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Abstract <p>The paper presents the first record of the black fig weevil, <i>Aclees taiwanensis</i> Kôno, 1933 (Coleoptera: Curculionidae: Molytinae), in Russia. In 2023, its larvae were detected in the wood of drying fig seedlings <i>Ficus carica</i> L. (Moraceae) and few imagoes were observed feeding on fig leaves in an orchard nursery in Sochi. The species was identified based on morphological features of imago and through DNA barcoding. Two generations were recorded in Sochi, with picks of adult emergence in mid-July and early October. The maximum intraspecific genetic variability, which was estimated based on the COI gene of mtDNA for 28 specimens of <i>A. taiwanensis</i> from the invaded range (Russia (Sochi), Italy, France, South Korea) and native range (Taiwan), was 0.77%. In DNA barcoding fragment, the specimen from Sochi was identical to those from Italy and France. The species was likely introduced to the Black Sea coast of Russia from Southern Europe with plants for planting. The paper provides diagnostic features of the species, along with the images of imago, larvae and damaged fig seedlings. It also reviews trophic associations and current distribution and discusses the potential threat to fig plantations in agroecosystems and ornamental plantings in the Russian Caucasus.</p>

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Invasion by the Alien Weevil Aclees taiwanensis Kôno, 1933 (Coleoptera: Curculionidae, Molytinae) on the Black Sea Coast of Russia: Biology and Molecular Genetics of a New Pest

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • E. N. Zhuravleva,
  • I. A. Zabaluev,
  • E. I. Shoshina,
  • N. N. Karpun,
  • N. I. Kirichenko

摘要

Abstract

The paper presents the first record of the black fig weevil, Aclees taiwanensis Kôno, 1933 (Coleoptera: Curculionidae: Molytinae), in Russia. In 2023, its larvae were detected in the wood of drying fig seedlings Ficus carica L. (Moraceae) and few imagoes were observed feeding on fig leaves in an orchard nursery in Sochi. The species was identified based on morphological features of imago and through DNA barcoding. Two generations were recorded in Sochi, with picks of adult emergence in mid-July and early October. The maximum intraspecific genetic variability, which was estimated based on the COI gene of mtDNA for 28 specimens of A. taiwanensis from the invaded range (Russia (Sochi), Italy, France, South Korea) and native range (Taiwan), was 0.77%. In DNA barcoding fragment, the specimen from Sochi was identical to those from Italy and France. The species was likely introduced to the Black Sea coast of Russia from Southern Europe with plants for planting. The paper provides diagnostic features of the species, along with the images of imago, larvae and damaged fig seedlings. It also reviews trophic associations and current distribution and discusses the potential threat to fig plantations in agroecosystems and ornamental plantings in the Russian Caucasus.