A REVISION OF THE AUSTRALASIAN SPECIES OF THE GENUS TETRAGNATHA (ARANEAE, TETRAGNATHIDAE)

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The Australasian species of the genus Tetragnatha are revised based on the specimens from Australia, New Guinea and neighboring islands. Thirty-one species are recognized. New species, new synonymies and new records of distribution are as follows :T. amoena sp. nov. from New Guinea.T. biseriata Thorell, 1881.= T. anirensis Strand, 1914. New synonymy.= T. valoka Chrysanthus, 1975. New synonymy.New record from Australia.T. bituberculata L. Koch, 1867.= T. heatwolei Chrysanthus, 1975. New synonymy.T. ceylonica Cambridge, 1869.= T. eitupensis Strand, 1913. New synonymy.T. chauliodus (Thorell, 1890).New record from New Guinea.T, demissa L. Koch, 1871.= T. quadridens Dondale, 1966. New synonymy.T. eumorpha sp. nov. from New Guinea.T. gressittomcm sp. nov. from New Guinea.T. hirashimai sp. nov. from New Guinea.T. insularis sp. nov. from Lord Howe Is.T. insulicola sp. nov. from Lord Howe Is.T. jaculator Tullgren, 1910.= T. sp. B (Okuma 1968 & 1981).New record from New Guinea.T. monticola sp. nov. from New Guinea.T. nana sp. nov. from New Guinea.T. oreobia sp. nov. from New Guinea.T. priamus sp. nov. from Solomon Is.T. serra Doleschall, 1857.New record from New Guinea.T. signata sp. nov. from New Guinea.The genus Tetragnatha Latreille, 1804 has been known from 56 species in the Australasian region (Roewer, 1942 ; Brignoli 1983). However, no detailed study of the genus has been made in this vast geographical region. Recently I was able to study the Australasian tetragnathid spiders based on the collection of the several museums and institutions. As a result 31 species were recognized from Australia, New Guinea and neighboring islands. Of these, 3 species are already known as the cosmopolitan species (Okuma, 1983). The present paper gives the descriptions of 11 new species and the redescriptions of 17 known species. Illustrations of important characters as well as measurements of the relative lengths of legs of the 31 species are also presented.The number of materials examined, and the abbreviations of the museums and the institutions are as follows :BMH : Bernice P. Bishop Museum, Honolulu, 356 specimens.AMS : Australian Museum, Sydney, 181 specimens.NSMT : National Science Museum, Tokyo, 17 specimens.KUF : Entomological Laboratory, Faculty of Agriculture, Kyushu University, Fukuoka, 72 specimens.Terminology of the cheliceral armature of Tetragnatha was established by Wiehle (1939). Later, Locket & Millidge (1953) adopted his terminology and translated it in English in their book, British Spiders. In the present paper, the terms are used according to Locket & Millidge. In addition, some new terms are provided. These are summarized as follows (an asterisk shows a new term) :a : An apophysis, used for locking the female’s fang during copulation.“Gu : The guide tooth of upper row.*Gl : The guide tooth of lower row.*e : An extra tooth found between (Gu) and (T) in the female of some species.T : The first (largest) tooth of the row proper.*rsu : The upper row of small teeth.*rsl : The lower row of small teeth.*U2 : The next tooth of (Gu).*L2 : The next tooth of (Gl).*s : A spur or prominence, present in the female of some species.t : A tooth or prominence, found in the male of some species.sl : A tooth which usually slopes towards the base of the segment in the male of some species.*AXu : An auxiliary guide tooth of upper row, present in some species.*AX1 : An auxiliary guide tooth of lower row, present in some species.EX : An excrescence found on the outer edge of the fang, near its base, in some species.

著者

Okuma Chiyoko
Entomological Laboratory Fa Culty Of Agriculture Kyushu University

A REVISION OF THE AUSTRALASIAN SPECIES OF THE GENUS TETRAGNATHA (ARANEAE, TETRAGNATHIDAE)

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