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Pierre André Latreille

Pierre André Latreille
Pierre André Latreille
Born 29 November 1762
Brive-la-Gaillarde, Corrèze
Died 6 February 1833
Paris
Nationality French
Fields Entomology, arachnology, carcinology
Institutions Muséum National d'Histoire Naturelle
Alma mater University of Paris
Author abbrev. (zoology) Latreille

Pierre André Latreille (29 November 1762 – 6 February 1833) was a French zoologist, specialising in arthropods. Having trained as a Roman Catholic priest before the French Revolution, Latreille was imprisoned, and only regained his freedom after recognising a rare beetle species he found in the prison, Necrobia ruficollis.

He published his first important work in 1796 (Précis des caractères génériques des insectes), and was eventually employed by the Le Règne Animal, the only part not by Cuvier himself.

Latreille was considered the foremost entomologist of his time, and was described by one of his pupils as "the prince of entomologists".

Contents

  • Biography 1
    • Early life 1.1
    • Necrobia ruficollis 1.2
    • First Empire 1.3
    • Later years 1.4
    • Commemoration 1.5
  • Work 2
    • Taxonomy and systematics 2.1
    • Typification 2.2
  • References 3
  • External links 4

Biography

Latreille's birthplace in Brive-la-Gaillarde

Early life

Pierre André Latreille was born on November 29, 1762 in the town of Brive, then in the province of Limousin, as the illegitimate child of Jean Joseph Sahuguet d'Amarzit, général baron d'Espagnac, and an unknown mother; the surname "Latreille" was formally granted to him in 1813, and derives from a nickname of unclear provenance.[1] Latreille was orphaned at an early age, but had influential protectors – first a physician, then a merchant from Brive, and later a baron and his family (after the baron's death), who brought him to Paris in 1778.[2]

He studied in the Collège du Cardinal Lemoine to become a priest, initially in Brive, and later in Paris.[1] He entered the Grand Séminaire of Limoges in 1780, and left as a deacon in 1786. Despite being qualified to preach, Latreille later wrote that he had never carried out his functions as a minister, although for a few years he signed the letters he wrote "l'Abbé Latreille" ("the Reverend Latreille") or "Latreille, Prêtre" ("Latreille, Priest").[1]

Even during his studies, Latreille had taken on an interest in catching insects around Paris. He received lessons on botany from René Just Haüy, which allowed him to meet Jean-Baptiste Lamarck.[1]

Necrobia ruficollis

Discovering Necrobia ruficollis while in prison saved Latreille's life.

After the fall of the Ancien Régime and the start of the French Revolution, the Civil Constitution of the Clergy was declared in 1790, which required priests to swear an oath of allegiance to the state. Latreille failed to do so and was therefore imprisoned in November 1793 under threat of execution.[1]

When the prison's doctor inspected the prisoners, he was surprised to find Latreille scrutinising a beetle on the dungeon floor.[2] When Latreille explained that it was a rare insect, the physician was impressed, and sent the insect to a 15-year-old local naturalist, Jean Baptiste Bory de Saint-Vincent. Bory de St.-Vincent knew Latreille's work, and managed to obtain the release of Latreille and one of his cell-mates.[2] All the other inmates were dead within one month.[2] The beetle had been described by Johan Christian Fabricius in 1775,[3] but recognising it had saved Latreille's life.

Thereafter, Latreille lived as a teacher and corresponded with various entomologists, including Fabricius. In 1796, and with Fabricius' encouragement, Latreille published his Précis des caractères génériques des insectes at his own expense. He was briefly placed under Bernard Germain de Lacépède and Jean-Baptiste Lamarck (who all held chairs of zoology at the recently instituted Muséum national d'Histoire naturelle) succeeded in freeing Latreille.[1] In 1798, Latreille was appointed to the museum, where he worked alongside Lamarck, curating the arthropod collections, and published a number of zoological works.[1]

First Empire

Following the death of Le Règne Animal ("The animal kingdom"), and hundreds of entries in the Nouveau Dictionnaire d'Histoire Naturelle on entomological subjects.[1] As Lamarck became blind, Latreille took on an increasing proportion of his teaching and research work. In 1821, Latreille was made a knight of the Légion d'honneur.[1] In 1829 he succeeded Lamarck as professor of entomology.[4]

Later years

From 1824, Latreille's health deteriorated. He handed his lectures over to Jean Victoire Audouin and took on several assistants for his research work, including Amédée Louis Michel Lepeletier, Jean Guillaume Audinet-Serville and Félix Édouard Guérin-Méneville.[1] He was instrumental in the founding of the Société entomologique de France, and served as its honorary president.[1]

Latreille's wife became ill in 1830 and died in May of that year; the date of Latreille's marriage is unclear, and his request to be released from his vow of celibacy was never acknowledged.[1] He resigned his position at the museum on April 10, 1832, in order to move to the country and thereby avoid the cholera epidemic. He returned to Paris in November, and died of bladder disease on February 6, 1833.[1] He had no children but was survived by a niece whom he had adopted.[2]

Commemoration

A 3D model based on a micro-CT scan of the polychaete worm Lumbrineris latreilli, which is named after Latreille.

The Société entomologique raised the money to pay for a monument to Latreille. This was erected over Latreille's grave at Père Lachaise Cemetery, and comprised a 9-foot (2.7 m) obelisk with various inscriptions, including one to the beetle which had saved Latreille's life: "Necrobia ruficollis Latreillii salvator" ("Necrobia ruficollis, Latreille's saviour").[2]

As testimony to the high esteem in which Latreille was held, many books were dedicated to him, and up to 163 species were named in his honour between 1798 and 1850.[1] Taxa commemorating Latreille include:[5]

Work

Latreille named the rough woodlouse Porcellio scaber in 1804, and also established the genus Porcellio (1804), the sub-order Oniscidea (1802), the order Isopoda (1817) and the class Malacostraca (1802).

Latreille produced a significant body of scientific work, extending across several fields. He was described by Johan Christian Fabricius as entomologorum nostri aevi princeps ("the foremost entomologist of our time"), and by Jean Victoire Audouin as Entomologiae Princeps ("the prince of entomology").[1]

Taxonomy and systematics

Latreille was significant as the first person to attempt a natural classification of the arthropods.[6] His "eclectic method" of systematics incorporated evidence from all available characters without assuming a pre-defined goal; Latreille repeatedly dismissed anthropocentrism and teleology.[1]

As well as many species and countless genera, the names of many higher taxa are also attributable to Latreille,[1] including Thysanura, Siphonaptera, Pycnogonida, Ostracoda, Stomatopoda, Decapoda, Amphipoda, Isopoda, Xiphosura and Myriapoda.

Typification

Although Latreille named many species, his primary interest was in describing genera.[1] He introduced the concept of the "type species", a species to which the name of a genus is firmly attached.[1] Similarly, he favoured the method of naming families after one of the constituent genera, rather than some defining feature of the group, implicitly designating a type genus for the family.[1]

References

  1. ^ a b c d e f g h i j k l m n o p q r s t u Claude Dupuis (1974). "Pierre André Latreille (1762–1833): the foremost entomologist of his time" ( 
  2. ^ a b c d e f David M. Damkaer (2002). "A celebration of Crustacea". The Copepodologist's Cabinet: A Biographical and Bibliographical History, Volume 1. Memoirs of the American Philosophical Society, Volume 240.  
  3. ^ Lúcia M. Almeida & Kleber M. Mise (2009). "Diagnosis and key of the main families and species of South American Coleoptera of forensic importance".  
  4. ^  "Pierre-André Latreille".  
  5. ^ Hans G. Hansson. "Pierre André Latreille". Biographical Etymology of Marine Organism Names.  
  6. ^  

External links

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