Complex display behaviour during the intraspecific interactions of myrmecomorphic jumping spiders (Araneae,Salticidae)

Jumping spiders (Salticidae) are known for their elaborate vision‐based display behaviour, and a sizeable minority of the species in this large family resemble ants. The display repertoire of two ant‐like salticid species from the Philippines is investigated. Myrmarachne assimilis is a specialist ant mimic, closely matching the appearance of the weaver ant Oecophylla smaragdina. Myrmarachne bakeri is a generalist mimic, which, although ant‐like, is not a close match to any sympatric ant species. Myrmarachne are sexually dimorphic, with males having enlarged chelicerae. The copulatory posture of Myrmarachne is unique among salticids, apparently as an adjustment for the male's elongated chelicerae. Details concerning the intraspecific behaviour of Myrmarachne appear to be adjustments to living in environments populated by numerous other animals with similar appearance (ants). However, the specialist and the generalist that were investigated have display repertoires that are broadly similar to each other and to those of more typical salticids. Generally, the display behaviour of Myrmarachne appears not to have necessitated dramatic deviation from typical salticid display and mating strategies.     

发现一新种——浙裂盾蝎

仔细研究了采自浙江杭州的标本，发现此为蛛形纲裂盾目裂盾蝎属一新种──浙裂盾蝎。     

Noxious arthropods as potential prey of the venomous Javan slow loris (Nycticebus javanicus) in a West Javan volcanic agricultural system

Arthropods play a significant role in ecosystems as prey for animals such as insectivorous primates. The venomous Javan slow loris (Nycticebus javanicus) is a nocturnal primate endemic to the island of Java, Indonesia. It remains unknown if its venom is partially sequestered from noxious arthropod prey. We studied the little-known arthropod community in a rural agriculture system in West Java, Indonesia, in order to investigate the potential prey and source for sequestration of venom. We found specimens of the partially noxious insect orders Lepidoptera, Hemiptera, Coleoptera, Hymenoptera, Orthoptera and of the class Arachnida in slow loris foraging trees in an agricultural area in West Java, Indonesia. To examine the effects of environmental conditions on the abundance of this food source, arthropods were trapped every two weeks for five months, using sweep net transects, Malaise and pitfall traps. Trap type had a significant effect on taxa caught. Wind strength negatively affected the number of Lepidoptera captured in the Malaise trap and humidity had a confounding effect on Orthoptera caught by sweep net. Despite the short-term nature of our study, by using a combination of trapping methods, we identified a relatively high diversity of insects in a human-dominated landscape. Our results can be used as a basis to understand the proximate and ultimate factors shaping the use of venom by the slow loris as a primate.     

Status of the family-group names of Arachnida first published in Band I,Abtheilung 1 of Berendt's Die im Bernstein befindlichen organischen Reste der Vorwelt (1845)

The status of the arachnid names published in Berendt's 1845 Berendt GC. 1845. Die organischen Bernstein-Einschlusse im Allgemein. In: Berendt GC, editor. Die im Bernstein befindlichen organischen Reste der Vorwelt gesammelt in Verbindung mit Mehreren bearbeitet un herausgegeben, Vol. 1, part I. Berlin: Nicholaischen Buchhandlung. p. 41–60. http://books.google.com/books?id=mBkGKe4WegAC (http://books.google.com/books?id=mBkGKe4WegAC) (Accessed: 30 January 2012).  [Google Scholar] work Die im Bernstein befindlichen organischen Reste der Vorwelt (Band I, Abtheilung 1) is reassessed. All of the new generic and specific names introduced there are nomina nuda. However, the family names Eresidae (Araneae), Eriodontidae (Araneae), Mithraeidae (Araneae) and Sarcoptidae (Acari: Actinotrichida) were all validly proposed and should be attributed to C.L. Koch in Berendt (1845 Berendt GC. 1845. Die organischen Bernstein-Einschlusse im Allgemein. In: Berendt GC, editor. Die im Bernstein befindlichen organischen Reste der Vorwelt gesammelt in Verbindung mit Mehreren bearbeitet un herausgegeben, Vol. 1, part I. Berlin: Nicholaischen Buchhandlung. p. 41–60. http://books.google.com/books?id=mBkGKe4WegAC (http://books.google.com/books?id=mBkGKe4WegAC) (Accessed: 30 January 2012).  [Google Scholar]). Two of these family names are currently in use: Eresidae C.L. Koch in Berendt (1845 Berendt GC. 1845. Die organischen Bernstein-Einschlusse im Allgemein. In: Berendt GC, editor. Die im Bernstein befindlichen organischen Reste der Vorwelt gesammelt in Verbindung mit Mehreren bearbeitet un herausgegeben, Vol. 1, part I. Berlin: Nicholaischen Buchhandlung. p. 41–60. http://books.google.com/books?id=mBkGKe4WegAC (http://books.google.com/books?id=mBkGKe4WegAC) (Accessed: 30 January 2012).  [Google Scholar]) (previously attributed to C.L. Koch, 1851 Koch CL. 1851 [1850]. Übersicht des Arachnidensystems. 5:1–104. Nürnburg: Verlag J.L. Lotzbeck. http://www.biodiversitylibrary.org/item/87778 (http://www.biodiversitylibrary.org/item/87778) (Accessed: 30 January 2012).  [Google Scholar]) and Sarcoptidae C.L. Koch in Berendt (1845 Berendt GC. 1845. Die organischen Bernstein-Einschlusse im Allgemein. In: Berendt GC, editor. Die im Bernstein befindlichen organischen Reste der Vorwelt gesammelt in Verbindung mit Mehreren bearbeitet un herausgegeben, Vol. 1, part I. Berlin: Nicholaischen Buchhandlung. p. 41–60. http://books.google.com/books?id=mBkGKe4WegAC (http://books.google.com/books?id=mBkGKe4WegAC) (Accessed: 30 January 2012).  [Google Scholar]) (previously attributed to Murray, 1877 Murray, A. 1877. “Economic entomology”. In Aptera. South Kensington Museum Science Handbooks, Vol. I, xxiii + 433London: Chapman & Hall.  [Google Scholar]), along with the coordinate superfamily names Eresoidea C.L. Koch in Berendt (1845 Berendt GC. 1845. Die organischen Bernstein-Einschlusse im Allgemein. In: Berendt GC, editor. Die im Bernstein befindlichen organischen Reste der Vorwelt gesammelt in Verbindung mit Mehreren bearbeitet un herausgegeben, Vol. 1, part I. Berlin: Nicholaischen Buchhandlung. p. 41–60. http://books.google.com/books?id=mBkGKe4WegAC (http://books.google.com/books?id=mBkGKe4WegAC) (Accessed: 30 January 2012).  [Google Scholar]) and Sarcoptoidea C.L. Koch in Berendt (1845 Bonnet, P. 1956. Bibliographica araneorum. Tome II (2^me partie: C–F), 919–1925. Toulouse: Douladoure. p.  [Google Scholar]).     

Description of four new species of Hersiliidae (Arachnida,Araneae) from Kinabalu National Park,Sabah, Borneo,Malaysia

The family Hersiliidae includes, to date, seven genera and 148 species, distributed throughout tropical, subtropical and warm temperate zones. Of these, five genera and 30 species have been recorded from the Oriental region. In this paper, three new species of the genus Hersilia Audouin and one new species of the genus Tamopsis Baehr and Baehr are described from Kinabalu National Park, Sabah, Borneo, Malaysia.     

28S核糖体RNA基因D3区序列在两种甲螨中的测定及其系统学意义

利用引物D3A和D3B扩增出姬三皱甲螨Rhysotritia ardua和棒菌甲螨Schelooribates妇砸的28S rDNA D3区序列，结合GenBank检索得到蛛形纲的8个相关序列，采用MP法构建分子进化树．发现蜘蛛目分化较早，前气门亚目、甲螨亚目首先聚合，再与中气门亚目聚为一类；但蝎目比蛛蛛目进化晚．说明28S rDNA D3区对于蛛形纲分子系统分类有一定的意义．     

我国土壤蜘蛛（蛛形纲：蜘蛛目）四新种

本文报道了土壤蜘蛛4新种,分隶于3科3属,依次为:老殿栅蛛Hahuna laodiana sp. nov. 凹刺足蛛Phrurolithus foveatus sp. nov. 衡山刺足蛛Phrurolithus hengshan sp. nov. 和天目合跳蛛Synagelides tianmn sp.nov。     

海南岛云斑蛛属1新种(蜘蛛目:园蛛科)

记述了中国海南岛云斑蛛属1新种,双斑云斑蛛Cyrtophora bimaculata n.sp.模式标本保存于河北大学博物馆.文中测量单位:mm.