Cenopis diluticostana Walsingham (Tortricidae: Tortricinae: Sparganothini)
Common name: spring dead-leaf roller
Synonyms: quercana (Cenopis)
FWL: 6.0–7.0 mm (males); 6.5–7.5 mm (females)
Head gray-brown; labial palpi long, concolorous; thorax reddish brown, dark-brown anteriorly; male forewing with ground color variable, usually reddish brown; costa paler, typically yellow or yellow orange, but occasionally concolorous with ground color; costa with two broad, well-defined purplish-brown fasciae to the inner margin; terminal fascia along fringe similarly colored; forewing costal fold short, well-developed. Female forewing similar to male but evenly colored, without yellow scaling along costa; fasciae without iridescence; hindwing of both sexes brown.
Male genitalia are characterized by thin, curved uncus; large, slender socii; and elliptical valvae. Female genitalia are characterized by sterigma with lateral lobes on each side of the ostium bursae; ductus bursae coiled once; and signum present as a curved band without an expanded sclerite.
There are no published descriptions of the larvae of Cenopis diluticostana, but they almost certainly resemble other species of Cenopis such as C. pettitana.
Cenopis diluticostana is unlikely to be confused with any other species. The combination of its small size and the broad, well-developed purplish-brown fasciae running from costa to inner margin should serve to easily separate this species from all other North American tortricids.
Cenopis diluticostana is broadly distributed in eastern North America, from Maine to southern Ontario and Minnesota south to Florida and eastern Texas.
Little is known about the precise life history and phenology of Cenopis diluticostana beyond the known host plants listed below. Most adult records are from June and July, although adults may appear earlier in the spring further south. Pupation occurs in a rolled leaf.
View full screen host table here
Authors: KA Austin, TM Gilligan, ME Epstein
Content last updated May 2025
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