Papaipema marginidens
Guenée, 1852
brick-red borer moth, Wild Yam and Rattlesnake-master Borer Moths
Papaipema marginidens, known as the brick-red borer , is a noctuid moth native to eastern North America. It inhabits open oak woodlands and rocky barrens with herbaceous undergrowth, particularly near streams. The is listed as endangered in Connecticut, reflecting vulnerability in parts of its range.

Pronunciation
How to pronounce Papaipema marginidens: //ˌpæpaɪˈpiːmə ˌmɑːrdʒɪˈnaɪdɛnz//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from other Papaipema by its eastern North American distribution and association with open oak woodland . The specific epithet 'marginidens' may refer to marginal tooth characteristics, though this requires verification. Separation from congeneric species likely requires examination of genitalia or larval associations.
Images
Appearance
Wingspan approximately 42 mm. The 'brick-red borer ' suggests reddish coloration, though specific pattern details are not documented in available sources.
Habitat
Open oak woodlands and barrens in rocky areas with herbaceous undergrowth, especially along streams. Requires a mixture of woodland and herbaceous ground layer vegetation.
Distribution
Eastern North America, from Pennsylvania and New York south to Georgia and North Carolina. to this region with no documented occurrences outside continental North America.
Diet
Larvae feed on herbaceous plants including Cicuta maculata (spotted water hemlock). feeding habits are not documented.
Host Associations
- Cicuta maculata - larval spotted water hemlock
Ecological Role
As a borer , larvae likely contribute to nutrient cycling through herbivory on native wetland and woodland herbs. Potential role in plant dynamics in specialized .
Human Relevance
Listed as endangered in Connecticut, indicating conservation concern due to loss or degradation. No documented economic or agricultural significance.
Similar Taxa
- Other Papaipema speciesCongeneric borer share similar strategies and preferences; identification to level requires detailed morphological examination
More Details
Conservation status
Endangered in Connecticut (US state listing), though not federally listed. This status reflects localized declines likely tied to fragmentation and loss of oak woodland-barren .
Taxonomic note
The iNaturalist 'Wild Yam and Rattlesnake-master Borer ' appears to apply to a broader group within Papaipema rather than this specifically; 'brick-red borer moth' is the established common name for P. marginidens.