Recent Studies on Functional Morphological Diversity of Insects

A special issue of Insects (ISSN 2075-4450).

Deadline for manuscript submissions: 28 February 2027 | Viewed by 4607

Special Issue Editors


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Guest Editor
Biocenter, Ludwig-Maximilians-Universität München, Großhaderner Str. 2, 82152 Planegg-Martinsried, Germany
Interests: evolution; functional morphology; palaeoentomology

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Guest Editor
Medical Biology and Electron Microscopy Center, University Medical Center Rostock, Strempelstr. 14, 18057 Rostock, Germany
Interests: functional morphology; palaeoentomology; medical entomology

Special Issue Information

Dear Colleagues,

Insects are highly diverse, not only concerning the number of species, but also in the ecological functions they perform. This large diversity is reflected by a huge spectrum of morphological adaptations, which allow performing different functions. Examples of these diverse structures include different types and shapes of mouthparts, legs, eyes, or wings, which are adapted to the environments the insects inhabit. These differences in structures can be characteristic of specific groups, or similar structures have evolved convergently in only distantly related insect groups.

In this Special Issue, the functional morphological diversity of insects is in focus. Entomological studies from diverse areas are welcome, for example, morphology, ecology, behavioural biology, evolutionary biology, or palaeontology. The scientific contributions should provide a comprehensive view on the topic, aiming at a broader understanding of the plethora of functional morphological diversity in insects.

Dr. Carolin Haug
Dr. Marie K. Hörnig
Guest Editors

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Keywords

  • biodiversity
  • morphology
  • behaviour
  • ecology
  • evolution

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Published Papers (1 paper)

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Research

14 pages, 3382 KB  
Article
A True Bug with a True but Unique Chela in 100 Million-Year-Old Amber
by Carolin Haug, Fenja I. Haug, Marie K. Hörnig, Florian Braig and Joachim T. Haug
Insects 2026, 17(4), 431; https://doi.org/10.3390/insects17040431 - 17 Apr 2026
Viewed by 4375
Abstract
Grasping appendages in representatives of the group Insecta are usually of the sub-chelate (jackknifing) type. Only rarely do chelate appendages occur: Carcinothrips (Thysanoptera), Dryinidae (Hymenoptera), and Carcinocorini (Heteroptera). Here, we report a new find from about 100 million-year-old Kachin amber, representing, to our [...] Read more.
Grasping appendages in representatives of the group Insecta are usually of the sub-chelate (jackknifing) type. Only rarely do chelate appendages occur: Carcinothrips (Thysanoptera), Dryinidae (Hymenoptera), and Carcinocorini (Heteroptera). Here, we report a new find from about 100 million-year-old Kachin amber, representing, to our knowledge, the first case of a fossil of the group Insecta with a chelate type of appendage. This find is only the fourth case of an independent or convergent evolution of such a structure. A quantitative morphological comparison of over 2000 grasping structures reveals that the proximal part of the chela (in this case, the femur) has a unique shape in the fossil, unparalleled in the fossil and modern fauna. Moreover, some other new fossils reported do not possess such a shape. The mouthparts, forming a distinct beak, allow us to identify the new fossil with the distinct chela as a representative of Heteroptera. Its short beak, together with some other characteristics, indicates that it most likely is a representative of Nepomorpha. Many other details of the fossil are not well preserved, but the overall appearance shows similarities to extant and fossil representatives of Gelastocoridae, a group of terrestrial predators. Full article
(This article belongs to the Special Issue Recent Studies on Functional Morphological Diversity of Insects)
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