Morphology and biology of Malachius prolongatus (Coleoptera: Melyridae: Malachiinae)
Asano Makoto
Acta Entomologica Musei Nationalis Pragae 57(2): 603-615, 2017
Published online: 31st December 2017
Views: 1693
Abstract: Oviposition behaviour, early instars and adult sexual dimorphism of Malachius
(Malachius) prolongatus Motschulsky, 1866 (Coleoptera: Melyridae: Malachiinae)
are described. Larval morphogenesis and the timing of developmental events are
compiled and compared with larval development of three malachiine species
studied before. Larvae of Malachius prolongatus at the time of egg hatch exhibit
the most advanced morphogenesis currently known in malachiine beetles,
especially in the development of labrum, antennae, mandibular condyles,
maxillary and labial palps and prolegs. However, similar to previously studied
genera, they also bear thoracic egg bursters.
Key words: Coleoptera, Cleroidea, Malachiinae, Melyridae, morphology, ontogeny, hatching, first instar larva, foetomorphic larva, embryonic molt
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