By Laure-Anne Poissonnier Insect societies have long been part of the human imagination. Ants appear, for example, in fables, tales, and science fiction novels. They are often attributed to human qualities: the ant is hardworking, selfless, and well organized. It is true that when one observes an ant colony, one is forced to marvel at…
Category: Scientific news
Evolutionary history of phasms and phyllies
by Benoit GILLES The Order of Phasmatodea (phasms and phyllies), composed of more than 3,100 species and 500 genegenes, is one of the oldest groups of insects. They are popular for their ability to camouflage themselves in vegetation. Their morphology, sometimes displaying extravagant shapes, makes them look like twigs, leaves or bark in order to…
Insect disappearance: Causes and consequences
by Benoit GILLES With their presence on Earth for more than 400 million years, their diversity, their adaptability and their abundance, insects are an unprecedented biological success and an essential component to life on our planet. Today, one organism living on two and three out of four animals belong to their order. The ecological functions…
The memory of the desert ants
Odometer at Cataglyphis Fortis The Cataglyphis Fortis have the ability to return to the nest although they are in complete darkness. How do they estimate the distance to which the nest is located, and this in a straight line? A team of Swiss scientists led by Matthias Wittlinger (link) showed that the ant estimates the…
Colobopsis explodens: a detonating ant!!
In the already surprisingly diverse world of ants: morphology, behaviour, adaptation and ecology (read these articles Cataglyphis ; Atta ; Eciton ; Cephalotes ; Force), is added the description of a new species to the capacity of the most singular, that of being able to be literally exploded as a means of defense ! Described…
Evolution and adaptation in Rhagovelia bedbugs
Genes at the origin of new traits giving access to a new environment chez la punaise Rhagovelia (Heteroptera, Gerromorpha, Veliidae) Evolutionary innovations result in the appearance of new structures or behaviours during evolution (ex lien), a coloration pattern in butterflies (lien). The theory predicts that these events of appearance are unique to each innovation and…
A new species of South African Cerambycidae dedicated to Nelson Mandela
Post Views: 1,652 South Africa is known for its extraordinary flora and endemic fauna. The Cape Town Museum, one of the largest museums in Africa,
Orchids and beetles, a very ancient association
Post Views: 1,641 The first flowering plants to appear in the trias (-200 million years) diversified during the Cretaceous and all the Tertiary. caption id=”attachment_3567″
Evolutionary history of Heliconius staining
Post Views: 1,781 In insects, wings are subjected to strong natural selection pressures for camouflage, mimicry and warning coloration. The patterns and colours of butterfly
Escovopsis : Parasitism in mushroomists ants
Post Views: 2,344 Mushroom ants have the particularity of feeding exclusively on a Basidiomycete fungus, which they grow on a substrate fed by the collection
