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1 April 2007 Odonata of Yap, Western Caroline Islands, Micronesia
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Abstract

Fifteen species of Odonata are recorded from Yap, Micronesia—two Zygoptera and 13 Anisoptera. None is endemic to Yap. Hemicordulia lulico occurs elsewhere only in Palau, whereas most of the other species are widespread in the western Pacific and Indo-Australian regions. Macrodiplax cora and Tramea loewi, both recorded by Lieftinck in 1962, were the only species not encountered during this study; Tramea loewi remains known in Micronesia only from a single male collected in Yap by R. J. Goss in 1950. Six of the breeding species in Yap that are widespread in Indo-Australia occur no farther east in the Caroline Islands except possibly as unusual extralimital records in the cases of Agriocnemis femina and Neurothemis terminata; the four other species reaching only as far east as Yap are Anaciaeschna jaspidea, Agrionoptera insignis, Orthetrum serapia, and Rhyothemis phyllis. Orthetrum serapia is reported from Micronesia for the first time, although a very old single specimen record of O. sabina from Tobi Island may possibly pertain to O. serapia. The odonate fauna of the outer islands of Yap State is poorly known; only six species have been recorded from among four of the 15 island groups. In addition, Tramea transmarina euryale rather than T. t. propinqua was found to be the subspecies occurring in the Chuuk Islands, contrary to earlier publications.

Donald W. Buden and Dennis R. Paulson "Odonata of Yap, Western Caroline Islands, Micronesia," Pacific Science 61(2), (1 April 2007). https://doi.org/10.2984/1534-6188(2007)61[267:OOYWCI]2.0.CO;2
Accepted: 1 June 2006; Published: 1 April 2007
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