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Digital Guide to Moth Identification

91a1409 – 6963   Tetracis crocallata Guenée, [1858]
             Yellow Slant-line

© Aaron Cavosie
Distribution: Nova Scotia to southern Alberta, south to northern Florida and eastern Texas.
and Size:
Two generations from New York southward. FWL ~ 17-25 mm.
Larva and
Host Plants:
Host plants include Alnus, Castanea and Salix.
Genitalia: See Ferris & Schmidt (2010).
Similar Species:
  • Pinned specimens of related species. (Hint: select View by Region on the related species page.)
Synonymy: Tetracis crocallata Guenée, [1858]
Tetracis aspilatata Guenée, [1858]
Taxonomic Notes: Tetracis crocallata Guenée, [1858], n. comb. in Ferris & Schmidt (2010), was formerly in the genus Synaxis.
  • Barcode of Life (BOLD) - Caution: DNA barcode provides evidence of relatedness, not proof of identification, and some BOLD specimens shown may not be sequenced.
  • Ferris, C.D. & B.C. Schmidt, 2010. Revision of the North American Genera Tetracis Guenée and Synonymization of Synaxis Hulst with Descriptions of Three New Species (Lepidoptera: Geometridae: Ennominae). Zootaxa, 2347: 1-36.
  • Hall et al., 2021. The Moths of North Carolina - website (identification, habitats and life history)
  • Species Page at Block Island Moths
  • Species Page at BugGuide.Net
  • Species Page at E. H. Strickland Museum
  • Species Page at Mass Moths
Tetracis crocallata
© Jim Kennedy
Tetracis crocallata
© Bob Patterson
Tetracis crocallata
© Tom Murray - ssp. aspilatata
Tetracis crocallata
© D. L. Scott - ssp. aspilatata
Tetracis crocallata
© Matthew Priebe
Tetracis crocallata
© Jason Dombroskie
Tetracis crocallata
© Nolie Schneider
Tetracis crocallata
© David Reed
Tetracis crocallata
© Ken Childs
Tetracis crocallata
LG – © Jim Troubridge
Tetracis crocallata
38mm – © Jim Vargo
Tetracis crocallata
© Canadian National Collection LG

Tetracis crocallata
© Janice Stiefel
5th instar - 28 days

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