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Pekka T. Lehtinen (born 1934) is a Finnish
arachnologist Arachnology is the scientific study of arachnids, which comprise spiders and related invertebrates such as scorpions, pseudoscorpions, and harvestmen. Those who study spiders and other arachnids are arachnologists. More narrowly, the study of sp ...
and
taxonomist In biology, taxonomy () is the scientific study of naming, defining ( circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxa (singular: taxon) and these groups are given ...
. He is known for his works in
systematics Biological systematics is the study of the diversification of living forms, both past and present, and the relationships among living things through time. Relationships are visualized as evolutionary trees (synonyms: cladograms, phylogenetic tre ...
and for the many expeditions in which he has participated.


Biography

Lehtinen was born on 5 April 1934 in a small village,
Pargas Pargas ( fi, Parainen) is a town and municipality of Finland, in the Archipelago Sea, the biggest archipelago in the world by the number of islands, 50,000. The big limestone mine in Pargas is the base of the main industry and except for the centr ...
, in the archipelago of southwestern Finland. He graduated from a senior high school in
Turku Turku ( ; ; sv, Åbo, ) is a city and former capital on the southwest coast of Finland at the mouth of the Aura River, in the region of Finland Proper (''Varsinais-Suomi'') and the former Turku and Pori Province (''Turun ja Porin lääni''; ...
in 1952. In the same year he entered the
University of Turku sv, Åbo universitet , latin_name = Universitas Aboensis , image_name = University of Turku.svg , motto = ''Vapaan kansan lahja vapaalle tieteelle'' , established = 1920 , type ...
and was awarded an MSc degree in February 1955, two and a half years later. After graduating he served in the military for one year, and was trained in the reserve officers' school, where he was given the rank of Second Lieutenant. He worked as an assistant lecturer in the Department of
Zoology Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the Animal, animal kingdom, including the anatomy, structure, embryology, evolution, Biological clas ...
and in the Faculty of Medicine (preclinical courses) of the
University of Turku sv, Åbo universitet , latin_name = Universitas Aboensis , image_name = University of Turku.svg , motto = ''Vapaan kansan lahja vapaalle tieteelle'' , established = 1920 , type ...
from 1956 to 1967. After working for several years with a different theme for his PhD thesis, in 1967 Lehtinen published "Classification of the
Cribellate Cribellum literally means "little sieve", and in biology the term generally applies to anatomical structures in the form of tiny perforated plates. In certain groups of diatoms it refers to microscopically punctured regions of the frustule, or o ...
spiders and some allied families, with notes on the evolution of the suborder
Araneomorphae The Araneomorphae (also called the Labidognatha) are an infraorder of spiders. They are distinguishable by chelicerae (fangs) that point diagonally forward and cross in a pinching action, in contrast to the Mygalomorphae (tarantulas and their cl ...
" and defended his submission for the degree of PhD in September. In January 1968 he was nominated as the Head Curator at the Zoological Museum of the
University of Turku sv, Åbo universitet , latin_name = Universitas Aboensis , image_name = University of Turku.svg , motto = ''Vapaan kansan lahja vapaalle tieteelle'' , established = 1920 , type ...
, where he stayed until his retirement in 1999. In 1968 he obtained the position of Docent of Zoology at the universities of Turku and Helsinki. He taught mainly in
Helsinki Helsinki ( or ; ; sv, Helsingfors, ) is the Capital city, capital, primate city, primate, and List of cities and towns in Finland, most populous city of Finland. Located on the shore of the Gulf of Finland, it is the seat of the region of U ...
, as there was no funding for separately budgeted advanced teaching in Turku.


Scientific activities

The activity of Pekka Lehtinen has been dealt with briefly by Koponen
011 The following is a list of different international call prefixes that need to be dialled when placing an international telephone call from different countries. Countries by international prefix Countries using optional carrier selection cod ...
and Marusik
011 The following is a list of different international call prefixes that need to be dialled when placing an international telephone call from different countries. Countries by international prefix Countries using optional carrier selection cod ...
and more comprehensively by Marusik 004, in Russian Pekka Lehtinen started his career as a
malacologist Malacology is the branch of invertebrate zoology that deals with the study of the Mollusca (mollusks or molluscs), the second-largest phylum of animals in terms of described species after the arthropods. Mollusks include snails and slugs, clams, ...
; his MSc thesis dealt with terrestrial gastropods in the Finnish archipelago. In addition to
gastropods The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. Ther ...
, he also actively studied
millipedes Millipedes are a group of arthropods that are characterised by having two pairs of jointed legs on most body segments; they are known scientifically as the class Diplopoda, the name derived from this feature. Each double-legged segment is a resu ...
,
centipedes Centipedes (from New Latin , "hundred", and Latin , "foot") are predatory arthropods belonging to the class Chilopoda (Ancient Greek , ''kheilos'', lip, and New Latin suffix , "foot", describing the forcipules) of the subphylum Myriapoda, an a ...
, and
terrestrial isopods Terrestrial refers to things related to land or the planet Earth. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on or near the ground, as opposed to ...
of the SW-archipelago and worked for many years on a planned doctoral thesis concerning the colonization of this unique archipelago by terrestrial invertebrates. He collected his first arachnological samples in 1957, and in 1962 Lehtinen published his first (faunistic) paper on
spiders Spiders ( order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species dive ...
. Subsequently, he changed the theme of his PhD to the
taxonomy Taxonomy is the practice and science of categorization or classification. A taxonomy (or taxonomical classification) is a scheme of classification, especially a hierarchical classification, in which things are organized into groups or types. ...
of
spiders Spiders ( order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species dive ...
, because he soon realized that there were a lot of unsolved large-scale problems. From the time Lehtinen started to work on his PhD thesis up until the present, he has visited almost all the leading museums in the world (he visited the
MNHN The French National Museum of Natural History, known in French as the ' (abbreviation MNHN), is the national natural history museum of France and a ' of higher education part of Sorbonne Universities. The main museum, with four galleries, is loca ...
in
Paris Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. S ...
11 times) and/or loaned types and comparative material in order to study poorly available faunas collected from remote islands and territories. To date he has visited over 60 museums. After gaining a permanent position at the
University of Turku sv, Åbo universitet , latin_name = Universitas Aboensis , image_name = University of Turku.svg , motto = ''Vapaan kansan lahja vapaalle tieteelle'' , established = 1920 , type ...
, Lehtinen started to carry out extensive expeditions world-wide, a practice which he has continued to the present. Since 1969 he has visited over 70 countries in search for
spiders Spiders ( order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species dive ...
,
mites Mites are small arachnids (eight-legged arthropods). Mites span two large orders of arachnids, the Acariformes and the Parasitiformes, which were historically grouped together in the subclass Acari, but genetic analysis does not show clear evid ...
,
harvestmen The Opiliones (formerly Phalangida) are an order of arachnids colloquially known as harvestmen, harvesters, harvest spiders, or daddy longlegs. , over 6,650 species of harvestmen have been discovered worldwide, although the total number of ext ...
,
pseudoscorpions 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 sin ...
,
terrestrial isopods Terrestrial refers to things related to land or the planet Earth. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on or near the ground, as opposed to ...
,
myriapods Myriapods () are the members of subphylum Myriapoda, containing arthropods such as millipedes and centipedes. The group contains about 13,000 species, all of them terrestrial. The fossil record of myriapods reaches back into the late Silurian, a ...
,
molluscs Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant taxon, extant species of molluscs are recognized. The number of fossil sp ...
and other
invertebrates Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ...
. Some of the countries he visited four or even more times, such as India, Philippines, Sri Lanka, Thailand, Malaysia, Indonesia and
French Polynesia )Territorial motto: ( en, "Great Tahiti of the Golden Haze") , anthem = , song_type = Regional anthem , song = " Ia Ora 'O Tahiti Nui" , image_map = French Polynesia on the globe (French Polynesia centered).svg , map_alt = Location of Frenc ...
. His first expedition to the Tropics was to
Sri Lanka Sri Lanka (, ; si, ශ්‍රී ලංකා, Śrī Laṅkā, translit-std=ISO (); ta, இலங்கை, Ilaṅkai, translit-std=ISO ()), formerly known as Ceylon and officially the Democratic Socialist Republic of Sri Lanka, is an ...
(1969) and his most recent expeditions were to
Gambia The Gambia,, ff, Gammbi, ar, غامبيا officially the Republic of The Gambia, is a country in West Africa. It is the smallest country within mainland AfricaHoare, Ben. (2002) ''The Kingfisher A-Z Encyclopedia'', Kingfisher Publicatio ...
-
Senegal Senegal,; Wolof: ''Senegaal''; Pulaar: 𞤅𞤫𞤲𞤫𞤺𞤢𞥄𞤤𞤭 (Senegaali); Arabic: السنغال ''As-Sinighal'') officially the Republic of Senegal,; Wolof: ''Réewum Senegaal''; Pulaar : 𞤈𞤫𞤲𞤣𞤢𞥄𞤲𞤣𞤭 ...
(2011),
Kenya ) , national_anthem = "Ee Mungu Nguvu Yetu"() , image_map = , map_caption = , image_map2 = , capital = Nairobi , coordinates = , largest_city = Nairobi , ...
-
Mauritius Mauritius ( ; french: Maurice, link=no ; mfe, label=Mauritian Creole, Moris ), officially the Republic of Mauritius, is an island nation in the Indian Ocean about off the southeast coast of the African continent, east of Madagascar. It incl ...
(2012) and
Tahiti Tahiti (; Tahitian ; ; previously also known as Otaheite) is the largest island of the Windward group of the Society Islands in French Polynesia. It is located in the central part of the Pacific Ocean and the nearest major landmass is Austr ...
-
Moorea Moorea ( or ; Tahitian: ), also spelled Moorea, is a volcanic island in French Polynesia. It is one of the Windward Islands, a group that is part of the Society Islands, northwest of Tahiti. The name comes from the Tahitian word , meaning " ...
(2013). Most of the expeditions and congress trips have been done without any funding from his home country, mostly supported from his own pension. All materials collected during these expeditions (
spiders Spiders ( order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species dive ...
and other
invertebrates Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ...
) were sorted and properly labelled by himself. All spiders were sorted to families, and most of them to genera. It seems that nobody in the history of arachnological studies can be compared with Lehtinen in respect to the number of expeditions, and their geography. Some arachnologists call Lehtinen an "illustrious
Eugène Simon Eugène Louis Simon (; 30 April 1848 – 17 November 1924) was a French naturalist who worked particularly on insects and spiders, but also on birds and plants. He is by far the most prolific spider taxonomist in history, describing over 4, ...
" (referring to the fact that Simon also traveled a lot, surveyed all spider families, although published rather few figures). Pekka Lehtinen has participated in all international congresses of
arachnology Arachnology is the scientific study of arachnids, which comprise spiders and related invertebrates such as scorpions, pseudoscorpions, and harvestmen. Those who study spiders and other arachnids are arachnologists. More narrowly, the study of sp ...
: the pre-CIDA Congress in
Frankfurt am Main Frankfurt, officially Frankfurt am Main (; Hessian: , "Frank ford on the Main"), is the most populous city in the German state of Hesse. Its 791,000 inhabitants as of 2022 make it the fifth-most populous city in Germany. Located on its na ...
(1965), and then in
Paris Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. S ...
(1968),
Brno Brno ( , ; german: Brünn ) is a city in the South Moravian Region of the Czech Republic. Located at the confluence of the Svitava and Svratka rivers, Brno has about 380,000 inhabitants, making it the second-largest city in the Czech Republic ...
(1971),
Amsterdam Amsterdam ( , , , lit. ''The Dam on the River Amstel'') is the Capital of the Netherlands, capital and Municipalities of the Netherlands, most populous city of the Netherlands, with The Hague being the seat of government. It has a population ...
(1974),
Exeter Exeter () is a city in Devon, South West England. It is situated on the River Exe, approximately northeast of Plymouth and southwest of Bristol. In Roman Britain, Exeter was established as the base of Legio II Augusta under the personal comm ...
, UK (1977, as an invited speaker),
Vienna en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST ...
(1980),
Panama Panama ( , ; es, link=no, Panamá ), officially the Republic of Panama ( es, República de Panamá), is a transcontinental country spanning the southern part of North America and the northern part of South America. It is bordered by Cos ...
(1983),
Jaca Jaca (; in Aragonese: ''Chaca'' or ''Xaca'') is a city of northeastern Spain in the province of Huesca, located near the Pyrenees and the border with France. Jaca is an ancient fort on the Aragón River, situated at the crossing of two great ea ...
, Spain (1986),
Turku Turku ( ; ; sv, Åbo, ) is a city and former capital on the southwest coast of Finland at the mouth of the Aura River, in the region of Finland Proper (''Varsinais-Suomi'') and the former Turku and Pori Province (''Turun ja Porin lääni''; ...
(1989),
Brisbane Brisbane ( ) is the capital and most populous city of the states and territories of Australia, Australian state of Queensland, and the list of cities in Australia by population, third-most populous city in Australia and Oceania, with a populati ...
(1992),
Geneva Geneva ( ; french: Genève ) frp, Genèva ; german: link=no, Genf ; it, Ginevra ; rm, Genevra is the List of cities in Switzerland, second-most populous city in Switzerland (after Zürich) and the most populous city of Romandy, the French-speaki ...
(1995),
Chicago (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name ...
(1998),
Badplaas Badplaas, officially eManzana, is a small town on the R38 road in eastern Mpumalanga, South Africa. It was established in 1876 on the Seekoeispruit, in the foothills of the Dlomodlomo Mountains (meaning "place of much thunder"), at the site of ...
, South Africa (2001, as an invited speaker),
Ghent Ghent ( nl, Gent ; french: Gand ; traditional English: Gaunt) is a city and a municipality in the Flemish Region of Belgium. It is the capital and largest city of the East Flanders province, and the third largest in the country, exceeded in ...
, Belgium (2003), Saõ Pedro, Brazil (2007),
Siedlce Siedlce [] ( yi, שעדליץ ) is a city in eastern Poland with 77,354 inhabitants (). Situated in the Masovian Voivodeship (since 1999), previously the city was the capital of a separate Siedlce Voivodeship (1975–1998). The city is situated b ...
, Poland (2010) and
Kenting Kenting National Park (), commonly known as Kenting (), is a national park located on the Hengchun Peninsula of Pingtung County, Taiwan, covering Hengchun, Checheng, and Manzhou Townships. Established on 1 January 1984, it is Taiwan's oldest ...
, Taiwan (2013). He acted as the chairman of the Organizing Committee of the Turku Congress, 1989, and was one of the editors of its Proceedings. He has also attended two European Colloquia (
Aarhus Aarhus (, , ; officially spelled Århus from 1948 until 1 January 2011) is the second-largest city in Denmark and the seat of Aarhus Municipality. It is located on the eastern shore of Jutland in the Kattegat sea and approximately northwest ...
and
St. Petersburg Saint Petersburg ( rus, links=no, Санкт-Петербург, a=Ru-Sankt Peterburg Leningrad Petrograd Piter.ogg, r=Sankt-Peterburg, p=ˈsankt pʲɪtʲɪrˈburk), formerly known as Petrograd (1914–1924) and later Leningrad (1924–1991), i ...
). In 2001 during the ISA congress held in South Africa, he was elected as an Honorary Member of the
International Society of Arachnology The International Society of Arachnology (ISA) promotes the study of arachnids and the exchange of information among researchers in this field. It acts as an umbrella organisation for regional societies and individuals interested in spiders, and ...
. In 2007 at another congress, Lehtinen was again elected as an Honorary Member. Currently he is only arachnologist who is a ‘twofold’ Honorary Member of the ISA. Since 1965, Lehtinen represented Finland in CIDA (Centre International de Documentation Arachnologique), until this organization was transformed to the ISA (
International Society of Arachnology The International Society of Arachnology (ISA) promotes the study of arachnids and the exchange of information among researchers in this field. It acts as an umbrella organisation for regional societies and individuals interested in spiders, and ...
) in 1998. Lehtinen has always been active in nature conservation projects, both in field studies and (from 1983) as a member of different committees and working groups, for example, in compiling the Finnish Red Data Books. Ministers of the Environment in French Polynesia, the Cook Islands and Mauritius have also consulted him in matters of nature conservation. Part of his acarological studies have concerned national projects in medical
acarology Acarology (from Ancient Greek /, , a type of mite; and , ) is the study of mites and ticks, the animals in the order Acarina. It is a subfield of arachnology, a subdiscipline of the field of zoology. A zoologist specializing in acarology is cal ...
(mite allergy 1987-90 – the only totally funded project during his whole carrier) and
borreliosis Lyme disease, also known as Lyme borreliosis, is a vector-borne disease caused by the ''Borrelia'' bacterium, which is spread by ticks in the genus ''Ixodes''. The most common sign of infection is an expanding red rash, known as erythema migran ...
1991–2009. Lehtinen is well known not only amongst
arachnologists Arachnology is the scientific study of arachnids, which comprise spiders and related invertebrates such as scorpions, pseudoscorpions, and harvestmen. Those who study spiders and other arachnids are arachnologists. More narrowly, the study of sp ...
, but also amongst the wider zoological community. Since August 1980 up until the Congress in Athens 2000 he was a member of the ICZN (
International Commission on Zoological Nomenclature The International Commission on Zoological Nomenclature (ICZN) is an organization dedicated to "achieving stability and sense in the scientific naming of animals". Founded in 1895, it currently comprises 26 commissioners from 20 countries. Orga ...
). In 1990 he became a council member and participated in preparing of the new Code. While working for the ICZN Committee he attended the following meetings:
Ottawa Ottawa (, ; Canadian French: ) is the capital city of Canada. It is located at the confluence of the Ottawa River and the Rideau River in the southern portion of the province of Ontario. Ottawa borders Gatineau, Quebec, and forms the core ...
1982,
Budapest Budapest (, ; ) is the capital and most populous city of Hungary. It is the ninth-largest city in the European Union by population within city limits and the second-largest city on the Danube river; the city has an estimated population ...
1985,
Canberra Canberra ( ) is the capital city of Australia. Founded following the federation of the colonies of Australia as the seat of government for the new nation, it is Australia's largest inland city and the eighth-largest city overall. The ci ...
1988,
Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on ...
1990 (special meeting for adoption of the new Code),
Amsterdam Amsterdam ( , , , lit. ''The Dam on the River Amstel'') is the Capital of the Netherlands, capital and Municipalities of the Netherlands, most populous city of the Netherlands, with The Hague being the seat of government. It has a population ...
1991,
Paris Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. S ...
1994,
Taipei Taipei (), officially Taipei City, is the capital and a special municipality of the Republic of China (Taiwan). Located in Northern Taiwan, Taipei City is an enclave of the municipality of New Taipei City that sits about southwest of the n ...
1998 and
Athens Athens ( ; el, Αθήνα, Athína ; grc, Ἀθῆναι, Athênai (pl.) ) is both the capital and largest city of Greece. With a population close to four million, it is also the seventh largest city in the European Union. Athens dominates ...
2000. Lehtinen was active on the world forum several times, for example, as a member of the Organizing Committee of the ICSEB (International Congress of Systematic and Evolutionary Biology) held in 1990 in Washington, D.C. and in 1996 in
Budapest Budapest (, ; ) is the capital and most populous city of Hungary. It is the ninth-largest city in the European Union by population within city limits and the second-largest city on the Danube river; the city has an estimated population ...
, when he served as a member of the IOSEB Council (International Organization for Systematic and Evolutionary Biology). He has discovered the following spider and mite taxa:


References

* Pekka T. Lehtinen, Yuri M. Marusik. 2008. ''A Redefinition of Misumenops F.O. Pickard-Cambridge, 1900 (Araneae, Thomisidae) and Review of the New World Species''. Bull. of the British Arachnological Soc. 14 (4): 27 pp. Editor British Arachn. Soc. * Pekka T. Lehtinen. 1981. ''Spiders of the Oriental-Australian Region, III: Tetrablemmidae, with a World Revision''. Acta zoologica Fennica 162. Editor Finnish Zoological Publ. Board, 151 pp. * Pekka T. Lehtinen. 1981. ''Tetrablemmidae, with a World Revision''. Acta zoologica Fennica 162. Con Heikki Hippa. Editor Finnish Zoological Publ. Board, 151 pp. * Pekka T. Lehtinen. 1979. ''Lycosidae''. Annales zoologici Fennici 11 y 16. Con Heikki Hippa. Editor Finnish Zoological Publ. Board * Pekka T. Lehtinen. 1967. ''Classification of the Cribellate Spiders and Some Allied Families: With Notes on the Evolution of the Suborder Araneomorpha''. Edición reimpresa de Societas Zoologica Botanica Fennica Vanamo, 269 pp.


External links


Pekka T. Lehtinen, University of Turku
{{DEFAULTSORT:Lehtinen, Pekka T. Finnish entomologists Arachnologists Finnish taxonomists 1934 births Living people People from Pargas University of Turku alumni Academic staff of the University of Turku