Taxonomic review of the leek moth genus Acrolepiopsis (Lepidoptera: Acrolepiidae) in North America | The Canadian Entomologist | Cambridge Core (original) (raw)

Abstract

The North American species of Acrolepiopsis are reviewed and include six described species: A. assectella (Zeller), A. californica Gaedike, A. heppneri Gaedike, A. incertella (Chambers), A. leucoscia (Meyrick), and A. reticulosa (Braun). Acrolepiopsis liliivora Gaedike is considered a junior synonym of A. californica (new synonymy). Acrolepiopsis assectella, commonly known as the leek moth, is a recently invasive alien species in North America and a pest of the plant genus Allium, including leek, onion, garlic, and related cultivated plants. A key to species based on adults is provided, diagnostic characters including male and female genitalia are illustrated, and geographical distribution, host plants, and larval feeding pattern and damage (where known) are given. Diagnostics and illustrations are presented also for A. sapporensis (Matsumura); known as the Asiatic onion leafminer, it is very similar to A. assectella and is an invasive alien species present in Hawaii, though not in North America. Adult diagnostic characters of the genus Acrolepiopsis, the family Acrolepiidae, and the superfamily Yponomeutoidea are also provided and illustrated. DNA barcoding data (short sequences of the mitochondrial cytochrome c oxidase I gene) obtained for five of the six species revealed interspecific differences averaging 8.1%, whereas intraspecific variation was ≤ 0.16%, and provided unequivocal species separation matching morphology-based identifications.

Résumé

L'auteur passe en revue les espèces d'Acrolepiopsis d'Amérique du Nord. Il reconnaît six espèces: A. assectella (Zeller), A. californica Gaedike, A. heppneri Gaedike, A. incertella (Chambers), A. leucoscia (Meyrick) et A. reticulosa (Braun). Il considère A. liliivora Gaedike comme un synonyme récent de A. californica (synonymie nouvelle). Acrolepiopsis assectella, appelée communément teigne du poireau, est une introduction récente et invasive sur le continent nord-américain, et un ravageur des ails (Allium spp.), y compris les poireaux, les oignons, l'ail et autres espèces cultivées. Il fournit un tableau d'identification des adultes, présente et illustre les caractères diagnostiques des génitalia mâles et femelles, donne la répartition géographique, les plantes nourricières et le mode d'alimentation des larves (lorsque connu). Il présente aussi les caractères diagnostiques de la mineuse asiatique de l'oignon, A. sapporensis (Matsumura), un espèce invasive à Hawaii qui n'est pas connue du continent nord-américain mais qui ressemble beaucoup à A. assectella. Il donne et illustre des caractères diagnostiques permettant de reconnaître le genre Acrolepiopsis, la famille des Acrolepiidae et la superfamille des Yponomeutoidea. Les codes-barres génétiques (de courtes séquences du gène mitochondrial de la sous-unité I de la cytochrome oxydase c), obtenus pour cinq des six espèces, présentent des différences interspécifiques de 8.1 % en moyenne, alors que la variation intraspécifique est ≤ 0.16 %, et permettent la séparation sans équivoque des espèces qui correspond à l'identification basée sur les traits morphologiques.

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