Josef Müller (entomologist)
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Josef Müller (24 April 1880 – 21 September 1964), also known as Giuseppe Müller, was a
Croatia Croatia, officially the Republic of Croatia, is a country in Central Europe, Central and Southeast Europe, on the coast of the Adriatic Sea. It borders Slovenia to the northwest, Hungary to the northeast, Serbia to the east, Bosnia and Herze ...
n
entomologist Entomology (from Ancient Greek ἔντομον (''éntomon''), meaning "insect", and -logy from λόγος (''lógos''), meaning "study") is the branch of zoology that focuses on insects. Those who study entomology are known as entomologists. In ...
.


Life

Josef Müller was born in 1880 in
Zadar Zadar ( , ), historically known as Zara (from Venetian and Italian, ; see also other names), is the oldest continuously inhabited city in Croatia. It is situated on the Adriatic Sea, at the northwestern part of Ravni Kotari region. Zadar ...
, at the time part of the
Austro-Hungarian Empire Austria-Hungary, also referred to as the Austro-Hungarian Empire, the Dual Monarchy or the Habsburg Monarchy, was a multi-national constitutional monarchy in Central Europe between 1867 and 1918. A military and diplomatic alliance, it consist ...
. In school, he acquired solid knowledge of the classical languages, as well as of the scientific method. In 1898, he moved to
Graz Graz () is the capital of the Austrian Federal states of Austria, federal state of Styria and the List of cities and towns in Austria, second-largest city in Austria, after Vienna. On 1 January 2025, Graz had a population of 306,068 (343,461 inc ...
and studied natural history in the faculty of philosophy, concluding his studies in 1902. His dissertation was about the morphology of
land planarian Geoplanidae is a family of flatworms known commonly as land planarians or land flatworms. These flatworms are mainly predators of other invertebrates, which they hunt, attack and capture using physical force and the adhesive and digestive proper ...
s. In 1900, he won the
University of Graz The University of Graz (, formerly: ''Karl-Franzens-Universität Graz'') is a public university, public research university located in Graz, Austria. It is the largest and oldest university in Styria, as well as the second-largest and second-old ...
's "Unger Prize" for a work on the anatomy of the roots of exotic
orchid Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Orchids are cosmopolitan plants that are found in almost every habitat on Eart ...
s. At this time he met many Austrian entomologists, such as
Ludwig Ganglbauer Ludwig Ganglbauer (1 October 1856, in Vienna – 5 June 1912, in Rekawinkel, near Kaltenbach Lower Austria), was an Austrian entomologist who specialised in Coleoptera (i.e. beetles). Ganglbauer became interested in insects during early childh ...
. After his doctor examination, Müller moved to
Trieste Trieste ( , ; ) is a city and seaport in northeastern Italy. It is the capital and largest city of the Regions of Italy#Autonomous regions with special statute, autonomous region of Friuli-Venezia Giulia, as well as of the Province of Trieste, ...
, where he started teaching
natural history Natural history is a domain of inquiry involving organisms, including animals, fungi, and plants, in their natural environment, leaning more towards observational than experimental methods of study. A person who studies natural history is cal ...
in Trieste High School and joined the Società Adriaca de Scienze Naturali. Later, he and other entomologists founded an entomology club and developed a comprehensive work program. This led him to study the
arthropod Arthropods ( ) are invertebrates in the phylum Arthropoda. They possess an arthropod exoskeleton, exoskeleton with a cuticle made of chitin, often Mineralization (biology), mineralised with calcium carbonate, a body with differentiated (Metam ...
fauna found in caves of the Trieste region, especially blind insects. After presenting his results at the International Congress of Zoology in Graz, he became known in larger circles and started many scientific cooperations. One of his most notable works at the time was his monography on blind
ground beetle Ground beetles are a large, cosmopolitan distribution, cosmopolitan family (biology), family of beetles, the Carabidae, with more than 40,000 species worldwide, around 2,000 of which are found in North America and 2,700 in Europe. As of 2015, it ...
s, the "Monographie der blinden Trechen der Ostalpen und Balkanhalbinsel", for which he was awarded the Ganglbauer Prize. During
World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
, his work was interrupted and he was drafted into the military service. There, his entomological knowledge proved to be valuable in the control of diseases transmitted by insects. He spent his first year in an anti-malaria station in
Albania Albania ( ; or ), officially the Republic of Albania (), is a country in Southeast Europe. It is located in the Balkans, on the Adriatic Sea, Adriatic and Ionian Seas within the Mediterranean Sea, and shares land borders with Montenegro to ...
and later was invited to the bacteriological laboratory in
Vienna Vienna ( ; ; ) is the capital city, capital, List of largest cities in Austria, most populous city, and one of Federal states of Austria, nine federal states of Austria. It is Austria's primate city, with just over two million inhabitants. ...
. In his study on the
body louse The body louse (''Pediculus humanus humanus'', also known as ''Pediculus humanus corporis'') or the cootie is a hematophagic ectoparasite louse that infests humans. It is one of three lice which infest humans, the other two being the head lo ...
, he proved that the bacteria ''
Rickettsia prowazekii ''Rickettsia prowazekii'' is a species of gram-negative, obligate intracellular parasitic, aerobic bacilliform bacteria of class Alphaproteobacteria that is the etiologic agent of epidemic typhus, transmitted in the feces of lice. In North Am ...
'', known to cause
epidemic typhus Epidemic typhus, also known as louse-borne typhus, is a form of typhus so named because the disease often causes epidemics following wars and natural disasters where civil life is disrupted. Epidemic typhus is spread to people through contact wit ...
, is transmitted by the insect. In 1921, Müller became the conservator of the
Natural History Museum A natural history museum or museum of natural history is a scientific institution with natural history scientific collection, collections that include current and historical records of animals, plants, Fungus, fungi, ecosystems, geology, paleo ...
in Trieste, and two years later became the director of the museum and of the botanical gardens. From 1930 to 1940, he traveled several times to North Africa to collect and study beetles of the family
Histeridae Histeridae is a family (biology), family of beetles commonly known as clown beetles or hister beetles. There are more than 410 genera and 4,800 described species in Histeridae worldwide, with more than 500 species in North America. They can be id ...
. He also planned the construction of an aquarium in Trieste, which included many coral fish from
Red Sea The Red Sea is a sea inlet of the Indian Ocean, lying between Africa and Asia. Its connection to the ocean is in the south, through the Bab-el-Mandeb Strait and the Gulf of Aden. To its north lie the Sinai Peninsula, the Gulf of Aqaba, and th ...
and that was opened in 1933. He left the museum in 1946 due to his age. He died in Trieste in 1964, aged 84.


Work

Most of Müller's work was focused on beetles, especially
carabid Ground beetles are a large, cosmopolitan family of beetles, the Carabidae, with more than 40,000 species worldwide, around 2,000 of which are found in North America and 2,700 in Europe. As of 2015, it is one of the 10 most species-rich animal fa ...
beetles, and he described 757 new
insect Insects (from Latin ') are Hexapoda, hexapod invertebrates of the class (biology), class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (Insect morphology#Head, head, ...
taxa In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and ...
, including many new genera. He also studied other animal groups, such as
pseudoscorpion Pseudoscorpions, also known as false scorpions or book scorpions, are small, scorpion-like arachnids belonging to the order Pseudoscorpiones, also known as Pseudoscorpionida or Chelonethida. Pseudoscorpions are generally beneficial to humans bec ...
s,
crustacean Crustaceans (from Latin meaning: "those with shells" or "crusted ones") are invertebrate animals that constitute one group of arthropods that are traditionally a part of the subphylum Crustacea (), a large, diverse group of mainly aquatic arthrop ...
s,
reptile Reptiles, as commonly defined, are a group of tetrapods with an ectothermic metabolism and Amniotic egg, amniotic development. Living traditional reptiles comprise four Order (biology), orders: Testudines, Crocodilia, Squamata, and Rhynchocepha ...
s and
birds of prey Birds of prey or predatory birds, also known as (although not the same as) raptors, are hypercarnivorous bird species that actively predation, hunt and feed on other vertebrates (mainly mammals, reptiles and smaller birds). In addition to speed ...
. Selected works: * * * * * * * * * * * * * * * *


References

{{DEFAULTSORT:Muller, Josef 1880 births 1964 deaths Croatian zoologists 20th-century Italian zoologists Croatian entomologists Italian entomologists Directors of museums in Italy University of Graz alumni People from Zadar 20th-century Croatian scientists Zoologists from Austria-Hungary