verified date: Jul 13, 2022
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/07b13ea8-8ac6-4cf7-a25a-407e2d8cc719.jpeg?itok=qpS6VMab)
Observation date: Jul 08, 2022
Submitted by: TJ in Derry
Region: Rockingham County, New Hampshire, United States
Verified by: rogerdowner
Verified date: Jul 09, 2022
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/img_6716_2_3.jpg?itok=NRNqxY6t)
Observation date: Jun 04, 2022
Submitted by: JMJaskula
Region: Boone County, Indiana, United States
Verified by: rogerdowner
Verified date: Jul 01, 2022
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/r06_8791.jpg?itok=ptvEn8EB)
Observation date: Jun 01, 2022
Submitted by: lassa8
Region: Montgomery County, Maryland, United States
Verified by: rogerdowner
Verified date: Jun 07, 2022
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/p1260143_0.jpg?itok=VbnipoKZ)
Observation date: Apr 01, 2022
Submitted by: Robert Gorman
Region: San Diego County, California, United States
Verified by: mcduck
Verified date: May 30, 2022
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/20220329_140500.jpg?itok=xhJk2iAF)
Observation date: Mar 29, 2022
Submitted by: Kelli Beaty
Region: Houston County, Alabama, United States
Verified by: stomlins701
Verified date: Apr 03, 2022
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/bamona_moth_prionoxystus_robinae_steeplechase_img_5994_58.jpg?itok=nL2AjNEU)
Observation date: Jul 08, 2021
Submitted by: Allen B
Region: Fentress County, Tennessee, United States
Verified by: Allen B
Verified date: Jan 05, 2022
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/26c5c3d4-e0eb-4310-a06e-9f687d57df08.jpeg?itok=vLC8YcKf)
Observation date: Aug 27, 2019
Submitted by: Rexdog
Region: Franklin County, Ohio, United States
Verified by: BarbSendelbach
Verified date: Jan 05, 2022
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