Native
Cenopis diluticostana Walsingham (Tortricidae: Tortricinae: Sparganothini)
Common name: spring dead-leaf roller
Synonyms: quercana (Cenopis)
FWLFWL:
forewing length; the distance from the base of the forewing to the apex, including fringe
: 6.0-7.0 mm (males); 6.5-7.5 mm (females)
Head gray-brown; labial palpilabial palpi:
a pair of sensory appendages that project from the lower part of the head; usually covered in scales and three-segmented
long, concolorous; thorax reddish-brown, dark brown anteriorly; male forewing with ground color variable, usually reddish-brown; costacosta:
the anterior margin of each wing 
paler, typically yellow or yellow-orange, but occasionally concolorous with ground color; costacosta:
the anterior margin of each wing with two broad, well-defined purplish-brown fasciaefascia:
a dark transverse band on the forewing
to the inner margininner margin:
see dorsum 
; terminal fasciafascia:
a dark transverse band on the forewing along fringe similarly colored; forewing costal foldforewing costal fold:
a flap or fold at the base of the forewing that contains specialized sex scales
short, well-developed. Female forewing similar to male but evenly colored, without yellow scaling along costacosta:
the anterior margin of each wing ; fasciaefascia:
a dark transverse band on the forewing without iridescence; hindwing of both sexes brown.
Male genitalia are characterized by thin, curved uncusuncus:
a sclerotized process which is fused to the posterodorsal margin of tergum IX
; large, slender sociisocii:
a pair of lightly sclerotized setose lobes
; and elliptical valvaevalva:
an appendage flanking the intromittent organ that is used to clasp the female during copulation
. Female genitalia are characterized by sterigmasterigma:
the sclerotized region surrounding the female ostium bursae 
with laterallateral:
to the side
lobes on each side of the ostiumostium:
see ostium bursae 
bursae; ductus bursaeductus bursae:
a membranous tube connecting the ostium bursae to the corpus bursae
coiled once; and signumsignum:
a sclerotized projection or patch on the interior of the corpus bursae
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 fasciaefascia:
a dark transverse band on the forewing running from costacosta:
the anterior margin of each wing to inner margininner margin:
see dorsum should serve to easily separate this species from all other North American tortricids.
Little is known about the precise life history and phenology of C. 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.
| Host plant | Host plant family | Reference(s) |
| Vincetoxicum rossicum | Apocynaceae | USNM collectionUSNM collection: USNM collection. Based on identified reared specimens in the collection of the National Museum of Natural History, Washington, D.C. |
| Betula papyrifera | Betulaceae | Prentice 1966Prentice 1966: Prentice, R. M. 1966. Vol. 4. Microlepidoptera. In : Forest Lepidoptera of Canada recorded by the Forest Insect Survey. Dept. For. Canada Publ. 1142: 543-840. |
| Viburnum lentago | Caprifoliaceae | LACM IndexLACM Index: LACM Index. Records from the card file at the Los Angeles County Museum of Natural History, Los Angeles, California; transcribed by Gaeden Robinson (BMNH). |
| Quercus coccinea | Fagaceae | Wagner et al. 1995Wagner et al. 1995: Wagner, D. L., Peacock, J. W., Carter, J. L., Talley, S. E. 1995. Spring caterpillar fauna of oak and blueberry in a Virginia deciduous forest. Annals of the Entomological Society of America. 88: 416-426. |
| Quercus sp. | Fagaceae | Fernald 1882aFernald 1882a: Fernald, C. H. 1882a. A synonymical catalogue of the described Tortricidae of North America, north of Mexico. Transactions of the American Entomological Society. 10: 1-64., b; Forbes 1923Forbes 1923: Forbes, W. M. T. 1923. The Lepidoptera of New York and neighboring states. Primitive forms, Microlepidoptera, Pyraloids, Bombyces. Cornell Univ. Argic. Exp. Sta., Mem. 68. 729 pp.; Meyrick MS 1938Meyrick MS 1938: Meyrick MS 1938. Unpublished manuscript by E. Meyrick at BMNH, data captured by Gaeden Robinson.; Wagner et al. 1995Wagner et al. 1995: Wagner, D. L., Peacock, J. W., Carter, J. L., Talley, S. E. 1995. Spring caterpillar fauna of oak and blueberry in a Virginia deciduous forest. Annals of the Entomological Society of America. 88: 416-426. |
| Fraxinus americana | Oleaceae | Prentice 1966Prentice 1966: Prentice, R. M. 1966. Vol. 4. Microlepidoptera. In : Forest Lepidoptera of Canada recorded by the Forest Insect Survey. Dept. For. Canada Publ. 1142: 543-840. |
| Malus domestica | Rosaceae | USNM collectionUSNM collection: USNM collection. Based on identified reared specimens in the collection of the National Museum of Natural History, Washington, D.C. |
| Prunus virginiana | Rosaceae | LACM IndexLACM Index: LACM Index. Records from the card file at the Los Angeles County Museum of Natural History, Los Angeles, California; transcribed by Gaeden Robinson (BMNH). |
| Prunus sp. | Rosaceae | Fernald 1882aFernald 1882a: Fernald, C. H. 1882a. A synonymical catalogue of the described Tortricidae of North America, north of Mexico. Transactions of the American Entomological Society. 10: 1-64.; Meyrick MS 1938Meyrick MS 1938: Meyrick MS 1938. Unpublished manuscript by E. Meyrick at BMNH, data captured by Gaeden Robinson. |
View full screen host table here
Cenopis diluticostana is broadly distributed in eastern North America, from Maine to southern Ontario and Minnesota south to Florida and eastern Texas.
