Tobias' caddisfly
Encyclopedia
Tobias' caddisfly was a caddisfly which lived on the River Rhine between Mainz
and Cologne
. It was last seen in 1938 and was described in 1977 by Austria
n entomologist Hans Malicky on the basis of material he found in earlier collections. Very little is known about the species and no larva
e were ever found. The River Rhine has been a subject to urban and industrial pollution for several decades during the 20th century. This had led to the decline and disappearance of many caddisfly species on several riversides of the Rhine.
Mainz
Mainz under the Holy Roman Empire, and previously was a Roman fort city which commanded the west bank of the Rhine and formed part of the northernmost frontier of the Roman Empire...
and Cologne
Cologne
Cologne is Germany's fourth-largest city , and is the largest city both in the Germany Federal State of North Rhine-Westphalia and within the Rhine-Ruhr Metropolitan Area, one of the major European metropolitan areas with more than ten million inhabitants.Cologne is located on both sides of the...
. It was last seen in 1938 and was described in 1977 by Austria
Austria
Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...
n entomologist Hans Malicky on the basis of material he found in earlier collections. Very little is known about the species and no larva
Larva
A larva is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle...
e were ever found. The River Rhine has been a subject to urban and industrial pollution for several decades during the 20th century. This had led to the decline and disappearance of many caddisfly species on several riversides of the Rhine.