A new species of Aclees from Taiwan with notes on other species of the genus (Coleoptera: Curculionidae: Molytinae)

Meregalli, Massimo; Boriani, M.; Taddei, Andrea; Hsu, Chen-Fu; Tseng, Wei-Zhe; Mouttet, Raphaëlle

doi:10.11646/zootaxa.4868.1.1

Cited by 1,332 publications

(4 citation statements)

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“…Among invertebrates, 90% is represented by insect pests causing huge economic losses that have been estimated as more than 76.0 billion US $ per year [ 1 ]. The fig weevil Aclees taiwanensis (Coleoptera: Curculionidae ) [ 1 , 2 ] is an invasive pest harmful to the fig tree Ficus carica (Moraceae). The species, native to subtropical and tropical Asia, threatens southern European fig nurseries, orchards, and wild plants, and has also recently been reported in South Korea [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Biological Insights on the Invasive Fig Pest Aclees taiwanensis Kȏno, 1933 (Coleoptera: Curculionidae)

Tani

Conti

Bedini

2023

Insects

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The fig weevil Aclees taiwanensis Kȏno, 1933 (Coleoptera: Curculionidae) is an invasive fig tree pest recently introduced in southern Europe. Reported for the first time in France in 1997 as A. cribratus, and then in Italy in 2005 as A. sp. cf. foveatus, A. taiwanensis is currently threatening fig nurseries, orchards, and wild plants. To date, no control methods have proven to be effective against A. taiwanensis. Although some attempts have been made to describe the insect’s biology and behavior, such information is limited to that obtained from adult samples collected in the field. In particular, because of their xylophagous behavior, scarce information is available on the larval stages of the species. The aim of this study, therefore, was to fill these information gaps on the insect biology and behavior by setting up a laboratory protocol suitable for the rearing of A. taiwanensis. Using the developed rearing protocol, we assessed the main fitness parameters of the species including oviposition rate, egg hatchability, embryonic, larval and pupal duration and development, immature survival, pupation behavior, pupal weight, emergence, sex ratio and adult morphological parameters. The proposed rearing procedure allowed us to obtain new information on the main features of the insect’s biology that may be useful for setting up strategies for its control.

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Section: Introductionmentioning

confidence: 99%

Biological Insights on the Invasive Fig Pest Aclees taiwanensis Kȏno, 1933 (Coleoptera: Curculionidae)

Tani

Conti

Bedini

2023

Insects

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“…Furthermore, most of the species are morphologically very similar and this has generated confusion in the identification of samples preserved in museums and collections. Only in 2020, Meregalli and coauthors [6] correctly revised the taxonomic identification, referring to the species introduced in Italy and France as A. taiwanensis. Currently, the weevil is widespread in several regions of Italy (Abruzzo, Apulia, Emilia Romagna, Friuli-Venezia Giulia, Lazio, Liguria, Lombardy, Marche, Tuscany, Umbria, Veneto, and Sicily) [7][8][9][10]; since 2020, it has also been detected in France, in the area around the Sauvebonne Valley [11], and in South Korea [12].…”

Section: Introductionmentioning

confidence: 99%

Efficacy of Beauveria bassiana and Mechanical Traps for the Control of Aclees taiwanensis (Coleoptera: Curculionidae) in Fig Plants

Cutino,

Benvenuti,

Mazza

et al. 2023

Agriculture

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The black weevil Aclees taiwanensis Kôno, 1933 (Coleoptera: Curculionidae) is a xylophagous insect native to Southeast Asia and introduced to Italy in 2005. Here, the species completes its entire life cycle on Ficus carica L., causing economic damage and leading to the plants’ death. Nowadays, there are no insecticides registered for its control. In this study, a commercial product based on Beauveria bassiana, Naturalis®, was associated with Rincotrap® tissue. Semi-field trials were carried out on fig seedlings by comparing two different concentrations (3% and 10%) of this entomopathogenic fungus distributed in suspension on Rincotrap® bands. The results showed that the fungal product had a biocidal effect in both treatments. Afterward, trials were conducted in a fig orchard in order to verify the effectiveness of this association in the field. The addition of Naturalis® at a 3% concentration to Rincotrap® bands did not alter the number of adults captured. The total mortality was 43.7% and 23.8%, respectively, in the treated and control plots. Among the total number of dead adults, only the mortality rates of B. bassiana exceeded 70% in both plots. Further long-term studies in several environments are necessary to improve this technique and create an integrated control system for the black fig weevil.

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“…In the last years, a new pest is threatening the fig orchards in the Mediterranean area. The black weevil Aclees taiwanensis Kȏno, 1933 (Coleoptera: Curculionidae: Molytinae) ( Figure 1 ), native to Asia [ 6 ], is a pest of Ficus spp., and, in particular, it represents a major threat for the fig tree Ficus carica . In Europe, it was firstly recorded in 1997 as A. cribratus in France [ 7 ] and then in 2005 in Italy [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Biological Notes and Distribution in Southern Europe of Aclees taiwanensis Kȏno, 1933 (Coleoptera: Curculionidae): A New Pest of the Fig Tree

Farina

Mazza²,

Benvenuti³

et al. 2020

Insects

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Ficus carica L. is one of the earliest cultivated fruit trees, and figs are a typical fruit of the Mediterranean diet and traditional medicine as well. In recent years, a new pest, the black weevil Aclees taiwanensis Kȏno, 1933 (Coleoptera: Curculionidae) native to Asia, has been recorded in France and Italy. Aclees taiwanensis causes the rapid death of the fig tree by its larvae that dig alimentation galleries in the trunk and surface roots, compromising the phloem flux. In Italy, from 2005, the year of the first detection of A. taiwanensis, the fig production has nearly halved, decreasing from 20.09 t to 10.65 t. To date, no specific EU regulation has been applied to prevent the A. taiwanensis spread, and we can reasonably expect a rapid diffusion of this pest all over the Mediterranean area. To avoid the loss of the Mediterranean fig orchards, effective strategies to detect and control the black weevil are required. Such strategies need a detailed knowledge of A. taiwanensis distribution, biology, and physiology. This paper updates the known distribution of this species in Southern Europe, using a citizen science approach, and describes, under laboratory and field conditions, its main biological traits.

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A new species of Aclees from Taiwan with notes on other species of the genus (Coleoptera: Curculionidae: Molytinae)

Cited by 1,332 publications

References 0 publications

Biological Insights on the Invasive Fig Pest Aclees taiwanensis Kȏno, 1933 (Coleoptera: Curculionidae)

Biological Insights on the Invasive Fig Pest Aclees taiwanensis Kȏno, 1933 (Coleoptera: Curculionidae)

Efficacy of Beauveria bassiana and Mechanical Traps for the Control of Aclees taiwanensis (Coleoptera: Curculionidae) in Fig Plants

Biological Notes and Distribution in Southern Europe of Aclees taiwanensis Kȏno, 1933 (Coleoptera: Curculionidae): A New Pest of the Fig Tree

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