Pylaemenes sepilokensis | |
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Pylaemenes sepilokensis sepilokensis ♂ | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Phasmatodea |
Superfamily: | Bacilloidea |
Family: | Heteropterygidae |
Subfamily: | Dataminae |
Genus: | Pylaemenes |
Species: | P. sepilokensis |
Binomial name | |
Pylaemenes sepilokensis (Bragg, 1998) | |
Subspecies [1] | |
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Synonyms [1] | |
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Pylaemenes sepilokensis is a species of stick insects (Phasmatodea) that is found in Borneo, more precisely in the Malay state of Sabah.
The females reach a length of 45 to 48 millimetres (1.8 to 1.9 in) in the nominate subspecies. The males are 39 to 45 millimetres (1.5 to 1.8 in) long. Both sexes have orange eyes and a brown non-shiny coloration, slightly darker in males. This coloring and the strongly structured body surface ensure a phytomimesis in which the animals resemble the bark of trees. [2] [3] [4]
The subspecies Pylaemenes sepilokensis kinabaluensis remains somewhat smaller. It is only 36.5 millimetres (1.44 in) long in males and 41 millimetres (1.6 in) in females. The animals differ from Pylaemenes sepilokensis sepilokensis by the mesonotum, which clearly tapers backwards. In the female it is 6.5 millimetres (0.26 in) wide in front and 5.5 millimetres (0.22 in) behind. In the male it tapers from 5.5 to 3.5 millimetres (0.22 to 0.14 in). Otherwise, the subspecies is morphologically similar to the nominate subspecies. [5]
Pylaemenes sepilokensis has been found at various locations in Sandakan District, mostly in the Sepilok Forest Reserve. [2] The subspecies Pylaemenes sepilokensis kinabaluensis was found in Kinabalu National Park on the edge of the road to Mount Kinabalu near the park headquarters. The species feeds on leaves of various Araceae, on Curculigo and Pandanus species. [5]
The nocturnal animals hide during the day and usually react when disturbed by apparent death. The females lay one, more rarely two, eggs per week. These are brown, 3.5 millimetres (0.14 in) long and 2.5 millimetres (0.098 in) wide. Its surface is covered with approx. 0.5 millimetres (0.020 in) long hairs with a double hook at the end. After about 14 to 18 weeks, the nymphs, which are initially very light and about 11 millimetres (0.43 in) long, begin to hatch at night. As they grow, they often show shades of green in the otherwise light beige base coloration. It takes five to six months for males and six to eight months for females to become adults. [4]
The species was described in 1998 by Philip E. Bragg as one of three subspecies of Datames borneensis. A female collected near Sandakan on June 29, 1927, was selected as the holotype. It was already in the F.M.S. Museum and was transferred to today's Naturalis Biodiversity Center in Leiden. Paratypes are two females and three males originating from the Sepilok Forest Reserve. The females were collected in September 1982 by C.L. Chan and are in his private collection together with one male paratype each collected in 1992 and 1994. The third male, also collected in 1994, is in the private collection of Francis Seow-Choen. Both the original species and the subspecies name refer to the locality. [2] [3]
Frank H. Hennemann synonymized the genus Datames with Pylaemenes in 1998 and includes only Pylaemenes coronatus , Pylaemenes oileus and Pylaemenes pusillus (now Planispectrum pusillum ). [6] Since the corresponding work appeared only a few days after the publication of Bragg's description, the three subspecies of Datames borneensis, among other things, have not yet been considered here. Pylaemenes borneensis sepilokensis and the other two subspecies were first mentioned in 2004 as representatives of this genus. [7]
Seow-Choen elevated all three subspecies to species status in 2016. At the same time, he described Pylaemenes sepilokensis kinabaluensis, as a subspecies for the nominate form of Pylaemenes sepilokensis. Both the male holotype and female paratype were collected by Seow-Choen and Olivia Seow Wen in Kinabalu National Park in September 2011. Both types are deposited in the Sabah Parks Natural History Museum, also referred to as the "Kinabalu Park Museum", located at the Kinabalu National Park Headquarters. [1] [3]
In a molecular genetic study published in 2021, two samples referred to as Pylaemenes sepilokensis from different localities in Sabah, namely Sepilok and Tawau, were determined to be non-conspecific. According to this, the strain collected in Tawau must be another undescribed species. [8]
Pylaemenes sepilokensis was first collected for terraristics by Mark Bushell in the summer of 2001 in Borneo, more precisely near Sepilok, and brought to Europe. The species received the PSG number 245 from the Phasmid Study Group. After it had disappeared in the meantime, it has been bred again since 2015 after further imports by Ian Abercrombie. [4] [9] In addition to a breeding stock from Sepilok, there is another from Tawau, which has also been referred to as Pylaemenes sepilokensis, but must be assigned to a separate species. [8] In contrast to most other Datamini, hazel, bramble or other Rosaceae are not suitable as fodder plants in the long term. On the other hand, the species, like its closer relatives, can be kept and bred well with Epipremnum , Philodendron or Dieffenbachia species. [9]
Pulchriphyllium giganteum, commonly known as the Giant Malaysian Leaf insect, is a species of leaf insects described from Malaysia by Hausleithner in 1984 and placed in the genus Pulchriphyllium since 2021. Pulchriphyllium giganteum is the largest species belonging to the genus Pulchriphyllium reaching 105 mm in size. They are found most abundantly in the west Malaysian tropics. The females typically have large elytra that lie edge to edge on the abdomen and tend to lack hind wings making them usually flightless. Males have small elytra and sometimes transparent non-leaflike functional hind wings. Pulchriphyllium giganteum found in the wild tend to be mostly females and the first male of this species was not found until 1994. In captivity, the species has primarily been observed to reproduce through parthenogenesis meaning the females are asexual. The primary reproductive pattern in the wild is unknown. Eggs tend to be brown or black and glossy and resemble seeds. They hatch around 6 months after breeding. Newly hatched young nymphs tend to be wingless and brown or reddish in color. They develop their green color after feeding on leaves. Both the adult and larval stages are phytophagous meaning they feed on plants. The main plant food sources for this species are oak and bramble tree leaves.
Pylaemenes 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.
The genus Orestes combines relatively small and elongated Phasmatodea species from Southeast and East Asia.
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.
Epidares nolimetangere, the touch-me-not stick insect, is an insect species from the order of the Phasmatodea and the only representative of the genus Epidares. The species name nolimetangere comes from Latin and means "don't touch me". It refers to the prickly appearance of the animals.
The genus Dares, which is mainly native to Borneo, combines relatively small and mostly dark-colored Phasmatodea species.
The genus Planispectrum combines very small and compact species from Southeast Asia.
Hoploclonia is the only genus of the tribe Hoplocloniini and brings together relatively small and darkly coloured Phasmatodea species.
Haaniella is a genus of the Phasmatodea family Heteropterygidae from Southeast Asia.
Aretaon asperrimus is a species of insect in the Aretaon genus of the Phasmatodea order. The sometimes used common name thorny stick insect is a bit misleading, since the species does not correspond to the typical stick-like habitus and many other species are thorny as well.
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.
Orestes guangxiensis is a representative of the genus Orestes.
Orestes japonicus, a stick insect, is a representative of the genus Orestes.
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.
Dares verrucosus is a species of stick insects. Like most other members of the genus Dares, the species is native to Borneo, more precisely in the north of the island.
Hoploclonia cuspidata is a stick insect species native to the north of Borneo and is also called Brunei Hoploclonia stick insect.
Hoploclonia abercrombiei is a stick insect species known from the northwest of Borneo, more precisely from only one place in the Malay state Sarawak.
Haaniella gintingi is a stick insect species from Sumatra. It is a typical representative of the subfamily Heteropteryginae. The occasionally used common name Ginting’s Haaniella refers to the species name.
Haaniella parva is a species of stick insect from the subfamily Heteropteryginae and belongs to the representatives of the genus Haaniella native to Sumatra. It is their smallest representative.
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.