Abstract
In this paper, the mature larva and pupa of Bagous claudicans are described and illustrated for the first time. Measurements of younger larval instars are also given. The biology of the species is discussed in association with larval morphology and feeding habits. Overall larval and pupal morphological characters of the genus Bagous are presented. Confirmation of the larva identification as Bagous claudicans species was conducted by cytochrome oxidase I (COI) sequencing. DNA barcoding was useful for specimen identification of larval stages. The systematic position of the species within the Bagous collignensis-group, based on morphological and molecular results, is also discussed.
Highlights
The globally distributed weevil genus Bagous Germar, includes about 300 valid species, of which approximately 130 occur in the Palaearctic region, 82 in the Western Palaearctic, and 31 in Central Europe [1,2,3,4,5,6,7]
Measurements of larval instars were made for body length (BL), body width (BW), and width of the head capsule (HW)
Phylogenetic inferences were obtained for cytochrome oxidase I (COI) gene using Bayesian inference (BI) and Maximum likelihood (ML)
Summary
The globally distributed (except for Central and South America) weevil genus Bagous Germar, includes about 300 valid species, of which approximately 130 occur in the Palaearctic region, 82 in the Western Palaearctic, and 31 in Central Europe [1,2,3,4,5,6,7]. This makes it one of the most numerous among the weevil genera and the largest group of hydrophilous beetles, which comprise less than 1% of all known coleopteran species [8]. Based on records collected to date, most are regarded as nocturnal, inhabiting aquatic biotopes, e.g., ponds, old riverbeds, swamps, floodplain meadows and forests, where many of them develop on submerged vegetation
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