Ancylis

Hübner, [1825], 1816

Species Guides

32

Ancylis is a of tortricid moths in the Olethreutinae, tribe Enarmoniini. are commonly known as leafrollers or leaf folders, with larvae that construct silk shelters by folding or rolling plant leaves. The genus has a Holarctic distribution with some species also recorded from the Oriental region and South America. Several species are economically significant agricultural pests, including the strawberry leafroller (A. comptana) and the jujube leafroller (A. sativa). Taxonomic revision using has clarified species boundaries, revealing that presumed Holarctic distributions were often due to misidentification.

Ancylis sheppardana by (c) Dan MacNeal, some rights reserved (CC BY), uploaded by Dan MacNeal. Used under a CC-BY license.Ancylis apicana by (c) Roger Rittmaster, some rights reserved (CC BY), uploaded by Roger Rittmaster. Used under a CC-BY license.Ancylis columbiana by (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda. Used under a CC-BY license.

Pronunciation

How to pronounce Ancylis: //ˈæn.sɪ.lɪs//

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Habitat

Forested and agricultural environments; specific varies by plant association. Larvae of A. discigerana occur in yellow birch forests with in leaf litter. Agricultural of A. comptana occur in strawberry fields and orchards with perimeter plantings of rose and strawberry.

Distribution

Holarctic distribution confirmed for A. unguicella and A. uncella; other have more restricted ranges. Recorded from Europe (Austria, Germany, Scandinavia, Denmark, Norway, Sweden), North America (USA: Vermont, Oregon, Florida, Kansas, Washington; Canada), and Asia (China: Heilongjiang and other provinces; Pakistan). A. ecuadorica reported from Ecuador and Venezuela.

Seasonality

A. discigerana: with in early June; mid-April to mid-May. A. sativa: multiple per year in Pakistan jujube orchards with activity coinciding with plant .

Host Associations

  • yellow birch (Betula alleghaniensis) - primary A. discigerana
  • strawberry (Fragaria spp.) - primary A. comptana
  • rose (Rosa spp.) - or enhancing plant for A. comptana; perimeter plantings enhance activity
  • jujube (Ziziphus mauritiana) - primary A. sativa

Life Cycle

Larval development includes five instars in A. sativa. A. discigerana: first two instars skeletonize lower leaf surface beneath silk webbing between lateral ; third instar moves to upper leaf surface and folds leaf longitudinally, feeding on upper within fold until leaf fall. as final instar larva in leaf litter (A. discigerana). timing varies: mid-April to mid-May for A. discigerana.

Behavior

Leaf-rolling and leaf-folding using silk webbing. First instar larvae construct protective silk shelters on leaf undersides; later instars create longitudinal leaf folds. deposited individually on upper leaf surfaces, typically on major or slight epidermal depressions.

Ecological Role

Herbivores on woody and herbaceous plants; serve as for including Trichogramma minutum ( parasitoid) and Apanteles polychrosidis (larval parasitoid) in A. discigerana . target in systems.

Human Relevance

Several are agricultural pests causing economic damage to fruit crops. A. comptana is a significant pest of strawberry in North America. A. sativa causes major yield losses in jujube orchards in Pakistan. Management strategies include through conservation of via perimeter plantings.

Misconceptions

Previous literature presumed several Ancylis to be Holarctic based on morphological similarity, particularly in the A. unguicella and A. geminana groups. and morphological revision demonstrated that only A. unguicella and A. uncella are truly Holarctic; A. geminana group species are not Holarctic. This resolved inconsistencies in European and North American taxonomic treatments.

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