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Sympetrum fonscolombii is for the first time reported for Tuva (Tyva Republic, Russia), as found in the UbsuNur Depression. New data are provided on Odonata of the Turan or TuranUyuk Depression of Tuva, including the first record of Somatochlora exuberata in Tuva beyond the Todzha Depression and Coenagrion armatum, C. ecornutum, Aeshna juncea, A. grandis, Somatochlora graeseri and Libellula quadrimaculata for the first time reported for the Turan Depression. New distributional data and comments on Ophiogomphus spinicornis Selys, 1878 are added. Somatochlora alpestris found at Lake Oyskoe is for the first time reported for the southern Krasnoyarskiy Kray.
Results are presented of a brief odonatological examination of the Abrau and Taman' Peninsulas at the northwesternmost Caucasian Black Sea coast in Krasnodarskiy Kray, Russia, on July 2026, 2017. Twenty three species have been observed at the former peninsula and five at the latter. The Odonata records at the Abrau Peninsula are summarised, to include 34 species.
New data on Odonata of the Preah Sihanouk Province of Cambodia obtained in March 2017 and November 2018 are presented. The presence of Onychargia atrocyana Selys, 1865 in Cambodia is confirmed. Twentyone species are added to the known fauna of the Kbal Chhay Waterfall environs, 19 species to that of Ream Peninsula and 4 to that of Koh Rong Island. The total number of species registered for Kampong Saom Peninsula amounts to 74. The presented data are rather of historical importance since most of the remaining forest has been quickly and irreversibly logged a few months ago. The validity of Gynacantha demeter Ris, 1911 as a species distinct from G. dohrnii Krüger, 1899 is doubted.
The Odonata fauna of flat marshy areas of the Gulf of Siam coast in Koh Kong Province of Cambodia, containing 55 species, is considered. The published data of 2010- 2013 and new data of 2014 and 2016 on the surroundings of Koh Kong town are compiled and the first data on the area of large swampy Melaleuca forests at Andoung Tuek village are presented as well as some occasional photographic records. Gynacantha bayadera, Lyriothemis mortoni and Pornothemis serrata were for the first time recorded for Cambodia. Mortonagrion falcatum was found unexpectedly abundant at Andoung Tuek.
Two new subspecies of Hemicordulia tenera Lieftinck, 1930 (Corduliidae) from Cambodia and Thailand
(2015)
Hemicordulia tenera donnellyi ssp. nov. (holotype ♂: Chieng Mai Prov., Kunklang: highway 1009, Restaurant; 16°32.0’ N 98°31.3’ E, 1000 m, 22 v 1996, FSCA) and H. t. vikhrevi ssp. nov. (holotype ♂: Cambodia, Koh Kong Province, ~13 km ENE of Koh Kong, ‘Hemicordulia brook’, 11°39’55’’ N, 103°05’34’’ E, 315 m, 04 xii 2010, RMNH) are described from North Thailand and South-West Cambodia, respectively. The nominotypical H. tenera tenera Lieftinck, 1930 is distributed in the Malay Peninsula, Borneo, Java and Sumatra. Although these three subspecies are genetically very close, they are distinguishable by the relative length and shape of the caudal appendages.
Two new Cordulegaster species are described and illustrated by drawings, photographs and SEM images. The first one, C. plagionyx sp. nov., was discovered in NW Azerbaijan in a low-mountain forest landscape; the second, C. nachitschevanica sp. nov., occurs in the subalpine zone of Nakhichevan AR, south of the main territory of Azerbaijan. Both new taxa look generally similar to C. insignis Schneider, 1845; however, each of them reveals unique features and distinctive combinations of characters that set them apart from other species of the genus. Both new species exhibits new types of sex dimorphism previously unknown in Cordulegaster. Some traits related to the structure of male appendages and important details of colouration prevent both C. plagionyx sp. nov. and C. nachitschevanica sp. nov., from being reliably classified under any of two widely accepted groups of species within the genus Cordulegaster: the boltonii-group and the bidentata-group.
We describe three new species of damselflies from streams draining into Lake Kutubu in Southern Highlands Province, Papua New Guinea. They are Drepanosticta johncanni sp. nov. (Platystictidae), Pseudagrion parafarinicolle sp. nov. (Coenagrionidae) and Wahnesia kutubuensis sp. nov. (Argiolestidae). Diagnostic characters of the males and, where available of the females, are illustrated and the probable affinities of the new species are discussed.
The existing literature on the Odonata inhabiting the three large divisions of the Pacific Ocean (Micronesia, Melanesia, Polynesia) is revised taking into consideration earlier discussions on the species origin, historical faunistic records, various palaeogeographical models proposed for the area, general data on the biology and ecology of this insect order. Special emphasis is paid on the incomplete data set for the region and inconsistency of the exploration of this vast area. The taxonomy and fauna of the Pacific Odonata is far from complete which makes it very difficult to provide any plausible hypothesis on the biogeographical pattern that we observe today.
The widely accepted view of long distance dispersal from a centre of origin as the only possible means for species to occupy remote oceanic island archipelagos is critically reviewed. There are seven phenomena in the current Odonata distribution that cannot be explained only by random gene transfer mediated by wind dispersal.
Those are called “oddities”, however, they are believed to be regularities of past geological events and modern day human associated activities within the Pacific.
The rationale for each of them is explained in details and illustrated with distribution maps following the current taxonomy of the group.
A new approach is suggested to tackle the question of the origin of the Pacific Odonata by relating the higher taxa distribution to the geological events and palaeontology of the families. It is not intended to be a new hypothesis yet before more systematic studies of the taxonomy and fauna of the group. Therefore, it is believed that the new method suggested here will increase the attention of the scientific community and will boost studies on this insect order within the Pacific Ocean. Discussion on its applicability is provided with attention to details that are difficult to be explained with the Pacific Odonata palaeontology as we know it for the moment.
This paper offers an explanation of each of the 44 scientific names given by Leopold Krüger (1861-1942) to odonate taxa together with that for the names of all the genera into which they are sorted now. But prior to that there is some information about the life and work of this scientist, and in the final part his preferences in odonatological nomenclature are compared with those in the names created by F.M. Brauer and F. Ris and some impressions of his studies on Neuroptera are presented and considerations about his aspirations in his work are given.
Part 1, Quoc Toan Phan and Van Quang To, page 1-6:
The genus Megalestes Selys, 1862 in Vietnam, with first description of female of Megalestes australis Karube, 2014 (Odonata: Zygoptera: Synlestidae)
Abstract: The male secondary genitalia and the caudal appendages of males and females of the three confirmed Vietnamese Megalestes species (M. australis, M. haui and M. micans) are figured. The female sex of M. australis is described for the first time.
Part 2, Quoc Toan Phan and Van Quang To, page 7-19:
Odonata checklist from Son Tra Nature Reserve, Da Nang city, central Vietnam
Abstract: A checklist of 44 odonate species (21 Zygoptera and 23 Anisoptera) from Son Tra Nature Reserve, central Vietnam is provided. Idionyx thailandica Hämäläinen, 1985 is recorded for the Vietnamese fauna for the first time, a new Coeliccia sp. is awaiting description in the near future, and the taxonomic status of specimens of the genus Leptogomphus remains unsettled and will have to be solved in the future.