Obrimus (genus)

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Obrimus
Obrimus bicolanus, female on the left, male on the right

Obrimus bicolanus ,
female on the left, male on the right

Systematics
Order : Ghost horror (Phasmatodea)
Partial order : Areolatae
Family : Heteropterygidae
Subfamily : Obriminae
Tribe : Obrimini
Genre : Obrimus
Scientific name
Obrimus
Stål , 1875

The genus Obrimus is a genus of ghosts native to the Philippines . It is eponymous for the tribe and the subfamily in which it is led.

features

The species of this genus correspond in habit to the other representatives of the Obrimini , appear somewhat longer-legged compared to these and also have longer antennae than these. Like all 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 laying spine that surrounds the actual ovipositor . Obrimus species usually have more and more pointed spines, but these 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 and no holes or pits on the outer edge of the metasternum .

The shape of the eggs also differs significantly from that of other genera. The eggs are four to five millimeters long and three to four millimeters wide. The micropylar plate has three arms and is located on the dorsal area, which is strongly bulged. 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 at an angle on the egg and falls off sharply on the ventral side (see also the construction of the phasmid egg ).

Systematics

The genus Obrimus was established by Carl Stål in 1875 . 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:

distribution

Of the representatives known so far, only the occurrence of the two species described by Rehn and Rehn is more precisely known. Both occur 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 Apayao province . Only the Philippines are given as the location of the two other species.

Terrariums

A single representative of the genus is currently (end of 2013) in the terrariums of lovers. The breeding line goes back to animals that Thierry Heitzmann collected in 2010 on Luzon and bred for the first time. By Bruno Kneubühler the species was brought to Europe in 2011, also followed suit and as Obrimus sp. " Pulog " passed on. The Phasmid Study Group carries the species under the name Obrimus bicolanus (?) And PSG number 324.

credentials

  1. a b J.AG Rehn & JWH Rehn: Proceedings of The Academy of Natural Sciences (Vol. 90, 1938) , Philadelphia 1939, p. 435 ff. ( File version )
  2. ^ A b Paul D. Brock : Phasmida Species File Online . Version 5.0 / 5.0 (accessed November 23, 2013)
  3. Information on Obrimus sp. “Pocdol” on phasmatodea.com by Bruno Kneubühler
  4. Phasmid Study Group Culture List ( Memento from December 5, 2012 in the web archive archive.today ) (English)

Web links

Commons : Obrimus  - collection of images, videos and audio files