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Digital Guide to Moth Identification

Crambidae
80a1478 – 5445   Thaumatopsis repandus (Grote, 1880)

© David Trochlell
Description/
Field Marks:
Male have have strongly pectinate antennae; females with shortly pectinate antennae (Landry 2025). There is much confusion which originated in Grote's original description for the male when the holotype was in fact a female.
Similar Species:
  • 80a1479 Thaumatopsis crenulatella: Males have crenulate antennae, heavily ciliated and without pectination; females have serrate antennae (Landry 2025).
  • 80a1478.1n Thaumatopsis mayelisae: Best separated by genitalia.
  • Pinned specimens of related species. (Hint: select View by Region on the related species page.)
Synonymy:
  • repandus (Grote, 1880) (Crambus) - MONA 1983: 5445; Holotype: Colorado.
  • References (Caution: DNA barcoding at BOLD provides evidence of relatedness, not proof of identification; some BOLD specimens shown may not be sequenced.)
    • Barcode of Life (BOLD)
    • Barcode of Life (BOLD) - BIN: BOLD:AAE7727 (treated as repandus in Landry (2025))
    • Barcode of Life (BOLD) - BIN: BOLD:AAZ7137 (possibly a cryptic species from AZ)
    • Grote, A.R., 1880. Preliminary list of North American species of Crambus. The Canadian Entomologist, 12: 79.
    • Kearfott, W.D., 1908. Descriptions of new species of North American crambid moths. Proceedings of the United States National Museum, 35 (1649): 390.
    • Landry, B., 2025. A review of the Thaumatopsis species of the Bolterellus group with descriptions of two new species (Crambidae, Crambinae). Journal of the Lepidopterists' Society, 79(2): 93; Figs 4, 8, 10, 20, 25.
    • Powell, J. A. & P. A. Opler, 2009. Moths of Western North America, Pl. 24.10m; p. 183. Book Review and ordering
    • Species Page at BugGuide.Net
    • Species Page at iNaturalist
    Thaumatopsis repandus
    © David Trochlell
    Thaumatopsis repandus
    CalPhotos – © Jerry Powell
    Thaumatopsis repandus
    - LG – © Jim Vargo

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