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CAPS Non-target - Adult

Acleris holmiana (Linnaeus) (Tortricidae: Tortricinae: Tortricini)

Fig. 1: Male

Fig. 1: Male

Fig. 2: Female

Fig. 2: Female

Fig. 3: Male genitalia

Fig. 3: Male genitalia

Fig. 4: Female genitalia

Fig. 4: Female genitalia

Adult Recognition

FWL: 5.5-8.0 mm

Adults are yellowish brown to orange or red with a conspicuous, white, semitriangular costal patch. Males lack a forewing costal fold. Male genitalia are characterized by a reduced uncus and elongate valva with an apical membranous lobe. Female genitalia are characterized by a small corpus bursae with a single scobinate signum.

Some (aberrant) individuals of Archips argyrospila can appear similar, although the costal patch is usually trapezoidal rather than triangular in A. argyrospila and males have a forewing costal fold. A genitalic dissection can easily separate A. holmiana from A. argyrospila.

Acleris holmiana was collected in large numbers as a non-target during Epiphyas postvittana pheromone trap surveys conducted in Washington.

Larval Morphology

Last instar larvae are yellowish to pale green. The head is light brown to reddish brown with black posterior shading. The prothoracic shield is black or dark brown with black posterolateral margins. An anal comb is present.


In North America, Acleris holmiana completes two, and possibly three, generations per year. Adults are present in May and again in June and July.

Larvae create a shelter by webbing together two leaves at their margins. Pupation occurs in the larval shelter. Overwintering occurs in the egg stage.

Host plants

This species is a minor pest of fruit trees (Rosaceae) in Europe. In addition to Rosaceae, it has been recorded feeding on buffalobur nightshade (Solanaceae) in Washington.

Family Genus/species Common name
Rosaceae Crataegus L. hawthorn
Rosaceae Cydonia Mill. cydonia
Rosaceae Malus domestica Borkh. apple
Rosaceae Malus Mill. apple
Rosaceae Malus sylvestris (L.) Mill. European crab apple
Rosaceae Prunus L. [various]
Rosaceae Pyrus L. pear
Rosaceae Rosa L. rose
Rosaceae Rubus L. blackberry
Rosaceae Sorbus aucuparia L. European mountain ash
Solanaceae Solanum rostratum Dunal buffalobur nightshade


A native of Europe and Asia Minor, Acleris holmiana was discovered in North America (British Columbia) in 1977. It was first detected in the U.S. (Washington) in 1994. It has apparently not spread outside of the Pacific Northwest.


Bradley, J. D., W. G. Tremewan and A. Smith. 1973. British Tortricoid Moths - Cochylidae and Tortricidae: Tortricinae. The Ray Society, London, England.

Mutuura, A. and E. Munroe. 1978. An old world leaf roller potentially injurious to Rosaceae, newly discovered in British Columbia, Croesia holmiana (Lepidoptera: Tortricidae). The Canadian Entomologist. 110: 641-646.

Obraztsov, N. S. 1963. Some North American moths of the genus Acleris. Proceedings of the United States National Museum. 114: 213-270.

Razowski, J. 2002. Tortricidae of Europe, Vol. 1, Tortricinae and Chlidanotinae. Frantisek Slamka, Slovakia. 247 pp.

Tortricids of Agricultural Importance by Todd M. Gilligan and Marc E. Epstein
Interactive Keys developed in Lucid 3.5. Last updated August 2014.