Native
Choristoneura fractivittana (Clemens) (Tortricidae: Tortricinae: Archipini)
Common names: broken-banded leafroller moth, dark-banded fireworm
Synonyms: fumosa (Tortrix)
FWLFWL:
forewing length; the distance from the base of the forewing to the apex, including fringe
: 7.5-9.0 mm (males); 9.5-12.5 mm (females)
Head and thorax golden brown; forewing with ground color golden brown; fasciaefascia:
a dark transverse band on the forewing
brown, basal fasciabasal fascia:
the fascia (transverse band) at the base of the forewing 
fainter than median fasciafascia:
a dark transverse band on the forewing, occasionally obsolete, median fasciafascia:
a dark transverse band on the forewing often conspicuously broken along anterioranterior:
before, to the front, toward the head 
margin of cell (usually more distinct in males); male with costal fold present; hindwing brown.
Male genitalia are distinguished by short, broadly quadrate valvaevalva:
an appendage flanking the intromittent organ that is used to clasp the female during copulation
with a well-developed sacculussacculus:
the ventral margin of the male valva 
without an abruptly angular subapical projection on the ventralventral:
lower, to the bottom, on the under side
margin; and a finger-like uncusuncus:
a sclerotized process which is fused to the posterodorsal margin of tergum IX
(Dang 1992Dang 1992:
Dang, P. T. 1992. Morphological study of male genitalia with phylogenetic inference of Choristoneura Lederer (Lepidoptera: Tortricidae). Canadian Entomologist. 124: 7-48.). Female genitalia are characterized by a long, thin ductus bursae and a large, hook-like signumsignum:
a sclerotized projection or patch on the interior of the corpus bursae
.
Little is known about the larval morphology of C. fractivittana, but it is undoubtedly similar to other species of Choristoneura, especially C. conflictana, to which it is closely related.
Similarities in genitalia and molecular analyses suggest that C. fractivittana is most closely related to C. conflictana, despite the two being quite distinct in external appearance.
Externally, C. fractivittana is very similar in forewing pattern to both C. rosaceana and C. parallela. Both males of C. rosaceana and C. fractivittana possess a forewing costal foldforewing costal fold:
a flap or fold at the base of the forewing that contains specialized sex scales
, but the median fasciafascia:
a dark transverse band on the forewing of C. fractivittana is often incomplete or fractured (hence its species name) compared to C. rosaceana. In addition, the margins of the fasciaefascia:
a dark transverse band on the forewing in C. fractivittana are often more poorly-defined than in C. rosaceana.
Males of C. parallela lack a forewing costal foldforewing costal fold:
a flap or fold at the base of the forewing that contains specialized sex scales. In addition, the outer margin of the basal fasciabasal fascia:
the fascia (transverse band) at the base of the forewing is parallel to the inner margininner margin:
see dorsum 
of the median fasciafascia:
a dark transverse band on the forewing in C. parallela. In C. fractivittana, this is not the case (the basal fasciabasal fascia:
the fascia (transverse band) at the base of the forewing is often obsolete).
Little is known about the biology of C. fractivittana beyond the known host plants listed below. Its life cycle is likely similar to other broad leaf-feeding species of Choristoneura, such as C. rosaceana.
| Host plant | Host plant family | Reference(s) |
| Acer rubrum | Aceraceae | 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. |
| Acer saccharinum | Aceraceae | 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. |
| 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. |
| Fagus sp. | Fagaceae | Freeman 1958Freeman 1958: Freeman, T. N. 1958. The Archipinae of North America (Lepidoptera: Tortricidae). Canadian Entomologist, Supplement 7 (Vol. 90): 1-89. |
| 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 rubra | Fagaceae | 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 sp. | Fagaceae | Freeman 1958Freeman 1958: Freeman, T. N. 1958. The Archipinae of North America (Lepidoptera: Tortricidae). Canadian Entomologist, Supplement 7 (Vol. 90): 1-89.; 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. |
| Malus sp. | Rosaceae | MacKay 1962aMacKay 1962a: MacKay, M. R. 1962a. Larvae of the North American Tortricinae (Lepidoptera: Tortricidae). Canadian Entomologist, Supplement 28: 1-182. |
| Pyrus sp. | Rosaceae | Freeman 1958Freeman 1958: Freeman, T. N. 1958. The Archipinae of North America (Lepidoptera: Tortricidae). Canadian Entomologist, Supplement 7 (Vol. 90): 1-89. |
| Rubus sp. | Rosaceae | Freeman 1958Freeman 1958: Freeman, T. N. 1958. The Archipinae of North America (Lepidoptera: Tortricidae). Canadian Entomologist, Supplement 7 (Vol. 90): 1-89. |
| Ulmus americana | Ulmaceae | 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. |
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Choristoneura fractivittana is widespread across eastern North America, but does not appear to be as common as other species of Choristoneura, such as C. rosaceana.
