Pachymerium

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Pachymerium
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Myriapoda
Class: Chilopoda
Order: Geophilomorpha
Family: Geophilidae
Genus: Pachymerium
C. L. Koch, 1847

Pachymerium is a genus of centipedes in the family Geophilidae found mainly in the west Palearctic region and in south Africa. [1] Centipedes in this genus feature an elongate head, scattered coxal pores, and sternal pores in a pair of anterior groups and a posterior transverse band; the forcipular coxosternite is broad, and the ultimate article of the forcipule has a prominent basal denticle. [1]

These centipedes range from about 2 cm to about 8 cm in length and have 37 to 79 pairs of legs. [1] The Chilean species Pachymerium armatum measures only 20 mm in length and has only 37 leg pairs, [2] the minimum number recorded in this genus. [1] The Russian species P. minutum is also notable for its small size (only 17 mm in length) and its modest number of legs (39 pairs in each sex). [3] [4] The Portuguese species P. coiffaiti is notable for its large size (males reaching 58 mm in length, females ranging from 70 mm to 85 mm) and many legs (males with 69 pairs, females with 73 or 75). [5] [4] The Cuban species P. cubanum and the large Turkish species P. serratum (measuring 50 mm and 78 mm in length, respectively) each can have as many as 79 leg pairs, [6] [7] the maximum number recorded in this genus. [1]

This genus contains the following species: [8]

Related Research Articles

Pachymerium caucasicum is a species of centipede in Geophilidae family. It was described by Carl Attems in 1903 and is endemic to the European part of Turkey. Males of this species have 47 pairs of legs; females have 49 pairs of legs. Authorities now deem P. caucasicum to be a junior synonym of P. ferrugineum.

Pachymerium syriacum is a species of centipede in the family Geophilidae that is endemic to the Dodecanese Islands. The original description of this species is based on a female specimen measuring 110 mm in length with 87 pairs of legs. More recently, authorities have assigned this species to another genus under the name Gnathoribautia syriaca.

Pachymerium tabacarui is a species of centipede in Geophilidae family that is endemic to Romania. The original description of this species is based on a female specimen from the Carpathians measuring 15 mm in length with 53 pairs of legs. Authorities now consider this description consistent with a juvenile specimen of P. ferrugineum and therefore deem P. tabacarui to be a junior synonym of that species. Extensive investigations in the Carpathian region have failed to collect any more specimens.

<i>Geophilus</i> Genus of centipedes

Geophilus is a large, heterogeneous genus of soil centipedes in the family Geophilidae largely considered to be synonymous with Brachygeophilus. This genus is mostly Holarctic and characterized by a claw-shaped ultimate pretarsus, complete or nearly complete coxo-pleural sutures at the prosternum, and incomplete chitin-lines. Centipedes in this genus feature slightly elongate heads and labral intermediate parts with tubercles, the forcipules are usually poorly elongate with a single small tubercle at the base of each tarsungulum, and the anterior trunk metasternites usually have an anterior medial socket and a posterior transversally elongate pore-field. The generic name first appeared in Brewster's Edinburgh Encyclopaedia in 1814 as Geophilus electricus.

<span class="mw-page-title-main">Schendylidae</span> Family of centipedes

Schendylidae is a family of centipedes in the order Geophilomorpha found in the Americas, the Palearctic region, Africa, Madagascar, Australia, and southeast Asia, and also on some Pacific islands.

<i>Strigamia</i> Genus of centipedes

Strigamia is a genus of soil centipedes in the family Linotaeniidae found in temperate parts of the Holarctic region. Members of this family can be identified by their anteriorly tapering bodies, the extra claw on the forcipules, scattered coxal pores, and the distinctly swollen ultimate legs of the males. The generic name is from Latin striga, "strip," referring to its strip of bristles.

<i>Tygarrup</i> Genus of Mecistocephalidae centipedes

Tygarrup is a genus of centipedes in the family Mecistocephalidae, found mainly in southeast Asia and from the Seychelles to Hawaii. Although species in this genus can have either 43 or 45 leg-bearing segments, most of these species have 45 leg pairs. An undescribed Tygarrup species found in the Andaman Islands has 43 leg pairs. Centipedes in this genus are sometimes melanised in patches, and sternal glands are present the males of most species. These centipedes range from 2 cm to 6 cm in length. Tygarrup javanicus is one of the smallest of the mecistocephalid species and has become an invasive in greenhouses in Europe.

<i>Ballophilus</i> Genus of centipedes

Ballophilus is the largest genus of centipedes in the clade Ballophilidae. Species in this genus are found in tropical and subtropical regions, mainly in Africa and southeast Asia.

Zelanophilidae is a family of centipedes belonging to the order Geophilomorpha and superfamily Geophiloidea. Centipedes in this family are found in the Australasian region.

Geophilus bobolianus is a species of soil centipede in the family Geophilidae found in France and Italy. This species has 45 to 51 pairs of legs. It was originally classified as a subspecies of G. longicornis identified by its lack of anterior sternal pores.

Steneurytion is a genus of centipedes in the family Geophilidae. This genus was first described by Austrian myriapodologist Carl Attems in 1909. These centipedes are found in Australia, New Zealand, and Hawaii.

Queenslandophilus is a genus of centipedes in the family Geophilidae. It was described by German myriapodologist Karl Wilhelm Verhoeff in 1925. Centipedes in this genus feature second maxillae with sclerotized ridges on the coxosternite, no sternal pores, and coxopleura many scattered pores; the lateral parts of the labrum almost touch medially, and the ultimate legs most often have claws. These centipedes range from 1 cm to 6 cm in length, have 37 to 75 pairs of legs, and are found in Australia, Japan, and North America. The Japanese species Queenslandophilus monoporus and Q. macropalpus are notable for their small sizes, measuring only 10 mm and 15 mm in length, respectively. The species Q. elongatus, found in California, is notable for its large size, ranging from 40 mm to 63 mm in length. The species Q. macropalpus has only 37 leg pairs, the minimum number recorded in this genus, whereas Q. elongatus has 73 to 75 leg pairs, the maximum number recorded in this genus.

<i>Ribautia</i> Genus of centipedes

Ribautia is a genus of centipedes in the family Geophilidae. This genus was described by French myriapodologist Henry Wilfred Brolemann in 1909. Centipedes in this genus are found in South America, tropical Africa, Madagascar, the Arabian peninsula, Australia, New Zealand, and Melanesia.

Tuoba is a genus of 17 species of centipedes, in the family Geophilidae. This genus was described by American biologist Ralph Vary Chamberlin in 1920. These centipedes are found in coastal regions and islands in the Mediterranean and in the Atlantic, Pacific, and Indian oceans.

Mecistocephalus is a genus of centipedes in the family Mecistocephalidae. It was described by British entomologist George Newport in 1843.

Schendyla is a genus of centipedes in the family Schendylidae found in the west Palearctic region. This genus was described by Danish entomologists Vilhelm Bergsøe and Frederik Vilhelm August Meinert in 1866. Centipedes in this genus feature only a few spines on the claws of the second maxillae, two pores on each coxopleuron, and ultimate legs without claws.

Maoriella is a genus of centipedes in the family Geophilidae. It was described by Austrian myriapodologist Carl Attems in 1903. Species in this genus are found in New Zealand, Australia, and Tahiti.

Pectiniunguis is a genus of centipedes in the family Schendylidae. It was described by American naturalist Charles Harvey Bollman in 1889. Centipedes in this genus feature second maxillae with claws fringed by two rows of filaments, transversally elliptical sternal pore-fields on almost all trunk segments, two pores on each coxopleuron, and ultimate legs without claws. These centipedes range from 16 mm to 67 mm in length, have 35 to 73 pairs of legs, and are found in the tropical and subtropical regions of the Americas, Fiji, and west Africa. The African species Pectiniunguis minutus is notable not only for being the smallest in this genus but also for having as few as 35 leg pairs, the minimum number in this genus. The Brazilian species P. ducalis is notable not only for being the largest in this genus but also for having as many as 73 leg pairs, the maximum number in this genus.

Marsikomerus is a genus of centipedes in the family Schendylidae. It was described by Austrian myriapodologist Carl Attems in 1938. Species in this genus are found in Mexico and in the United States.

Eucratonyx is a genus of centipedes in the family Gonibregmatidae. This genus was described in 1898 by British zoologist Reginald Innes Pocock. Centipedes in this genus are found from the Andaman Islands to New Britain.

References

  1. 1 2 3 4 5 Bonato, Lucio; Edgecombe, Gregory D.; Zapparoli, Marzio (2011). "Chilopoda – Taxonomic overview". In Minelli, Alessandro (ed.). The Myriapoda. Volume 1. Leiden: Brill. pp. 363–443. ISBN   978-90-04-18826-6. OCLC   812207443.{{cite book}}: CS1 maint: date and year (link)
  2. Attems, Carl (1929). Attems, Karl (ed.). Lfg. 52 Myriapoda, 1: Geophilomorpha (in German). De Gruyter. p. 249. doi:10.1515/9783111430638. ISBN   978-3-11-143063-8.
  3. Sseliwanoff, A. (1884). "Materialii k isyceniyn russkih tyisiachenogich (Myriapoda)". Horae Societatis Entomologicae Rossicae (in Russian). 18: 69–121 [89-90] via Biodiversity Heritage Library.
  4. 1 2 Bonato, Lucio; Minelli, Alessandro (2014-03-03). "Chilopoda Geophilomorpha of Europe: a revised list of species, with taxonomic and nomenclatorial notes" . Zootaxa. 3770 (1): 1–136 [49-50, 52]. doi:10.11646/zootaxa.3770.1.1. ISSN   1175-5334.
  5. Demange, J.M. (1959). "Myriapodes Chilopodes de Madère (Mission de M. le Pr. A. Vandel)". Revue Française d'Entomologie (in French). 26: 157-166 [162-164].
  6. Matic, Z.; Negrea, St.; Fundora Martínez, C. (1977). "Recherches sur les Chilopodes hypogés de Cuba. II". Résultats des Expéditions Biospéléologiques Cubano-Roumaines à Cuba (in French). Vol. 2. Editura Academiei Republicii Socialiste România. București. pp. 277-301 [288].
  7. Verhoeff, Karl W. (1943). "Über Chilopoden der Türkei. III. Aufsatz". Zoologischer Anzeiger (in German). 143: 116-140 [133-134].
  8. "Pachymerium". Global Myriapod Information System. Zoologische Staatssammlung München. June 26, 2008. Archived from the original on October 11, 2013. Retrieved October 5, 2013.