Elongated mouthparts of nectar-feeding Meloidae (Coleoptera)

  title={Elongated mouthparts of nectar-feeding Meloidae (Coleoptera)},
  author={Andreas Wilhelmi and Harald W Krenn},
Coleoptera of at least three taxa in the Nemognathini (Meloidae) possess mouthparts that are specialized for nectar feeding from flowers with a deep corolla. Parts of the maxillae are modified to form an elongate proboscis-like organ. In Leptopalpus species, the four-segmented maxillary palps form the proboscis, whereas in Nemognatha and Gnathium species, the elongated galeae enable nectar feeding. With the use of scanning electron microscopy and micro computerized tomography, the present study… 

The earliest beetle with mouthparts specialized for feeding on nectar is a parasitoid of mid-Cretaceous Hymenoptera

Evidence of the earliest occurrence of specialized nectar feeding mouthparts in Coleoptera is presented, and a new wedge-shaped beetle Melanosiagon serraticornis is described, closely related to extant Macrosiagonini.

The evolution of the mouthpart structures in the Eucraniini (Coleoptera, Scarabaeidae)

Well-differentiated and distinguished MOS were detected in the three Neotropical tribes Eucraniini, Phanaeini, and Dichotomiini, evidencing also how the variation patterns of this complex system mirror the phylogenetic relationships among these tribes, and also within the Euc Craniini genera.

Functional morphology of the mouthparts of lady beetle Hippodamia variegata (Coleoptera: Coccinellidae), with reference to their feeding mechanism

It is found that the basic components of the mouthpart of H. variegata are the same as those in other lady beetles, which are labrum, mandible, maxillae, labium, and hypopharynx and the morphologies are also quite similar to other species.

Structure and Evolution of Mouthparts in Coleoptera

The ancestral adult feeding apparatus in Myxophaga and different groups of Polyphaga is characterized by large mandibular molae and epi- and hypopharyngeal bulges with microtrichia, a configuration suitable for processing soft and decaying plant tissues and also small particles.

Functional morphology of the mouthparts of lady beetle Coccinella transversoguttata (Coccinellidae, Coleoptera), with reference to their feeding mechanism

The functional morphology of mouthparts was studied, with special attention to the fine morphology of each part of mouthpart and various kinds of sensilla, to lay a solid foundation for understanding the feeding mechanism of lady beetles.

Microstructure of mandibulate mouthparts in the greater rice weevil, Sitophilus zeamais (Coleoptera: Curculionidae)

The greater rice weevil, Sitophilus zeamais, is a serious pest of stored grain and is equipped with effective mandibulate mouthparts for penetrating and boring holes.

Roach nectarivory, gymnosperm and earliest flower pollination evidence from Cretaceous ambers

The evidence for early cockroach pollination is now substantial and unique is the forewing surface of L. vegrandis with photonic crystal structures within the scales.



Mouthparts of flower-visiting insects

Flower visiting Neuroptera: Mouthparts and feeding behaviour of Nemoptera sinuata (Nemopteridae)

Video analyses of the mouthpart movements distinguished different patterns of maxillary motions which occur in nectar feeding or pollen collecting, which probably evolved from preda- tory and biting/chewing mouthparts within the Neuroptera.

A Probable Pollination Mode Before Angiosperms: Eurasian, Long-Proboscid Scorpionflies

The presence of scorpionfly taxa suggests that siphonate proboscides fed on gymnosperm pollination drops and likely engaged in pollination mutualisms with gymnosperms during the mid-Mesozoic, long before the similar and independent coevolution of nectar-feeding flies, moths, and beetles on angiosperms.

Feeding mechanisms of adult Lepidoptera: structure, function, and evolution of the mouthparts.

  • H. Krenn
  • Biology
    Annual review of entomology
  • 2010
The form and function of the mouthparts in adult Lepidoptera and their feeding behavior are reviewed from evolutionary and ecological points of view. The formation of the suctorial proboscis

Pollen grains adhere to the moist mouthparts in the flower visiting beetle Cetonia aurata (Scarabaeidae, Coleoptera)

The examination of the mouthparts in rapidly frozen Cetonia aurata (Scarabaeidae) indicates a previously unknown technique of pollen uptake in Coleoptera, which represents a new approach to study functional morphology including the interaction of microstructures and fluids on cuticular surfaces of insects.

Pollen digestion by flower-feeding Scarabaeidae: protea beetles (Cetoniini) and monkey beetles (Hopliini).

Convergent evolution and adaptive radiation of beetle-pollinated angiosperms

  • P. Bernhardt
  • Environmental Science
    Plant Systematics and Evolution
  • 2004
The floras of Australia and western North America suggest that mutualistic interactions between beetles and flowers has been a continuous and labile trend in angiosperms with novel interactions evolving through the Tertiary.

Insects and Flowers

The relation between entomophilous flowers and the insects through the agency of which their pollination is effected constitutes no less remarkable an example of mutual specialisation than those already cited.

Intersexual Aggression and Nectar Defense in Chauliognathus distinguendus (Coleoptera: Cantharidae)

This paper describes resource defense by a soldier beetle, Chauliognathus distinguendus, which defends inflorescences of the tree Coccoloba floribunda against intrusion by conspecific individuals in Guanacaste Province, Costa Rica in 1974.