Escaryus dentatus

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Escaryus dentatus
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Myriapoda
Class: Chilopoda
Order: Geophilomorpha
Family: Schendylidae
Genus: Escaryus
Species:
E. dentatus
Binomial name
Escaryus dentatus
Titova, 1973

Escaryus dentatus is a species of soil centipede in the family Schendylidae. [1] This centipede is found in the Maritime territory (Primorsky Krai) of the Russian Far East. [1] [2] This species was first described in 1973 by the Russian myriapodologist Lidia P. Titova. [3]

Contents

Discovery

Titova based the original description of this species on 22 specimens (twelve females, six males, and four juveniles). [3] These specimens were found in the Ussuriysky Nature Reserve and the Kedrovaya Pad Nature Reserve, which are both in the Maritime territory (Primorsky Krai) of Russia. [3] [2] A female holotype and eleven paratypes (six males and five females) are deposited in the Zoological Museum of the Moscow State University. [2]

Description

This species features 37 or 39 pairs of legs in both sexes. These centipedes are small, ranging from 15 mm to 20 mm in length. Both the body and the head are light yellow. The second and third articles of the forcipules feature small denticles, but both of the other articles feature large denticles. The name of the species refers to the notably large denticles on the first and fourth articles of the forcipules. [3]

The posterior margin of the labrum features a relatively shallow concave arch in the middle and denticles that are short and obtuse. One pair of lappets extend from the lateral margins of the first maxillae. Relatively sparse setae appear on the sternites. The sternite of the ultimate leg-bearing segment has the shape of a trapezoid that is slightly longer than wide. The basal element of the ultimate legs features pores on both the ventral and lateral surfaces. Anal pores are present on the telson. [2] [4]

This species shares many traits with other species in the genus Escaryus . For example, like other species in this genus, this species features denticles in the middle of the labrum and lappets on the first maxillae. Furthermore, the ultimate legs in this species, like those of other species in this genus, end in claws, and in the male, these legs are thick and densely covered with setae. [3] [2] [5]

This species shares an especially extensive set of distinctive traits with the species E. molodovae , which also is found in the Russian Far East. This species, like E. dentatus, features short and obtuse denticles and a shallow arch on the labrum, one pair of lappets on the first maxillae, denticles on each article of the forcipules, and anal pores. Furthermore, the sternite of the ultimate leg-bearing segment in both species has a trapezoidal shape. [2]

Several features, however, distinguish E. dentatus from E. molodovae. For example, where E. dentatus features small denticles on the second and third articles of the forcipules and large denticles on both of the other articles, E. molodovae instead features small denticles on the first three articles and a large denticle on only the ultimate article. Furthermore, the sternite of the ultimate leg-bearing segment is slightly longer than wide in E. dentatus, whereas this sternite is about as long as wide in E molodovae. [2] Moreover, E. molodovae is smaller, ranging from 10 mm to 14 mm in length, and has fewer legs, with only 35 leg pairs in each sex, than E. dentatus does. [3]

Related Research Articles

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Tasmanophilus spenceri is a species of centipede in the family Zelanophilidae. This centipede is found only in New Zealand and has only 39 pairs of legs, the minimum number recorded in the family Zelanophilidae. This species reaches only 23 mm in length and is the smallest centipede in this family.

Dinogeophilus is a genus of soil centipedes in the family Schendylidae. This genus contains only two species, Dinogeophilus pauropus and D. oligopodus, which range from 4.5 to 5.5 mm in length. These species are notable as the smallest not only in the order Geophilomorpha but also in any epimorphic order of centipedes. The species D. oligopodus is also notable as one of only six species of soil centipedes to feature only 29 pairs of legs and one of only two species to include females with only 29 pairs, the minimum number recorded for females in the order Geophilomorpha.

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Arctogeophilus is a genus of soil centipedes in the family Geophildae. These centipedes are found in subarctic and temperate regions of Asia, North America, and western Europe. The taxon Arctogeophilus was first proposed in 1909 by the Austrian myriapodologist Carl Attems as a subgenus within the genus Geophilus. The French zoologist Henri Ribaut elevated Arctogeophilus to the rank of genus in 1910.

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Escaryus is a genus of soil centipedes in the family Schendylidae. These centipedes are notable as schendylids adapted to colder temperatures and restricted to cool climates and high latitudes. With more than 30 species, this genus is easily the largest group of such centipedes in the family Schendylidae. Most schendylids are limited to tropical or subtropical regions.

Escaryus molodovae is a species of soil centipede in the family Schendylidae. This centipede is found on Sakhalin island in the Russian Far East. This species is notable for its small size, reaching only 14 mm in length.

Escaryus polygonatus is a species of soil centipede in the family Schendylidae. This centipede is found in the Maritime territory of the Russian Far East. This species was first described in 1973 by the Russian myriapodologist Lidia P. Titova.

Escaryus vitimicus is a species of soil centipede in the family Schendylidae. This centipede is found in the Republic of Buryatia in the Russian Far East. This species features 37 pairs of legs in each sex and can reach 27 mm in length.

Alloschizotaenia bipora is a species of soil centipede in the family Geophilidae. This centipede is found in Rwanda and the Democratic Republic of the Congo. This species was first described in 1952 by the Austrian myriapodologist Carl Attems.

Arctogeophilus inopinatus is a species of soil centipede in the family Geophildae. This centipede is found in western and central France and may also be present in Luxembourg. This species is small, measuring only 18 mm in length, and can have either 39 or 41 pairs of legs.

Schendyla dentata is a species of soil centipede in the family Schendylidae. This centipede is widespread in western Europe. This species is notable not only for its small size, reaching only 12 mm in length, but also for the absence of males in all samples collected. This absence of males suggests that this species reproduces through parthenogenesis.

Escaryus hirsutus is a species of soil centipede in the family Schendylidae. This centipede is found on Sakhalin island in the Russian Far East. This species was first described in 1973 by the Russian myriapodologist Lidia P. Titova.

Escaryus kirgizicus is a species of soil centipede in the family Schendylidae. As the species name suggests, this centipede is found in Kyrgyzstan. This species is known only from high mountains and is notable for being found at one of the highest altitudes recorded for any centipede in the order Geophilomorpha in Central Asia.

Mesoschendyla cribrifera is a species of soil centipede in the family Schendylidae. This centipede is found in South Africa. This species features 55 pairs of legs in each sex and measures 34 mm in length.

References

  1. 1 2 Bonato, L.; Chagas Junior, A.; Edgecombe, G.D.; Lewis, J.G.E.; Minelli, A.; Pereira, L.A.; Shelley, R.M.; Stoev, P.; Zapparoli, M. (2016). "Escaryus dentatus Titova, 1973". ChiloBase 2.0 - A World Catalogue of Centipedes (Chilopoda). Retrieved 2024-06-08.
  2. 1 2 3 4 5 6 7 Dyachkov, Yurii V.; Bonato, Lucio (2024-04-23). "An updated synthesis of the Geophilomorpha (Chilopoda) of Asian Russia". ZooKeys (1198): 17–54 [18, 36-39]. Bibcode:2024ZooK.1198...17D. doi: 10.3897/zookeys.1198.119781 . ISSN   1313-2970. PMC   11061560 . PMID   38693975.
  3. 1 2 3 4 5 6 Titova, L.P. (1973). "New species of the genus Escaryus Cook & Collins (Schendylidae, Chilopoda)". In Ghilarov, M.S. (ed.). Ekologiya Pochvennykh Bespozvonochnykh (in Russian). Moscow: Nauka Publisher. pp. 94-119 [95, 99–100, 118].
  4. ↑ Bonato, Lucio; Edgecombe, Gregory; Lewis, John; Minelli, Alessandro; Pereira, Luis; Shelley, Rowland; Zapparoli, Marzio (2010-11-18). "A common terminology for the external anatomy of centipedes (Chilopoda)". ZooKeys (69): 17–51. Bibcode:2010ZooK...69...17B. doi: 10.3897/zookeys.69.737 . ISSN   1313-2970. PMC   3088443 . PMID   21594038.
  5. ↑ Pereira, L.A.; Hoffman, R.L. (1993). "The american species of Escaryus, a genus of holoarctic centipeds (Geophilomorpha: Schendylidae)" (PDF). Jeffersoniana. 3: 1–72 [8].
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