The earliest recognized pollen-carrying pests lived about 280 million years ago

The earliest recognized fossils of pollen-laden bugs are of earwig-like ground-dwellers that resided in what is now Russia about 280 million years back, scientists report. Their finding presses back the fossil record of pests transferring pollen from one plant to another, an essential element of modern-day pollination, by about 120 million years.

The pests– from a pollen-eating genus called Tillyardembia Explained in 1937– were usually about 1.5 centimeters long, states Alexander Khramov, a paleoentomologist at the Borissiak Paleontological Institute in Moscow. Lightweight wings most likely kept the animals mainly on the forest flooring, he states, leaving them to climb up trees to discover and consume their pollen.

Just recently, Khramov and his associates inspected 425 fossils of Tillyardembia in the institute’s collection. 6 had clumps of pollen grains caught on their heads, legs, thoraxes or abdominal areas, the group reports February 28 in Biology LettersA percentage that little isn’t unexpected, Khramov states, since the fossils were maintained in what started as fine-grained sediments. The early phases of fossilization in such product would tend to remove pollen from the pests’ remains.

A picture of a Tillyardembia fossil left wing and on the right a tiny picture of clumps of pollen.
This fossil of Tillyardembia (left) is among 6 discovered with clumps of pollen (right) connected to the pest’s body.Alexander Khramov

The pollen-laden bugs had just a number of kinds of pollen caught on them, the group discovered, recommending that the animals were extremely selective in the tree types they went to. “That sort of expertise remains in line with prospective pollinators,” states Michael Engel, a paleoentomologist at the University of Kansas in Lawrence who was not associated with the research study. “There’s most likely large quantities of such expertise that happened even prior to Tillyardembiawe simply do not have proof of it yet.”

More research study of these fossils may expose if Tillyardembia had actually progressed unique pollen-trapping hairs or other such structures on their bodies or heads, states Conrad Labandeira, a paleoecologist at the National Museum of Natural History in Washington, D.C., likewise not part of the research study. It would likewise be intriguing, he states, to see if something about the pollen assisted it adhere to the pests. If the pollen grains had structures that allowed them to clump quicker, for instance, then those exact same functions might have assisted them get Velcro-like onto any hairlike structures on the bugs’ bodies.

Source: The earliest recognized pollen-carrying bugs lived about 280 million years ago

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