Navigation Links
Fossils clarify the origins of wasps and their kin: alderfly ancestors, snakefly cousins
Date:12/4/2013

Wasps, bees, ants and relatives comprise the megadiverse insect order Hymenoptera, the third most speciose animal group on Earth, far surpassing the number of known vertebrate species. All the four most diverse orders of animals (beetles, butterflies, wasps, and true flies) belong to the group of insects with complete metamorphosis, i.e. having a dormant pupa, jointly known as Holometabola. Other holometabolans are lacewings, alderflies, dobsonflies, snakeflies, scorpionflies, fleas, and caddisflies. Hymenopterans are currently regarded as a very old lineage, which had been the first to separate from the holometabolan stem, the view supported by molecular evidence.

Eighty years ago the Russian entomologist Andrey Martynovwell known for naming the two major divisions of winged insects Palaeoptera and Neoptera, stressing the importance of the wing folding pattern for insect evolutionsuggested that wasps had arisen from snakefly-like ancestors.

New fossils, which are 260270 million years old, support his view, firmly attaching the wasp lineage to the lacewing (neuropteroid) branch of the holometabolan family tree and dating its origin no earlier than Late Permian. These fossils are the oldest known Megaloptera: alderfly-like Parasialidae, and a newly discovered closely related family Nanosialidae.

Dr Dmitry Shcherbakov, a fossil insect specialist at the Arthropoda Lab, founded by Martynov at the Borissiak Paleontological Institute, Russian Academy of Sciences, Moscow argues that parasialids gave rise to both wasps and nanonosialids, and the latter became the ancestors of snakeflies. Living alderflies, dobsonflies, and snakeflies represent remnants of the past diversity of archaic neuropteroids, which presumably had diverse lifestyles. The study was published in the open access journal ZooKeys.

Parasialids were small to medium-sized; nanosialids were minute creatures 35 mm long and probably fed on jumping plant lice, common in the same fossil fauna. The earliest wasps, known from the mid-Triassic (about 240 million years ago), were rather small, too. "It appears that, early in their history," the author says, "the lineages of Megaloptera, Raphidioptera and Hymenoptera experienced miniaturization, which profoundly and irreversibly affected their body structure."


'/>"/>

Contact: Dr. Dmitry Shcherbakov
dshh@narod.ru
Pensoft Publishers
Source:Eurekalert  

Related biology news :

1. Feces fossils yield new insights into ancient diets and thrifty genes
2. Ancient fossils reveal how the mollusc got its teeth
3. Recent studies bring fossils and genes together to piece together evolutionary history
4. EARTH: Famous fossils and spectacular scenery at British Columbias Burgess Shale
5. Clam fossils divulge secrets of ecologic stability
6. Living fossils? Actually, sturgeon are evolutionary speedsters
7. Visualizing the past: Nondestructive imaging of ancient fossils
8. Researchers use CT and 3-D printers to recreate dinosaur fossils
9. RUB researchers clarify catalysis mechanism of cell growth protein Ras
10. Experts clarify conflicting criteria for diagnosing polycystic ovary syndrome
11. Mainz University coordinates new EU project on the origins of human settlement
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Fossils clarify the origins of wasps and their kin: alderfly ancestors, snakefly cousins
(Date:3/29/2017)... CHICAGO , March 29, 2017  higi, the ... ecosystem in North America , today ... Partners and the acquisition of EveryMove. The new investment ... extensive set of tools to transform population health activities ... and lifestyle data. higi collects and secures ...
(Date:3/24/2017)... , March 24, 2017 The Controller General of ... Mr. Abdulla Algeen have received the prestigious international IAIR Award ... Continue Reading ... ... and Deputy Controller Abdulla Algeen (small picture on the right) have received ...
(Date:3/23/2017)... -- Research and Markets has announced the addition of ... Industry Forecast to 2025" report to their offering. ... The Global Vehicle Anti-Theft ... 8.8% over the next decade to reach approximately $14.21 billion by ... and forecasts for all the given segments on global as well ...
Breaking Biology News(10 mins):
(Date:8/16/2017)... OH (PRWEB) , ... August 16, 2017 , ... ... a beneficial microbe delivery system, announced it has secured $2M in funding from ... Queen City Angels, Carmen Innovations, and SVG Thrive Fund. With this investment, 3Bar ...
(Date:8/16/2017)... and OXFORD, England , Aug. 16, 2017 ... for biotech executive search and leadership development, and Virdis Group, ... have created an exclusive alliance that enables clients to leverage ... "For our clients here in the ... access to a diverse population of leadership talent throughout the ...
(Date:8/15/2017)... ... August 15, 2017 , ... Nanomedical Diagnostics , ... development, announces the launch of the new NHS Agile biosensor chip . ... data for a wide range of molecules, including small and large molecules, peptides, ...
(Date:8/15/2017)... ... 2017 , ... Kenall, a leader in sealed solid-state lighting, ... sealed and perform efficiently for years. The downlights are ideal for a variety ... such as: hospitals; behavioral health facilities; cleanrooms; containment areas; food and pharmaceutical processing ...
Breaking Biology Technology: