Pylaemenes (insect)

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Pylaemenes
Pylaemenes sepilokensis 'Tawau'.jpg
Pair of Pylaemenes sepilokensis from Tawau
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Phasmatodea
Superfamily: Bacilloidea
Family: Heteropterygidae
Subfamily: Dataminae
Genus: Pylaemenes
Stål, 1875
Synonyms
  • Datames Stål, 1875
  • Pyloemenes Bradley & Galil, 1977
Pair of Pylaemenes mitratus from Kota Bharu Pylaemenes mitratus.JPG
Pair of Pylaemenes mitratus from Kota Bharu
Pair of Pylaemenes coronatus, image from Redtenbacher 1906 Pylaemenes coronatus - Redtenbacher 1906.jpg
Pair of Pylaemenes coronatus , image from Redtenbacher 1906
Male of Pylaemenes oileus, Dimage from Redtenbacher 1906, there named as Datames oileus bezeichnet Pylaemenes oileus - Redtenbacher 1906.jpg
Male of Pylaemenes oileus , Dimage from Redtenbacher 1906, there named as Datames oileus bezeichnet
Male of Pylaemenes sepilokensis 'Sepilok' Pylaemenes sepilokensis sepilokensis, male.jpg
Male of Pylaemenes sepilokensis 'Sepilok'

Pylaemenes [1] is a genus of stick insects in the family Heteropterygidae and subfamily Dataminae. It combines small to medium-sized, often brightly colored Phasmatodea species. Their representatives are found in large parts of Southeast Asia.

Contents

Characteristics

The average size of representatives of this genus in the male sex is between 3.5 to 5.0 centimetres (1.4 to 2.0 in) and between 4.0 to 6.0 centimetres (1.6 to 2.4 in) in the females. All species are always wingless. The basic color of adult animals is usually a light beige or brown, which can be supplemented by almost white, brown or black markings depending on the species and gender. On the forehead, which becomes narrower towards the top, there are clear elevations that are differently designed depending on the type. The antennae are considerably longer than the femura of forelegs. One to three teeth can be found on the outer edge of the first antenna segment. The body surface is mostly covered with tubercles. In contrast to the genus Orestes , the Meso- and Metanotum are flattened or slightly roof-shaped, with a clearly raised central keel and two lateral longitudinal keels. The pronotum is significantly shorter than half the mesonotum. Large elevations arranged in pairs can often be found on the front edge of the mesonotum, which in males can also be formed as spines. The abdomen of the males is slender and, unlike in Orestes, the ninth tergite is strongly widened towards the rear. The abdomen of adult females is severely swollen, especially in the front half. In contrast to Orestes, the last segment (anal segment) is strongly triangularly tapered towards the rear and notched at the end. Depending on the species, especially in males, pairs of spines can be present in certain places on the thorax and abdomen. As with all Dataminae, the females of the genus Pylaemenes have no ovipositor to lay their eggs. [2] [3] [4] [5] [6]

Distribution area

The distribution area of the genus Pylaemenes includes large parts of Southeast Asia. Their representatives can be found in many areas of the Malay Archipelago and here especially on Borneo. There are also species on the Malay Peninsula, in Thailand and in China. [2]

Way of life

The nocturnal animals only come out of their hiding places in the leafy layer of the ground or on or behind the bark when it is dark. They are very lazy during the day. When they are discovered they play dead by stretching their hind legs back, the frore and middle legs forward and close to the body. The eggs can be more arched on the dorsal side and often have short hairs. The micropylar plate has three arms, with one arm pointing towards the lid, while the other two run more or less circularly around the egg. The eggs are usually laid on the ground, clamped in the bark near the ground or attached to plants such as mosses. [3]

Pylaemenes sp. 'Kubah'

Pylaemenes sepilokensis 'Sepilok'

Pylaemenes sepilokensis 'Tawau'

Pylaemenes pui

Pylaemenes coronatus

Orestes

Relationships of the genetic analysis examined Pylaemenes species and the position of Orestes within it by Sarah Bank et al. (2021) [7]

Taxonomy

In 1875 Carl Stål established the genus Pylaemenes for some species that were previously listed in the genus Acanthoderus . Of the species originally rearranged by him, only Pylaemenes coronatus remained in the genus. All others have turned out to be synonyms to other species or have turned out to be representatives of other genera. As namesake, Stål chose the Paphlagonian king Pylaemenes, a figure from Greek mythology. Since he had not specified a type species, William Forsell Kirby chose Pylaemenes coronatus in 1904, the oldest species listed in the genus at that time, which is still the type species.

In the same publication in which he described the genus Pylaemenes, Stål established 1875 the genus Datames for Acanthoderus mouhotii (today Orestes mouhotii ) and Acanthoderus oileus, which he named after the Old Persian military leader Datames. James Abram Garfield Rehn specified Datames oileus in 1904 as type species of Datames. In the following years almost all newly described species were assigned to this genus. Frank H. Hennemann discovered in 1998 that the type species Datames oileus belongs to the genus Pylaemenes. He synonymed Datames and transferred all species that had previously belonged to Datames into the genus Pylaemenes. [3] [8]

In the revision of the genus Orestes and the description of six new species in this previously monotypic genus by Joachim Bresseel and Jérôme Constant in 2018, three species belonging to Pylaemenes were also transferred to the genus Orestes. In addition, the differentiation between the genera Orestes and Pylaemenes has been specified. [6] Following this, some of the species described in Pylaemenes in the recent past belong into the genus Orestes, such as Pylaemenes elenamikhailorum , Pylaemenes konchurangensis and Pylaemenes konkakinhensis . [9] A Species described by Thanasinchayakul in 2006 as Pylaemenes kasetsartii was not recognized by the ICZN Commission and has been listed as nomen nudum since 2019. [2]

In their genetic analysis study published in 2021 shows Sarah Bank et al. that the Pylaemenes species examined there cannot be assigned to a uniform clade. The three examined species occurring on Borneo form a common clade. Pylaemenes pui described from China in 2013, the sample of which came from Thailand, does not belong in this clade and according to Bresseel, must be assigned to a genus of its own. Pylaemenes coronatus can also be found in another clade, the sister group of which is the genus Orestes. [7]

Valid species are: [2] [10]

(syn. = Acanthoderus occipitalis Kaup, 1871)
(syn. = Acanthoderus spiniventris Bates, 1865)
(syn. = Datames aequalis Rehn, J.A.G., 1904)
(syn. = Datames arietinusRedtenbacher, 1906)
(syn. = Datames cylindripesRedtenbacher, 1906)
(syn. = Pylaemenes infansRedtenbacher, 1906)

Terraristic

Several species of the genus are present in the terrariums of enthusiasts. Pylaemenes mitratus was imported from the Malay Peninsula in 1999 by Francis Seow-Choen. The species received PSG number 212 from the Phasmid Study Group. [3] [11] Another stock of this species was imported in 2015 from Kota Bharu. The most widespread are two stocks which are kept as Pylaemenes sepilokensis . This species was first collected by Mark Bushell in summer 2001 on Borneo, more precisely near Sepilok Orangutan Rehabilitation Centre and brought to Europe. It received the PSG number 245. After it was lost in the meantime, it has been in breeding again since around 2015 after further imports. In addition to the stock from Sepilok, there is another one from Tawau. [11] [12] According to the studies by Sarah Bank et al. these stocks belong to different species. [7]

Related Research Articles

<span class="mw-page-title-main">Heteropterygidae</span> Family of stick insects

The Heteropterygidae is a family of stick insects belonging to the suborder Euphasmatodea. Species can be found in Australasia, East and Southeast Asia. More than 130 valid species have been described.

<i>Orestes</i> (insect) Genus of stick insects

The genus Orestes combines relatively small and elongated Phasmatodea species from Southeast and East Asia.

<span class="mw-page-title-main">Obriminae</span> Family of stick insects

The Obriminae are the most species-rich subfamily of the Phasmatodea family Heteropterygidae native to Southeast Asia. It is divided into two tribe.

<span class="mw-page-title-main">Datamini</span> Tribe of stick insects

Datamini is the only tribe within the subfamily of the Dataminae from the order of the Phasmatodea. The representatives of this subfamily are on average not as large as those of the other two subfamilies belonging to the family of Heteropterygidae.

<span class="mw-page-title-main">Heteropterygini</span> Tribe of stick insects

Heteropterygini is the only tribe within the subfamily of the Heteropteryginae. With 19 representatives described, this subfamily includes the fewest species of the three subfamilies, but includes the largest and most striking species of the family.

<i>Dares</i> (insect) Genus of stick insects

The genus Dares, which is mainly native to Borneo, combines relatively small and mostly dark-colored Phasmatodea species.

<i>Planispectrum</i> Genus of stick insects

The genus Planispectrum combines very small and compact species from Southeast Asia.

<i>Hoploclonia</i> Tribe of stick insects

Hoploclonia is the only genus of the tribe Hoplocloniini and brings together relatively small and darkly coloured Phasmatodea species.

<span class="mw-page-title-main">Obrimini</span> Tribe of stick insects

The Obrimini are the most species-rich tribe of the Phasmatodea family of the Heteropterygidae native to Southeast Asia.

<i>Haaniella</i> Genus of stick insects

Haaniella is a genus of the Phasmatodea family Heteropterygidae from Southeast Asia.

<i>Aretaon</i> (insect) Genus of stick insects

Aretaon is a genus of stick insects native to Borneo and the Philippine island Palawan.

<i>Brasidas</i> (insect) Genus of stick insects

Brasidas is a genus that is native to the Philippines and is named after the Spartan general Brasidas

<i>Orestes mouhotii</i> Species of stick insect

Orestes mouhotii is an insect species belonging to the order of Phasmatodea. Because of its synyonym Orestes verruculatus, it is the type species of the genus Orestes. Because of its compact body shape, the species is sometimes referred to as small cigar stick insect.

<i>Orestes guangxiensis</i> Species of stick insect

Orestes guangxiensis is a representative of the genus Orestes.

<i>Orestes japonicus</i> Species of stick insect

Orestes japonicus, a stick insect, is a representative of the genus Orestes.

<i>Orestes shirakii</i> Species of stick insect

Orestes shirakii is a species of stick insects native to Taiwan.

<i>Pylaemenes elenamikhailorum</i> Species of stick insect

Pylaemenes elenamikhailorum is a species of stick insects native in Sepilok on Borneo. In application of the more recent differentiation between the genera Pylaemenes and Orestes the species is sometimes also called Orestes elenamikhailorum.

Orestes ziegleri is a species of stick insect native to Thailand.

<i>Pylaemenes sepilokensis</i> Species of stick insect

Pylaemenes sepilokensis is a species of stick insects (Phasmatodea) that is found in Borneo, more precisely in the Malay state of Sabah.

<i>Pylaemenes mitratus</i> Species of stick insect

Pylaemenes mitratus is a species of stick insects (Phasmatodea) native to Malay Peninsula and Sumatra. The species is also known by the common name Money Plant Stick Insect, which refers to the most well-known food plants, Epipremnum aureum, which is also known as money plant.

References

  1. ↑ Roskov Y.; Kunze T.; Orrell T.; Abucay L.; Paglinawan L.; Culham A.; Bailly N.; Kirk P.; Bourgoin T.; Baillargeon G.; Decock W.; De Wever A. (2011). Didžiulis V. (ed.). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Retrieved 24 September 2012.
  2. 1 2 3 4 Brock, P. D.; Büscher, T. H. & Baker, E. W. Phasmida Species File Online. Version 5.0/5.0 (accessdate 25 April 2023)
  3. 1 2 3 4 Dräger, H. (June 2012). Gespenstschrecken der Familie Heteropterygidae Kirby, 1896 (Phasmatodea) – ein Überblick über bisher gehaltene Arten, Teil 2: Die Unterfamilie Dataminae Rehn & Rehn, 1839, ZAG Phoenix, Nr. 5 Jahrgang 3(1), pp. 22–45, ISSN   2190-3476
  4. ↑ Redtenbacher, J. (1906). Die Insektenfamilie der Phasmiden. Vol. 1. Phasmidae Areolatae . Verlag Wilhelm Engelmann, Leipzig, pp. 47–53
  5. ↑ Bragg, P. E. (2001). Phasmids of Borneo, Natural History Publikations (Borneo) Sdn. Bhd., Kota Kinabalu, Sabah, Malaysia, 2001, p. 184, ISBN   983-812-027-8
  6. 1 2 Bresseel, J. & Constant, J. (2018). The Oriental stick insect genus Orestes Redtenbacher, 1906: Taxonomical notes and six new species from Vietnam (Phasmida: Heteropterygidae: Dataminae). Belgian Journal of Entomology 58. pp. 1–62, Brussel, ISSN   1374-5514,
  7. 1 2 3 Bank, S.; Buckley, T. R.; Büscher, T. H.; Bresseel, J.; Constant, J.; de Haan, M.; Dittmar, D.; Dräger, H.; Kahar, R. S.; Kang, A.; Bruno Kneubühler; Langton-Myers, S. & Bradler, S. (2021). Reconstructing the nonadaptive radiation of an ancient lineage of ground-dwelling stick insects (Phasmatodea: Heteropterygidae) , Systematic Entomology, DOI: 10.1111/syen.12472
  8. ↑ Hennemann, F. H. (1998). Ein Beitrag zur Kenntnis der Phasmidenfauna von Sulawesi. Mitteilungen des Museums für Naturkunde, Berlin, Zoologische Reihe 74, pp. 95–128
  9. ↑ Ho Wai-Chun, G. (2018). Three new species of genus Pylaemenes Stål (Phasmatodea: Heteropterygidae :Dataminae) from Vietnam , Zoological Systematics, 43(3), pp. 276–282, DOI: 10.11865/zs.201826
  10. ↑ Gao, Hao-Ran & Xie, Chongxin: Pylaemenes gulinqingensis sp. nov., a new species of subfamily Dataminae (Phasmida, Heteropterygidae) from Yunnan Province, China, Journal of Orthoptera Research 2022, 31(2): 125–129, DOI:10.3897/jor.31.79783
  11. 1 2 Phasmid Study Group Culture List
  12. ↑ Pylaemenes at Phasmatodea.com by Conle, O. V.; Hennemann, F. H.; Kneubühler, B. & Valero, P.
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