Obrimus (phasmid)

Last updated

Obrimus
Obrimus bicolanus pair.jpg
Obrimus bicolanus ,
left female, right male
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Phasmatodea
Superfamily: Bacilloidea
Family: Heteropterygidae
Subfamily: Obriminae
Tribe: Obrimini
Genus: Obrimus
Stål, 1875
Species

Obrimus is a stick insect genus native to the Philippines. It is type genus for the tribe and the subfamily in which it is listed.

Contents

Characteristics

The species of this genus correspond in the habitus to the other representatives of the Obrimini, appear somewhat longer-legged compared to these and also have longer antennae than these. Like almost all other Obrimini, they are wingless in either sex. They are similar in size and appearance to the species of the genera Brasidas . As with these, the females have a relatively long and straight ovipositor that surrounds the actual ovipositor. Most Obrimus species have more and more pointed spines, which, however, are often thinner than those of most other Obrimini species. Compared to the representatives of Brasidas and Euobrimus there are only poorly or partially barely recognizable, flat slits or pits and none holes at the outer edge of the metasternum.

The shape of the eggs also differs significantly from that of other genera. The eggs are 4 to 5 millimetres (0.16 to 0.20 in) long and 3 to 4 millimetres (0.12 to 0.16 in) wide. The micropylar plate has three arms and is located on the dorsal area, which is bulging. The egg shape is reminiscent of that of Sungaya eggs. However, behind the tip at the lower pole there is another blunt pole, so that the eggs below, more or less clearly recognizable, have two blunt ends. The lid (operculum) sits diagonally on the egg and falls off sharply to the ventral side. [1]

Taxonomy

The genus Obrimus was established in 1875 by Carl Stål. The generic name is borrowed from Greek mythology. As the only species, and thus type species, Stål named Obrimus bufo , which until then was listed in the genus Acanthoderus . Other species were later transferred to the genus or described in it. In the meantime most of them have been transferred to the younger genera Aretaon , Trachyaretaon , Brasidas and Euobrimus. Remaining in the genus are: [2]

Distribution

Of the representatives known so far, only the occurrence of the two species described by Rehn and Rehn is known in more detail. Both appear on Luzon. While Obrimus bicolanus comes from the southeast of the island, more precisely from the Bicol region, Obrimus uichancoi was collected in the north in the province Apayao. Only the Philippines are given as location of the two other species. [1] [2]

Terraristic

A single representative of the genus is currently in the terrariums of lovers. The stock goes back to specimens that Thierry Heitzmann collected in 2010 on Luzon and bred for the first time. The species was brought to Europe in 2011 by Bruno Kneubühler, also distributed as Obrimus sp. 'Pulog'. The Phasmid Study Group lists the species under the name Obrimus bicolanus (?) and PSG number 324. [3] [4]

Related Research Articles

Heteropterygidae 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 are descriebed.

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

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.

Datamini 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.

Heteropterygini Tribe of stick insects

Heteropterygini is the only tribe within the subfamily of the Heteropteryginae from the order of the Phasmatodea in the family Heteropterygidae. With 19 representatives described, this subfamily represents both the species-poorest and that of the three subfamilies, to which the largest and most striking species are counted.

<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>Hoploclonia</i> Tribe of stick insects

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

Obrimini Tribe of stick insects

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

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

Mearnsiana is a monotypic genus of stick insects, containing Mearnsiana bullosa as the so far only described representative.

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

The genus Tisamenus native to the Philippines combines small to medium-sized species of stick insects.

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

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

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

Trachyaretaon is a genus of stick insects native to the Philippines.

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

Eubulides is a stick insect genus native to the Philippines.

<i>Aretaon asperrimus</i> Species of stick insect

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.

<i>Dares ulula</i> Species of stick insect

Dares ulula is a species of stick insects. Like most other members of the genus Dares, the species is native to Borneo, more precisely in the northwest of the island. The males are extremely prickly even for the representatives of the genus Orestes. Females are colored with a relatively high contrast.

<i>Tisamenus serratorius</i> Species of stick insect

Tisamenus serratorius is a stick insect species that occurs on the Philippine island Luzon.

<i>Tisamenus deplanatus</i> Species of stick insect

Tisamenus deplanatus is a stick insect species native to the Philippine islands Luzon and Mindanao occurs.

<i>Brasidas samarensis</i> Species of stick insect

Brasidas samarensis is stick insect species from the family Heteropterygidae. Occasionally it is named Samar stick insect according to their origin. In addition is the type species of the genus Brasidas, which was named after the Spartan officer Brasidas.

<i>Brasidas foveolatus</i> Species of stick insect

Brasidas foveolatus is a species of stick insects from the family Heteropterygidae. Next to Brasidas samarensis it is one of the most famous representatives of the genus Brasidas.

<i>Hoploclonia gecko</i> Species of stick insect

Hoploclonia gecko is a relatively small, spiny and darkly colored stick insect species that is native to the northwest of Borneo.

References

  1. 1 2 Rehn, J. A. G. & Rehn, J. W. H. (1939). Proceedings of The Academy of Natural Sciences (Vol. 90, 1938) , Philadelphia, pp. 435 ff.
  2. 1 2 Brock, P. D.; Büscher, T. H. & Baker, E. W. Phasmida Species File Online. Version 5.0/5.0 (accessdate 26 June 2021)
  3. Information about Obrimus sp. 'Pocdol' at phasmatodea.com by Kneubühler, B.
  4. Phasmid Study Group Culture List