Udea berberalis

Distinguished from similar Udea species by the combination of: single black forewing line with prominent tooth in cell and inward bend in submedian fold; small round orbicular spot filled with ground color; medium-sized lunate pale-centered reniform; and the specific arrangement of four to five minute dark costal spots between reniform and apex. The second dentate line with large inward loop below cell to vein 2 base is also diagnostic. Compare with Udea rubigalis, which has different forewing pattern elements and more extensive reddish or ferruginous markings.

Wingspan 18–22 mm. Forewings pale ocherous, sparsely dusted with fuscous, with fairly distinct maculation. Single black line with prominent tooth in cell and slight inward bend in submedian fold. Orbicular spot small, round, filled with pale ground color. Reniform spot medium-sized, lunate, pale-centered. Four to five minute dark costal spots between reniform and apex. Second single dentate line with large inward loop below cell to base of vein 2. Terminal dotted line present. Hindwings pale and smoky with traces of discal dot, bent postmedian line, and distinct terminal dotted line.

Known only from California, United States. No additional locality records documented beyond original description.

• Udea rubigalisCongeneric species with overlapping geographic range in California; differs in forewing pattern with more prominent reddish or ferruginous coloration and different line configuration
• Other Udea speciesGenus contains numerous similar small crambid moths requiring genitalia examination or detailed wing pattern analysis for definitive identification

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