In many tropical countries, there are numerous millipede species still awaiting discovery and description. Millipedes from China are especially little-known. Six particularly unusual species of so-called 'Dragon Millipedes', four of which found exclusively in caves, were recently discovered in southern China by an international team of researchers. The team included Miss Liu Weixin from the South China Agricultural University of Guangzhou, China [LINK1], currently conducting research for her PhD focusing on Chinese cave millipedes at the Centre of Taxonomy at the Research Museum Koenig (ZFMK), Leibniz Institute for Animal Biodiversity in Bonn, Germany [LINK2], her advisor Prof. Tian Mingyi [LINK3] and a renowned millipede expert, Dr. Sergei Golovatch, from the Russian Academy of Sciences, Moscow.
Dragon Millipedes, a genus of millipedes living in SE Asia, characterized by being armoured with unusual spine-like projections as well as toxic hydrogen cyanide, have become particularly famous since the 2007 discovery and description of the "Shocking Pink Dragon Millipede" in Thailand [LINK4]. This discovery highlighted a large number of unknown millipede species [LINK4] in the Mekong region [LINK5] and worldwide [LINK6]. While the newly described cave Dragon Millipedes from China lack the 'shocking' warning colour of their surface-living relatives, they are no less spectacular.
One of the species was named the 'Stick Insect Dragon Millipede' because it features extremely long legs and antennae, and resembles a stick insect, but with many more legs (Fig. 2). Two of the other species from caves fully lost their colour, which is a common characteristic of cave-living animals. Because of this, they appear ghostly white (Fig. 3). All the newly described species come from the two southern Chinese regions of Guangdong and Guangxi Zhuang, which host a large number of spectacular caves (Fig. 1). These caves are only now being explored in some detail.
In the course of her PhD, Miss Liu Weixin has already explored more than 200 Chinese caves (Fig. 1) and discovered and described over 20 new millipede species. The Dragon Millipedes are among her most spectacular discoveries as they exhibit extreme cave adaptations including the loss of pigmentation and extremely elongated legs and antennae. During her guest research year at the Research Museum Koenig in Bonn, Germany, Liu is currently busy describing more than two dozen further millipede species, which she collected from Chinese caves – literally bringing to light an unknown world.
Figure 1: Bangjiao Dong cave located near Yingde City, where the Ghost Dragon Millipede, Desmoxytes similis (Fig. 3) was discovered.
Figure 2: The extremely long legs of the Stick Insect Dragon Millipede, Desmoxytes phasmoides give the animal an unusual appearance, similar to a stick insect. This species, discovered in the Fengliu Dong Cave near Baise City, shows extreme versions of typical evolutionary adaptations of cave millipedes, namely the strongly elongated legs and antennae.
Figure 3: The Ghost Dragon Millipede, Desmoxytes similis, shows another common adaptation to underground life in caves; the complete loss of pigmentation gives the animal a ghost-like appearance.
Copyright: Sunbin Huang & Xinhui Wang (South China Agricultural University).
Quelle: Six new species of dragon millipedes, genus Desmoxytes Chamberlin, 1923, mostly from caves in China (Diplopoda, Polydesmida, Paradoxosomatidae).
Weixin Liu, Sergei Golovatch, Mingyi Tian
ZooKeys 577: 1-24 (05 Apr 2016)
Ansprechpartner: Sergei Golovatch [English], 7(499)936-7671, sgolovatch [at] yandex.ru;
Thomas Wesener [German], 0049 (0)228 9122-425, t.wesener [at] zfmk.de
Zoological Research Museum Alexander Koenig – Leibniz-Institute for Animal Biodiversity (ZFMK) is an independent research institute. The focus of research is on performing an inventory of the zoological species diversity on earth, on the analysis of changes in biodiversity as a result of environmental factors, and on evolutionary processes at the morphological and molecular levels. ZFMK furthermore explores the context of structure and function of ecological systems, advanced scientific methods, and the study of the history of science. The permanent exhibition “Our blue planet – the living network” offers a genuine nature experience based on naturalistic ecosystem displays.
The Leibniz Association is a network of 88 scientifically, legally, and economically independent research institutes and scientific service facilities. Leibniz Institutes perform strategic and thematically-oriented research and offer scientific service of national significance while striving to find scientific solutions for major social challenges.