Prionoxystus

Grote, 1882

carpenterworm moth

Prionoxystus is a of in the . The genus includes three described : P. robiniae, P. macmurtrei, and P. piger. are and exhibit complex mating behaviors involving , acoustic signals, and visual displays. are wood-borers, with at least P. robiniae associated with Robinia (black ).

Prionoxystus macmurtrei 05-18-15 (17847760626) by Smithsonian Environmental Research Center. Used under a CC BY 2.0 license.

Prionoxystus macmurtrei by James Solomon, USDA Forest Service, United States. Used under a CC BY 3.0 license.

Prionoxystus macmurtrei P1180135a by
xpda. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Prionoxystus: //ˌpraɪ.oʊˈnɒk.sɪtəs//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Members of Prionoxystus can be recognized as cossid by their bodies, relatively broad , and often subdued coloration typical of carpenter moths. -level identification requires examination of or detailed wing pattern analysis; P. robiniae is distinguished by its association with black and specific geographic range in eastern North America.

Images

Habitat

Associated with wooded areas containing trees; bore into living or dead hardwoods.

Distribution

North America; records include the United States (specifically Vermont and broader eastern regions based on P. robiniae occurrence).

Seasonality

and activity occur during scotophase (dark period); emergence have been documented but specific seasonal timing varies by and latitude.

Diet

bore into wood; P. robiniae has been observed in Robinia (black ). feeding habits are not documented in available sources.

Host Associations

Robinia - larval Association inferred from epithet 'robiniae' and ; specific confirmation from primary literature not provided in available sources

Life Cycle

with wood-boring larval stage. emerge from trees; specific developmental timing and details not documented in available sources.

Behavior

exhibit activity patterns. Females release from an gland between the 8th and 9th abdominal during scotophase, peaking 1-2 hours after darkness onset and continuing up to 6 hours. Calling females extrude the gland, elevate the , and fan their . Males locate females by flying upwind (), then circling and landing. Males possess hairpencils (scent brushes) on the that are everted during courtship and may disseminate aphrodisiac . Males produce ultrasonic chirping sounds by rubbing the against the hindwing. Copulation lasts 1-3 hours. Both sexes are polygamous.

Ecological Role

function as primary or in woody substrates; specific impacts not quantified in available sources.

Human Relevance

of P. robiniae bore into black and potentially other hardwoods, potentially affecting timber and ornamental trees; known as due to larval wood-boring habit.

Similar Taxa

CossusAnother of carpenter in ; distinguished by and associations
Zeuzera in ; typically have spotted patterns and different larval preferences

More Details

Acoustic communication

Male P. robiniae produce ultrasonic chirping via ( rubbing against ), a relatively uncommon communication mode in that may function in courtship.

Pheromone gland morphology

The female gland in P. robiniae is and located between the 8th and 9th abdominal , a specific anatomical feature enabling controlled release during calling .