The larval structures and bionomics of Idgia iriomoteana (Coleoptera: Prionoceridae)

Stránky 427–434
DOI 10.37520/aemnp.2021.023
Klíčová slova Coleoptera, Cleroidea, Prionoceridae, melyrid lineage, life cycle, dormancy, foetometamorphosis, Japan, Oriental Region
Citace ASANO, Makoto. The larval structures and bionomics of Idgia iriomoteana (Coleoptera: Prionoceridae). Acta Entomologica Musei Nationalis Pragae. Praha: Národní muzeum, 2021, 61(2), 427–434. DOI: https://doi.org/10.37520/aemnp.2021.023. ISSN 0374-1036 (print), 1804-6487 (online). Dostupné také z: https://publikace.nm.cz/periodicke-publikace/acta-entomologica-musei-nationalis-pragae/61-2/the-larval-structures-and-bionomics-of-idgia-iriomoteana-coleoptera-prionoceridae
Acta Entomologica Musei Nationalis Pragae | 2021/61/2

The life cycle, bionomics and mature larval structures of the Japanese prionocerid species, Idgia iriomoteana Nakane, 1980 were investigated in captivity. The results showed that I. iriomoteana has the following characteristics: (1) the larval morph is less advanced in terms of miniaturization, and larvae pass seven larval molts before they pupate; (2) the life cycle is univoltine with summer, not winter, dormancy; (3) the first instar larvae are larger than the size of the egg, but foetomorphic larval instar (which is observed in the Melyridae: Malachiinae) is not shown. Based on comparison with melyrid species, the degree of miniaturization, dormancy behaviour, adaptation to the tropical and subtropical climates and the adaptive significance of a large first instar larva are all discussed. This study is the first to report the complete life cycle of a member of the family Prionoceridae.

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