J. VAN TOL National Museum of Natural History, Leiden ZOOLOGICAL EXPEDITIONS TO THE KRAKATAU ISLANDS, 1984 AND 1985: ODONATA Descriptions and records of Malesian Odonata, 2 Tol, J. van, 1990. Zoological expeditions to the Krakatau Islands, 1984 and 1985: Odonata. Descriptions and records of Malesian Odonata, 2. -Tijdschrift voor Entomologie 133: 273-279, figs. 1-11, tab. 1 Lissn 0040-7496]. Published 14 December 1990. A list of the Odonata collected by the members of the Krakatau Expeditions (1984 and 1985 ), organized by the La Trobe University (Melbourne) and LIPI (Jakarta). Most of the species mentioned are not from the Krakatau Islands, but from westernmost Java (Jawa) or southernmost Sumatra (Sumatera). Agriocnemis pygmaea (Rambur) and Ortbetrum t. testaceum (Burmeister) are recorded from the Krakatau Islands for the first time. J. van Tol, National Museum of Natural History, Postbus 9517, 2300 RA Leiden, The Netherlands. Key words. -Odonata; Malesia; Krakatau; Java; Sumatra. Members of most entomological expeditions to the Krakataus have made collections of dragonflies (Odonata). Yukawa & Yamane (1985) recently summarized the present knowledge. Their list of references should be completed with the work of Ris (1912), since that publication provides the iden-tifications of the specimens collected by Jacobson in May 1908, and only referred to as 'spec. 1' and 'spec. 2' by Jacobson (1909). Thornton & New (1988b) gave some preliminary results of the present mate-rial and some sight observations. The present collection of Odonata includes con-siderably more species, mainly due to sampling ac-tivities in the southernmost part of Sumatra and the westernmost part of Java. A detailed account of the general results of these expeditions were given by Thornton and Rosengren (1988), while Thornton & New ( 1988a) deal with the freshwater commun-ities. Presently, the only known relatively perman-ent water bodies on the Krakatau Islands are con-crete-lined ponds, one on Sertung and two on northern Panjang. Before 1940 there were several pools and a brackish-water lake with breeding pop-ulations of eurytopic Odonata, e.g. Pseudagrion mi-crocephalum (Rambur), Ischnura senegalensis (Rambur), Diplacodes trivialis (Rambur) and Pati-tala flavescens (Fabricius) (Dammerman 1948). The following systematic account lists all species collected during the expeditions of 1984 and 1985. Species collected on the Krakatau islands Rakata, Sertung, Anak Krakatau or Panjang are marked with an asterisk. All records are given in full, but data on longitude-latitude are summarized in the next paragraph. Localities Sumatra. -Liwa (1), sweeping, 5°04'S 104°03'E; Liwa (2), secondary forest, sweeping, 700 m, 5°04'S 104°03'E; Liwa (4), 5°04'S 104°03'E. Krakatau Islands. -Rakata, Owl Bay, 6°09'S 105°28'E; Panjang, 6°05'S 105°28'E; Anak Kraka-tau, sweeping, 6°06'S 105°26'E; Sertung, forest, 6°05'S 105°23'E; Sertung, Spit, 6°04'S 105°24'-25E. Java. -Ujung Kulon, Pulau Peucang, 6°45'S 105° 15'E; Ujung Kulon, Cideon, 6°46'S 105° 15'E; Ujung Kulon, Cibunar, 6°48'S 105° 17'E; Hills be-hind Carità. The present and former names of the islands are: Rakata, also known as Rakata Besar and Krakatau; Panjang, also known as Rakata Kecil and Lang eiland; Sertung, also known as Verlaten eiland. Compilation of information on topography and the history of events are to be found in Dammerman (1948), and the more recently published works of Simkin & Fiske ( 1983) and Thornton & Rosengren (1988). Systematic list The systematic list follows Davies & Tobin (1984, 1985). Records for each species are arranged in chronological order. Short comments on distri-bution and abundance of the species are given, us-273
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