The mature larva and pupa of and the mature larva of are described for the first time. The larvae of and are re-described. Five larval instars were determined in , thereby correcting doubtful data in the literature. The relationship between larval growth, number of larval instars, head width of the mature larva, and the adult weevil is explained using the example of . The nearly constant ratio of subsequent larval instars in head width ratio, termed "growth factor" and derived from Dyar's ratio, is used for the determination of larval instars. Larval collecting and breeding data are discussed in relation to their significance for the clarification of life-cycles.
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| http://dx.doi.org/10.3897/zookeys.813.30336 | DOI Listing |
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